Subaru2012–2024 Critical issues documented

Subaru BRZ ZD8: common faults & what to check

The ZD8 is the Subaru BRZ built 2021 onward. It was sold here with the 2.4 boxer petrol. Of the 26 faults documented for the BRZ, 7 apply to this generation, each with its symptoms, what to inspect and a typical repair cost. Free, no account needed.

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Documented faults

Critical

Most serious

$550–$1,800

Typical repair

Service milestones

You're looking at the ZD8 · 2.4 boxer petrol

Everything below is narrowed to this variant. Pick a different one to change it.

2021–nowZD8 Selected2021–nowZD82.4 boxer petrolPetrolDocumented issues7 knownSee faults & what to checkPhoto: Mr.choppers via Wikimedia Commons, CC BY-SA 3.0.

Choose a different generation

Now narrow it to the engine

A 1.8 and a 2.4 of the same car do not fail the same way, so the faults below narrow to the engine as well as the year. Free, no account needed.

Which engine is in it?

2.4 boxer petrol· 2.4 litre petrol

A 2022 Subaru BRZ is the ZD8 generation (2021 to now).

Start your free check on this Subaru BRZ

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Subaru BRZ ZD8

Can't confirm for this car

Subaru BRZ · 2022

Narrowed to the year. No engine is recorded for this vehicle. Pick an engine to see which faults apply.

Tell us the engine, or check the engine code on the car, before relying on this.

No engine is recorded for this vehicle.

matched on year only

What to look out for

We have not documented any faults for the exact Subaru BRZ you picked.

That is a gap in our research, not a clean bill of health — it does not mean this combination is trouble-free, and it is not a reason to skip the checks. Every one of the 26 faults documented across the Subaru BRZ is still listed further down this page.

Show every year and engine again

A 2022 Subaru BRZ: what is due, and when

Servicing

Next service

50,000 km

A full fluid flush including the gearbox and differential oils keeps the shift quality sharp.

This car may already have passed it.

Placed by the car’s age, not read from the dash — 27,600–64,400 km after 4 years.

Timing

Our research does not record which this engine uses, and it depends on the engine rather than the model. Check the owner’s manual rather than assume: on a belt-driven engine, an overdue belt is the failure that takes the engine with it.

Behind it

20,000 kmFirst thorough check of the suspension geometry and wheel alignment.

Ahead of it

100,000 kmInspect the spark plugs and look for any seepage around the cam carrier seals.

“Behind it” means the car has driven past that distance, not that the work was done — ask to see the receipts. These are the intervals for the Subaru BRZ Second Generation · 2.4L FA24 Boxer (174kW) - RWD · Petrol; only the car’s own service book says what has actually been done to it.

See all 7 issues for this oneDocumented for the exact year and engine you picked.

Depends on the exact engine — 7 moreDocumented for a specific engine we could not confirm from what you picked. Check the engine code on the car.

Engine, transmission & cooling7

01FA24D Direct Injection Intake Valve Carbon Buildup

Scan ECU for stored misfire fault codes on any cylinder.petrol2021 onwardEngineCan't confirm for this car$700–$1,800Read the full fault: symptoms, where to look, what to ask the seller

02FA24 timing chain rattle on early ZD8 production

Cold-start the engine in the morning and listen immediately for chain rattle from the front.petrol2022 onwardEngineCan't confirm for this car$700–$1,800

OccasionalEngine $700–$1,800 to fix

Can't confirm for this car

Early production ZD8 BRZ (2022 model year) fitted with the new FA24 2.4-litre naturally aspirated engine exhibited cold-start timing chain rattle from the chain tensioner. This appears in early-build cars before Subaru updated the tensioner specification during production. The rattle is similar in character to the FB-series chain rattle on the GP/GJ Impreza — a brief noise on cold start that fades as oil pressure builds. Subaru acknowledged the issue and updated tensioners are fitted to later production runs. Affected cars can be retrofitted.

Symptoms to notice

Chain rattle from engine front on cold start, typically within first 5–10 seconds
Noise more pronounced after long overnight park in cool temperatures
Rattle disappears once engine oil pressure stabilises

What to check

Cold-start the engine in the morning and listen immediately for chain rattle from the front.
Check the VIN build date — early 2022 model year ZD8 cars are most at risk.
Confirm with dealer records whether the updated tensioner has been retrofitted.

Where to look: FA24 timing chain and tensioner assembly at front of engine block

Parts involved: Timing chain.

Ask the seller

“Has the timing chain tensioner been updated under Subaru's technical correction?”
“Is there a cold-start rattle from the engine?”
“What is the build date of the car (not just the model year)?”

03FA24 Clutch Master Cylinder Internal Seal Failure

Inspect clutch reservoir fluid level and colour.petrol2021 onwardTransmissionCan't confirm for this car$380–$950

OccasionalTransmission $380–$950 to fix

Can't confirm for this car

The ZD8 BRZ manual transmission uses the same hydraulic clutch master cylinder specification as the ZN8 GR86 — both second-generation cars share the FA24-platform clutch actuation design. The internal piston cup seal degrades through heat cycling in the firewall-mounted location and through moisture ingress into hygroscopic clutch fluid. As the seal loses integrity, hydraulic pressure bypasses the piston during pedal application rather than actuating the concentric slave cylinder at the gearbox. Symptoms progress from a low engagement point to a pedal that slowly sinks during sustained hold, eventually to complete inability to disengage the clutch disc. The fault is diagnosed via a pressure-hold test performed with the pedal depressed firmly for 30 seconds. Replacement of the master cylinder alone restores function without requiring gearbox removal.

Symptoms to notice

Clutch bite point gradually moving lower over multiple drives
Non-linear or spongy pedal feel not resolved by hydraulic system bleeding
Pedal slowly sinking to the floor when held depressed at a standstill
Occasional complete loss of clutch pedal resistance during normal driving

What to check

Inspect clutch reservoir fluid level and colour.
With the engine running, hold the pedal fully depressed for 30 seconds — if the engagement point continues to creep lower under steady force the master cylinder seal is bypassing.
Check the underside of the master cylinder and firewall for weep marks or fluid residue.
Confirm fluid replacement history.

Where to look: Firewall-mounted clutch master cylinder — internal piston bore cup seal and hydraulic reservoir

Parts involved: Clutch.

Ask the seller

“Has the clutch pedal ever slowly sunk or felt spongy on a drive?”
“Has the master cylinder been replaced, including under any Subaru warranty claim?”
“When was the clutch fluid last changed?”
“Has the engagement point shifted toward the floor since the car was new?”

04Accessory Drive Belt Tensioner and Idler Pulley Failure

With the engine idling, listen from the front of the engine bay for a squealing, chirping, or rumbling noise that correlates with engine speed.petrol2012–2023EngineCan't confirm for this car$350–$900

OccasionalEngine $350–$900 to fix

Can't confirm for this car

The FA20D and FA24D accessory drive belt systems use a spring-loaded tensioner and one or more idler pulleys whose sealed bearings are prone to failure from contamination and age. Once a bearing starts to seize, the resulting belt misalignment causes rapid belt wear and can lead to belt loss, cutting all accessory functions including power steering (where fitted), the alternator, and the water pump drive. The failure typically begins with audible noise months before the bearing seizes completely.

Symptoms to notice

High-pitched squealing or chirping from the front of the engine that varies with RPM
Rumbling or growling that disappears when the belt is briefly deflected off a pulley
Belt glazing, cracking, or edge fraying visible on inspection
Battery warning light illuminating if the belt slips off and the alternator stops charging
Temperature gauge rising if the belt loss also stops the water pump on engines with belt-driven coolant pumps

What to check

With the engine idling, listen from the front of the engine bay for a squealing, chirping, or rumbling noise that correlates with engine speed. Visually inspect the belt for glazing, cracking, or fraying on the rib surfaces. Check pulley surfaces for rust staining indicating bearing breakdown. If a workshop inspection is possible: Using a mechanic's stethoscope or long screwdriver, isolate the noise to the tensioner or idler pulley body.

Where to look: Front of the engine — accessory drive belt, spring tensioner, and idler pulley on the FA20D/FA24D

Parts involved: Timing belt.

Ask the seller

“Has the accessory drive belt, tensioner, or idler pulley been replaced, and at what mileage?”
“Is there any squealing, chirping, or rumbling noise from the front of the engine, particularly on cold start?”
“Has the battery ever gone flat or warning lights appeared that resolved once the engine warmed up?”

05ZD8 FA24 early oil consumption reports

Check oil level and consumption history and ask about any engine-related recalls or service actions performed.petrol2021–2024EngineCan't confirm for this car$300–$4,000

OccasionalEngine $300–$4,000 to fix

Can't confirm for this car

The second-gen ZD8 BRZ's larger 2.4 FA24 boxer has drawn early oil-consumption reports from some owners, and early engines were subject to scrutiny, so oil use and level should be checked on used examples.

Symptoms to notice

Oil consumption between changes
Low oil warning
Need to top up between services
Faint smoke under load

What to check

Check oil level and consumption history and ask about any engine-related recalls or service actions performed.

Where to look: FA24 boxer engine

Ask the seller

“Does it use oil between changes?”
“Any recall or engine work done?”
“Has oil level been monitored?”

06FA24D Valve Stem Seal Oil Leak

Cold-start the engine from fully cold and observe the exhaust for the first 30–60 seconds.petrol2022–2023EngineCan't confirm for this car$900–$2,800

CommonEngine $900–$2,800 to fix

Can't confirm for this car

The FA24D 2.4-litre engine fitted to ZD8-generation BRZ (2022+) has accumulated owner and workshop reports of valve stem seals leaking oil into the combustion chamber, particularly after the engine has been sitting overnight. The seals harden with heat cycling and lose their ability to prevent oil tracking down the valve guides, producing a characteristic puff of blue smoke on cold start that typically clears within a minute. Left unrepaired, oil fouling accelerates spark plug degradation and can contaminate the catalytic converter.

Symptoms to notice

Short burst of blue smoke from the exhaust immediately on cold start that disappears within one minute
Oil fouling on spark plugs causing rough cold idle or a misfire code (P0301–P0304) that clears when warm
Slight oil burning smell on cold start with no external leak visible
Gradual but slow oil consumption in the absence of external leaks
Catalytic converter efficiency codes appearing on longer-term neglected examples

What to check

Cold-start the engine from fully cold and observe the exhaust for the first 30–60 seconds. A brief puff of bluish smoke that then clears is the classic valve-seal signature. Remove spark plugs and look for oil fouling, particularly on cylinder 1 and 4 which run hotter in the flat-four layout. Check for oil accumulation in the intake manifold around the valve guides.

Where to look: FA24D cylinder head — intake and exhaust valve stem seals on all eight valves

Parts involved: Catalytic converter.

Ask the seller

“Does the car produce any visible smoke on a fully cold start before the engine warms up?”
“Have the spark plugs been inspected recently, and was any oil fouling noted?”
“Has Subaru or any workshop mentioned valve stem seals during any inspection or service?”

076-Speed Manual Transmission 2nd Gear Synchro Wear

During the test drive, perform multiple deliberate 1-2 and 3-2 downshifts at moderate to high throttle.petrol2012–2023TransmissionCan't confirm for this car$1,800–$4,000Read the full fault: symptoms, where to look, what to ask the seller

Other Subaru BRZ engines and years19 documented issues that do not apply to the one you picked.

Engine, transmission & cooling13

01FA20 Piston Ring Land Cracking Under Sustained High-RPM Track Use

Check for blue oil smoke under hard acceleration or on overrun.petrol2012–2021EngineDoes not apply$9,000–$22,000

OccasionalEngine $9,000–$22,000 to fix

Does not apply

The FA20's forged and cast aluminium pistons have relatively narrow ring land walls. Under sustained high-RPM operation (track days, time attack), thermal cycling and combustion pressure fatigue can crack the top ring land. This allows combustion gases to bypass the rings, causing rapid oil consumption, blue smoke, and eventual hydraulic lock or connecting rod failure if oil level drops undetected.

Symptoms to notice

Excessive engine oil consumption of more than 0.5 litres per 1,000 km, often discovered between services
Blue smoke from the exhaust under hard acceleration or when lifting off the throttle at high RPM
Low compression reading (below 1,200 kPa) or high leak-down percentage on affected cylinders

What to check

Check for blue oil smoke under hard acceleration or on overrun.
Inspect oil level before purchase — a track-used car burning oil between checks is a red flag.
Pull spark plugs and inspect for oil fouling.
If a workshop inspection is possible: Perform a compression and leak-down test across all four cylinders.

Where to look: Pistons in both cylinder banks of the horizontally-opposed FA20 engine

Ask the seller

“Has the car been used on a track or in any motorsport events?”
“Can you supply the last five service records showing oil level checks?”
“Would you be willing to allow a compression and leak-down test before purchase?”

02FA20D Rod Bearing Wear from Oil Surge During Track Use

Ask directly whether the car has been used on circuit, hillclimb, or autocross events.petrol2012–2021EngineDoes not apply$1,500–$18,000

OccasionalEngine $1,500–$18,000 to fix

Does not apply

The stock FA20D oil pan has no internal baffle or surge protection, so sustained lateral G-forces during circuit driving push engine oil away from the pickup tube, causing momentary oil starvation at the rod bearings. This leads to accelerated bearing wear and in severe cases a spun or seized rod bearing resulting in catastrophic engine failure. The fault is well documented in the Australasian track community. Remediation requires an aftermarket oil pan baffle kit or accusump installation. Any BRZ with track, hillclimb, or autocross history that cannot demonstrate corrective work should be treated as high risk for this failure.

Symptoms to notice

Low or fluctuating oil pressure warning light during hard cornering on circuit
Transient oil pressure fault codes logged from track sessions
Knocking or rumbling noise from lower engine under load in advanced failure
Rod knock audible at idle or during acceleration in severe cases

What to check

Ask directly whether the car has been used on circuit, hillclimb, or autocross events.
Check for documented oil pressure warning history in ECU fault codes.
Inspect the underside of the oil pan for an aftermarket baffle kit or modified sump.
Pull the oil filler cap and dipstick and inspect for metallic debris in the oil.
Listen for lower-engine knock at idle and during hard acceleration.

Where to look: Engine lower end — connecting rod bearings and oil pan pickup area

Ask the seller

“Has the car ever been used on a race circuit, hillclimb, or autocross?”
“Has an oil pan baffle kit or accusump been fitted?”
“Has the car ever triggered a low oil pressure warning?”
“Has the engine been inspected or rebuilt following any track use?”

03FA20D Cylinder Bore Scoring and Engine Seizure

Listen for a deep knocking or ticking noise on cold start that changes with engine load.petrol2012–2020EngineDoes not apply$6,000–$15,000Read the full fault: symptoms, where to look, what to ask the seller

04FA20 oil consumption and low-oil risk

Check oil level and colour, ask for a consumption history, watch for smoke on a hard rev, and confirm regular oil checks.petrol2012–2021EngineDoes not apply$300–$4,000

CommonEngine $300–$4,000 to fix

Does not apply

The ZC6 BRZ's FA20 boxer is known for notable oil consumption, and running low is dangerous given the engine's known sensitivity, with some engines having suffered damage. Regular checking is essential and many owners report using oil between services.

Symptoms to notice

Oil consumption between changes
Low oil warning
Faint blue smoke on hard driving
Rising need to top up

What to check

Check oil level and colour, ask for a consumption history, watch for smoke on a hard rev, and confirm regular oil checks.

Where to look: FA20 boxer engine

Ask the seller

“How much oil does it use between changes?”
“Has it ever run low on oil?”
“Any engine work done?”

05Rear Differential Bearing Wear on High-Mileage and Track Examples

Drive at 80–110 km/h on a smooth road and listen for a drone or whine that changes pitch with speed but not engine RPM.petrol2012–2021TransmissionDoes not apply$1,200–$3,500

OccasionalTransmission $1,200–$3,500 to fix

Does not apply

The Torsen-style limited-slip rear differential on the BRZ uses angular contact bearings that are sensitive to shock loading and high-speed cornering loads. On high-mileage cars (over 120,000 km) or vehicles with significant track use, the carrier and pinion bearings develop wear that manifests as a droning or whining noise proportional to road speed, and in advanced cases, clunking under load changes.

Symptoms to notice

Persistent droning or whining noise from the rear of the car that rises and falls with vehicle speed rather than engine speed
Clunking or lurching sensation during on-off throttle transitions at low speed, indicating excessive bearing play
Vibration felt through the floor pan at highway speed that worsens progressively over time

What to check

Drive at 80–110 km/h on a smooth road and listen for a drone or whine that changes pitch with speed but not engine RPM.
Check for clunk on throttle lift-off at low speed.
Inspect differential housing for oil seepage.
Check diff fluid colour and level — milky or metallic-flecked fluid confirms bearing contamination.

Where to look: Rear differential housing, centre of rear axle carrier

Parts involved: Differential.

Ask the seller

“Does the car make any droning or whining noise at highway speeds?”
“Has the rear differential fluid ever been changed, and if so, at what mileage?”
“Has the vehicle been driven on track or used for drifting?”

06Rear LSD Clutch Pack Wear from Aggressive Use

Check differential fluid level, colour, and smell via drain plug.petrol2012–2021TransmissionDoes not apply$850–$2,800

OccasionalTransmission $850–$2,800 to fix

Does not apply

ZC6 BRZ STI-spec and tS models were equipped with a Torsen Type-1 helical LSD as standard; performance-oriented owners routinely retrofit clutch-type plate differentials. On the ZC6 platform, clutch-type LSDs are subject to accelerated wear from repeated high-power corner exits, particularly when operated without correct GL-5 plus friction-modifier differential fluid or with extended drain intervals. The clutch pack friction material experiences thermal degradation at the interference between pack surfaces under locking events. Pack wear progression causes the differential to slip progressively under partial-throttle power application before failing entirely to an open-diff characteristic. Additionally, rear differential mounting bushes deflect under sustained hard cornering, altering driveshaft output angle and causing premature output shaft seal leakage that further degrades LSD fluid condition.

Symptoms to notice

Rear differential clunking during low-speed parking-lot tight turns
Inside rear wheel spinning freely on corner exit under power despite LSD
Chattering or juddering sensation through seat during slow sharp directional changes
Differential oil appearing burnt or discoloured at service inspection

What to check

Check differential fluid level, colour, and smell via drain plug.
Test LSD engagement with a slow tight-radius turn and listen for the characteristic engagement clunk.
Inspect differential output shaft seals for oil weeping.
Request differential service records and confirm friction modifier was used in GL-5 fluid.

Where to look: Rear differential — LSD clutch pack friction material within differential case

Parts involved: Clutch.

Ask the seller

“Is this the factory Torsen unit or an aftermarket clutch-type plate LSD?”
“Has differential oil been changed with friction modifier at correct intervals?”
“Has the clutch pack or differential housing been rebuilt or replaced?”
“Has the car been used in motorsport, drift, or hard autocross use?”

07FA20D Water Pump Failure and Coolant Loss

petrol2012–2020CoolingDoes not apply$700–$1,600

OccasionalCooling $700–$1,600 to fix

Does not apply

The FA20D's water pump is driven by the timing chain and uses a plastic impeller that is susceptible to cavitation erosion and premature bearing failure. Failures typically occur between 80,000–150,000 km and can present with either a sudden bearing seizure accompanied by a belt-driven squeal, or a slow internal coolant leak that enters the engine oil without external signs. The latter mode — mixing coolant into the sump — causes rapid oil film breakdown and can lead to bearing damage if not caught quickly.

Symptoms to notice

Coolant level dropping without any visible external leak under the car
Milky or coffee-coloured engine oil on the dipstick indicating coolant ingress
Temperature gauge rising above normal operating range, particularly in traffic
Squealing or grinding noise from the front of the engine that varies with engine speed
White froth under the oil filler cap after the engine has been used

What to check

Check the coolant level in the reservoir and compare to the engine oil colour on the dipstick — a milky or frothy appearance on the dipstick indicates coolant contamination.
With the engine running, listen for a squealing or rumbling from the water pump area (front of the engine).
Inspect the coolant for oil sheen and the oil filler cap underside for white emulsion.

Where to look: FA20D front engine cover — water pump assembly driven off the timing chain

Parts involved: Water pump.

Ask the seller

“Has the water pump ever been replaced or inspected, and at what mileage?”
“Has the coolant ever required topping up between scheduled services?”
“Has the oil ever appeared milky or the temperature gauge risen above the normal band?”

08Clutch Master Cylinder Internal Seal Failure

Press and hold the clutch pedal to the floor for 30 seconds and check whether the pedal slowly creeps toward the floor (indicating internal bypass).petrol2012–2021TransmissionDoes not apply$380–$850

OccasionalTransmission $380–$850 to fix

Does not apply

On manual-transmission BRZ examples, the clutch master cylinder uses rubber cup seals that degrade over time due to hydraulic fluid moisture absorption and heat cycling. Seal failure allows internal bypass, resulting in a clutch pedal that slowly sinks to the floor under sustained pressure or requires pumping to restore normal engagement height. Fluid loss may be entirely internal with no visible external leak.

Symptoms to notice

Clutch pedal gradually sinks toward the floor when held in the depressed position, recovering after being released and re-pressed
Loss of clutch engagement height over time, with the biting point migrating lower as internal seals deteriorate
Difficulty selecting gears despite no visible external clutch fluid leak from the master cylinder body

What to check

Press and hold the clutch pedal to the floor for 30 seconds and check whether the pedal slowly creeps toward the floor (indicating internal bypass).
Inspect the reservoir fluid level and colour — dark brown fluid indicates long-overdue replacement.
Inspect the master cylinder body and push-rod boot for seepage or staining.

Where to look: Clutch master cylinder mounted to the firewall on the driver's side, connected to the clutch pedal arm

Parts involved: Clutch.

Ask the seller

“Does the clutch pedal feel firm and consistent, or does it slowly sink when held to the floor?”
“When was the clutch fluid last changed?”
“Has the clutch ever been rebuilt or the master cylinder replaced?”

09FA20 timing chain guide and tensioner wear

Listen for chain rattle at cold start, check oil condition and intervals, and scan for cam/crank correlation codes.petrol2012–2021EngineDoes not apply$600–$2,500

OccasionalEngine $600–$2,500 to fix

Does not apply

The FA20 can develop timing chain rattle from worn guides and tensioner on higher-km examples, especially those tracked or run on long oil intervals. A rattle at start-up warrants inspection before timing is affected.

Symptoms to notice

Rattle on cold start-up
Chain noise at idle
CEL for cam timing
Metallic ticking

What to check

Listen for chain rattle at cold start, check oil condition and intervals, and scan for cam/crank correlation codes.

Where to look: Timing chain, guides and tensioner

Parts involved: Timing chain.

Ask the seller

“Any rattle on cold start?”
“Has it been tracked?”
“What oil interval has it had?”

10Manual Clutch Judder and Disc Glazing

Repeat on a slight uphill to load the drivetrain more.petrol2012–2020TransmissionDoes not apply$900–$2,200

CommonTransmission $900–$2,200 to fix

Does not apply

The factory single-mass flywheel and clutch assembly on the 6MT BRZ is prone to engagement judder — a vibration or shudder felt through the drivetrain as the clutch bites from rest. Subaru issued a technical service bulletin for excessive clutch chatter on early ZC6 models, attributing it to clutch disc and pressure plate characteristics at low-speed engagement. Owners who drive in stop-start traffic frequently report the problem worsens over time as the disc glazes, and the issue can return even after OEM clutch replacement if driving style is unchanged.

Symptoms to notice

Shudder or vibration through the car body and seat when releasing the clutch from a standstill
Judder that is worse on a slight uphill or when the clutch is partially engaged for manoeuvring
Chattering sensation transmitted through the gearshift lever during clutch engagement
Gradual worsening of judder as the disc surface glazes with age
Symptom temporarily improves after a period of disuse or cooler ambient temperatures

What to check

Repeat on a slight uphill to load the drivetrain more. Inspect the underside of the car for oil contamination on the bellhousing, which can cause similar symptoms if the rear main seal leaks onto the clutch disc. If a workshop inspection is possible: Engage the clutch slowly from rest on flat ground and note any shudder through the seat or gear lever.

Where to look: Clutch assembly — pressure plate, friction disc, and single-mass flywheel

Parts involved: Clutch.

Ask the seller

“Has the clutch ever been replaced, and if so was it done under warranty or at the owner's expense?”
“Does the car judder or shudder when pulling away from rest, especially on a hill?”
“Has any dealer diagnosed clutch chatter and what was their recommended action?”

11FA20 Hydraulic Valve Lifter Drain-Back Noise on Cold Start

Start cold engine and listen for ticking from the cam cover area.petrol2012–2021EngineDoes not apply$150–$1,800

CommonEngine $150–$1,800 to fix

Does not apply

The FA20's hydraulic lash adjusters (HLAs) allow engine oil to drain back into the sump after extended shut-down periods. On cold start, the lifters operate without full oil film for 20–60 seconds, producing a loud metallic ticking or rattling from the valve train. Repeated drain-back episodes can accelerate lifter and camshaft lobe wear over time.

Symptoms to notice

Loud ticking or rattling from the top of the engine on cold start that dissipates within 30–60 seconds of idle
Noise is most pronounced after the vehicle has sat overnight or for several hours, particularly in cold ambient temperatures
Slight valve train roughness at idle that smooths out once oil pressure stabilises

What to check

Start cold engine and listen for ticking from the cam cover area.
Verify it clears within 60 seconds; persistent noise indicates worn lash adjusters or blocked oil galleries.
Check oil level and condition; low or degraded oil worsens drain-back.

Where to look: Cylinder head valve train, accessible from top of engine

Ask the seller

“Has the engine been started cold recently and did you notice any ticking on startup?”
“What oil viscosity and brand has been used, and how regularly has it been changed?”
“Has the car been used on track where high oil temps may have degraded the oil faster?”

12Throttle Body Carbon Fouling Causing Erratic Idle

Check idle quality cold and hot.petrol2012–2021EngineDoes not apply$180–$550

CommonEngine $180–$550 to fix

Does not apply

The FA20 uses port fuel injection supplemented by direct injection (D-4S system). Unlike pure port-injected engines, the intake valves and throttle body bore do not receive a fuel washing effect, leading to carbon build-up on the throttle butterfly and bore over time. Heavy deposits cause the throttle to stick marginally off its fully-closed position, producing an unstable or elevated idle, hesitation from a standstill, and occasional check-engine codes for idle control deviation.

Symptoms to notice

Unstable or hunting idle speed, fluctuating between 600 and 1,000 RPM particularly when the engine is fully warm
Hesitation or stumble when pulling away from a standstill, especially in cold weather
Check engine light with idle control fault codes P0506 or P0507 stored in the ECU

What to check

Check idle quality cold and hot.
Scan for stored or pending codes P0505, P0506, P0507 (idle control system).
Verify throttle plate closes fully and returns crisply.
If a workshop inspection is possible: Remove the intake duct and inspect the throttle butterfly and bore for carbon deposits — a clean bore should be near-bare metal; heavy fouling shows as a black ring restricting airflow.

Where to look: Throttle body on the intake manifold, accessible from the top of the engine bay

Ask the seller

“Does the car idle smoothly when fully warmed up, or does the idle speed hunt?”
“Has the throttle body ever been cleaned or inspected?”
“Are there any check engine lights present, and has the car been scanned for fault codes?”

13Clutch Pedal Pivot Bush Wear Causing Spongy Pedal Feel

Depress the clutch pedal slowly and feel for lateral movement or wobble in the pedal body.petrol2012–2021TransmissionDoes not apply$80–$350

CommonTransmission $80–$350 to fix

Does not apply

The ZC6 BRZ manual transmission clutch pedal assembly uses plastic pivot bushes at the pedal fulcrum point. These bushes wear progressively with accumulated clutch actuations and with age, introducing lateral slop and flex into the pedal mechanism. The result is a spongy, imprecise pedal feel, increased freeplay, and an inconsistent bite point that progressively worsens. At high mileage the slop is sufficient to make precise heel-and-toe downshifting difficult and can cause unintended partial clutch slip. The bush itself is an inexpensive part but access requires removal of the lower dashboard trim panel to reach the pedal assembly pivot bolt.

Symptoms to notice

Spongy or vague clutch pedal feel with no firm, consistent engagement point
Increased clutch pedal freeplay that grows progressively worse over time
Lateral wobble or side-to-side slop detectable when the clutch pedal is depressed
Inconsistent clutch bite point that makes heel-and-toe downshifting unreliable
Clunk from the pedal assembly on clutch engagement or rapid release

What to check

Depress the clutch pedal slowly and feel for lateral movement or wobble in the pedal body.
Measure pedal freeplay against the factory specification of 10 to 15 mm. Grip the clutch pedal firmly and attempt to rock it side to side — any detectable play indicates worn pivot bushes.
Compare pedal feel with a low-mileage reference car if possible.
Inspect under the dash for the pivot bolt and visible bush condition without needing trim removal.

Where to look: Interior cabin — clutch pedal pivot bush at the pedal fulcrum, under the dashboard

Parts involved: Clutch.

Ask the seller

“Does the clutch pedal feel firm and precise with a clearly defined bite point?”
“Has the clutch pedal pivot bush been inspected or replaced?”
“What is the total mileage on the vehicle?”
“Has the car been used predominantly in stop-start urban traffic, which increases clutch cycle count?”

Body, brakes, suspension & interior5

01Boot Lid Water Ingress Through Rear Weatherstrip Seal Failure

With a torch, inspect the spare wheel well for standing water or rust staining.petrol2012–2021Body & RustDoes not apply$280–$1,800

OccasionalBody & Rust $280–$1,800 to fix

Does not apply

The BRZ boot lid weatherstrip seal degrades over time, losing its compression set. Combined with the relatively shallow rear tub design, degraded seals allow water to track into the spare wheel well and boot floor during rain or high-pressure washing. Water can pool in the spare tyre recess and wick into the rear quarter trim panels, promoting hidden corrosion of the boot floor sheet metal and damaging the audio amplifier and wiring looms routed in the boot area.

Symptoms to notice

Damp or musty smell from the boot area after rain or car washing, with water visible in the spare wheel well
Rust staining or surface corrosion on the boot floor sheet metal and spare tyre housing, visible after lifting the mat
Audio system faults or amplifier failure caused by water ingress to the wiring and components routed beneath the boot floor

What to check

With a torch, inspect the spare wheel well for standing water or rust staining.
Press and roll the weatherstrip rubber around the full perimeter of the boot opening — flattened or cracked sections indicate seal failure.
Lift the boot mat and inspect for damp or rust-tinged foam.
Check the audio amplifier (if fitted) under the boot floor carpet for corrosion or water damage to connectors.

Where to look: Boot lid rubber weatherstrip seal, boot floor drain plugs, and rear quarter panel drain channels

Parts involved: Body corrosion.

Ask the seller

“Has the boot ever had any water ingress or a musty smell?”
“Can you lift the boot mat so I can inspect the spare wheel well and floor?”
“Has the boot lid weatherstrip ever been replaced?”

02Propshaft Intermediate Bearing Drone 30–50 km/h

Inspect the intermediate propshaft bearing rubber isolator for cracking or separation from the metal carrier.petrol2012–2021SuspensionDoes not apply$700–$1,800

CommonSuspension $700–$1,800 to fix

Does not apply

The ZC6 BRZ uses the identical two-piece propeller shaft and intermediate carrier bearing assembly as the Toyota 86 ZN6, sourced from the same Subaru-side supplier. The rubber isolation bonding compound between the bearing outer housing and the crossmember bracket hardens and loses damping compliance with age, temperature cycling, and ozone exposure — a common outcome in the Australasian climate. Hardened isolation allows shaft rotational vibration to transmit at frequencies that resonate with the ZC6 floor pan structure between approximately 30 and 50 km/h, producing a drumming or droning vibration felt through the seat and floor. The speed-band-specific nature of the symptom — absent at idle and above highway speed — causes frequent misdiagnosis as a tyre balance or road surface issue. Subaru Australia issued informal dealer awareness documentation on this failure; aftermarket single-piece propshaft replacements are a common permanent resolution.

Symptoms to notice

Speed-dependent drone through the floor at 30–50 km/h disappearing above 70 km/h
Vibration unchanged whether accelerating, coasting in gear, or coasting in neutral
Drone not eliminated by tyre rotation, balancing, or tyre replacement
Roughness or knock from beneath the cabin floor in advanced cases of bearing race failure

What to check

Inspect the intermediate propshaft bearing rubber isolator for cracking or separation from the metal carrier. On the test drive, hold a steady 40 km/h on smooth tarmac and confirm the vibration is mechanical, speed-dependent, and not influenced by throttle position. If a workshop inspection is possible: With the car raised on stands, rotate the shaft slowly by hand through the bearing to feel for roughness.

Where to look: Propeller shaft — intermediate carrier bearing with rubber isolation bonding, crossmember bracket mount

Ask the seller

“Has there been any floor vibration or drone between 30 and 50 km/h that disappears at speed?”
“Has the propshaft intermediate bearing or entire propshaft been replaced?”
“Has the car been parked or stored outdoors in a hot climate for extended periods?”

03Rear Hub Wheel Bearing Premature Failure

Spin the hub slowly by hand and feel for roughness or cyclic rumble.petrol2012–2021SuspensionDoes not apply$550–$1,200

CommonSuspension $550–$1,200 to fix

Does not apply

The ZC6 BRZ uses the same pressed-in double-row angular contact rear wheel bearing as the Toyota 86 ZN6 platform. The BRZ's low centre of gravity and high lateral cornering capability generate sustained bearing loads that significantly exceed those of typical compact hatchbacks of equivalent weight. Enthusiast owners using semi-slick or track-compound tyres report bearing failure onset as early as 40,000km. The bearing outer race integrates the ABS reluctor ring, meaning a degraded bearing can falsely trigger ABS intervention before the driver notices any mechanical symptom. Failure to replace the bearing promptly once rumble begins risks damaging the ABS ring and knuckle bore, converting a straightforward bearing press into a more costly knuckle replacement. Wheel alignment should be confirmed after hub removal as toe angle can shift.

Symptoms to notice

Low-pitched droning from the rear correlated with road speed
Noise amplitude changing under lateral weight transfer during cornering
Vibration felt through the floor and seat at motorway speeds
Spurious ABS activation at low speeds on dry straight roads

What to check

Spin the hub slowly by hand and feel for roughness or cyclic rumble. On the test drive note whether the noise diminishes when cornering left versus right — this is diagnostic of which side is failing. Ask when bearings were last inspected or replaced. If a workshop inspection is possible: Jack and support each rear corner; rock the wheel in all planes to check for bearing play.

Where to look: Rear knuckle carrier — pressed-in double-row angular contact bearing with integrated ABS reluctor ring

Parts involved: Wheel bearing.

Ask the seller

“Have the rear wheel bearings been replaced, and at what kilometre mark?”
“Has the car been used for circuit days or fitted with performance or semi-slick tyres?”
“Has the ABS warning illuminated or ABS activated on dry roads at low speed?”

04Front Hub Bearing Premature Failure Under Negative Camber

Rock each wheel at 12 and 6 o'clock to detect axial play.petrol2012–2021SuspensionDoes not apply$350–$900Read the full fault: symptoms, where to look, what to ask the seller

05Strut Top Mount Bearing Failure Causing Steering Click

The ZC6 BRZ upper strut mount incorporates a bearing plate that allows the strut to rotate relative to the body as the steering is turned.petrol2012–2021SuspensionDoes not apply$280–$750

CommonSuspension $280–$750 to fix

Does not apply

The ZC6 BRZ upper strut mount incorporates a bearing plate that allows the strut to rotate relative to the body as the steering is turned. These bearing plates degrade with age and mileage, and wear accelerates markedly on cars fitted with aftermarket coilovers that increase the load transferred through the mount. Failure produces a sharp metallic clicking or clunking sensation transmitted directly through the steering wheel when traversing sharp bumps, dips, or speed humps. The noise is characteristic and easily reproduced. If left unaddressed the worn mount also degrades steering self-centring and can contribute to unpredictable on-centre feel.

Symptoms to notice

Sharp metallic click or clunk from front suspension when traversing sharp bumps
Click transmitted through the steering wheel when turning over rough surfaces
Noise reproducible by rocking the steering wheel at a stationary vehicle
Steering self-centring feels vague, stiff, or notchy at low speed

What to check

With the vehicle stationary and engine off, have an assistant rock the steering wheel left and right while you press your hand on each strut tower in turn to feel for clicking movement.
Drive slowly over a sharp speed hump and listen for a metallic click from the strut top area.
Inspect each strut top mount for cracking, corrosion, or a worn bearing plate.
Check whether aftermarket coilovers are fitted as these significantly accelerate bearing wear.

Where to look: Front suspension — upper strut mount bearing plates at both strut towers

Parts involved: Shock absorber / strut.

Ask the seller

“Has the car been fitted with aftermarket coilovers or lowering springs?”
“Is there any clicking or clunking noise from the front suspension over sharp bumps?”
“Have the strut top mounts or strut bearing plates been replaced?”
“Has a wheel alignment been completed after any suspension modification?”

Fluid leaks1

01Rear Differential Output Shaft Oil Seal Leak

Check differential fluid level via the fill plug — low level confirms loss through seals.petrol2012–2021Fluid LeaksDoes not apply$300–$900

OccasionalFluid Leaks $300–$900 to fix

Does not apply

The rear differential has two output shaft seals (one per rear driveshaft stub axle) that are press-fit into the differential casing. These lip seals can weep gear oil over time, particularly after the differential oil has not been serviced. The leak is often slow and presents as oily residue on the inner face of the rear wheels or a burning smell from oil dripping onto the exhaust under-body heat shields.

Symptoms to notice

Oily residue or gear oil film on the inboard face of the rear brake discs or drums, sometimes causing brake pull or glazing
Burning gear oil smell from the underside of the car, particularly after highway driving where oil contacts exhaust heat shields
Progressively dropping rear differential fluid level confirmed when checking via the fill plug

What to check

Check differential fluid level via the fill plug — low level confirms loss through seals.
Look for oil accumulation on the rear subframe and under-body heat shields.
If a workshop inspection is possible: Remove rear wheels and inspect the inboard face of the brake disc and the differential casing flange at both driveshaft outputs for oily residue or gear oil staining.

Where to look: Rear differential casing at each driveshaft output, visible behind the rear road wheels

Parts involved: Differential.

Ask the seller

“Have the rear wheels been removed recently and was any oily residue noticed on the brake components?”
“Has the rear differential fluid ever been serviced?”
“Is there any smell of burning oil from the underside of the car after driving?”

Subaru BRZ faults in detail

Narrowed to the Subaru BRZ · 2022. Each of these has its own page: the symptoms, where to look, what to ask the seller and what the repair costs. Free, no account needed.

6-Speed Manual Transmission 2nd Gear Synchro WearMajor · Transmission FA24D Direct Injection Intake Valve Carbon BuildupMajor · Engine

What these repairs cost on other cars

Some of the Subaru BRZ’s documented faults are repairs other models share. Each page lists the documented NZ cost for every model it affects.

Timing Chain Replacement Cost

Other Subaru models

Subaru Legacy54 documented faults Subaru Forester50 documented faults Subaru Impreza44 documented faults Subaru XV19 documented faults Subaru Levorg13 documented faults Subaru Tribeca12 documented faults

Subaru BRZ buyer questions

Is the Subaru BRZ reliable?

Like any used car, it depends on the specific example and its service history. Across the 26 documented faults for the Subaru BRZ, the recurring problem areas are engine, transmission, and body & rust. A Subaru BRZ with a full service history and no signs of the issues listed on this page can be a sound buy but each one needs to be checked individually before you commit.

What are the most common problems with a used Subaru BRZ?

We've catalogued 26 known faults for the Subaru BRZ, covering engine, transmission, and body & rust. All 26 are written out in full on this page, with the symptoms to notice, what to inspect, and typical repair costs for each. Free to read, no account needed.

How much do repairs cost on a Subaru BRZ?

Most single repairs on the Subaru BRZ fall between $550–$1,800 at NZ independent-workshop rates. Some of the 26 documented faults cost less and a few cost considerably more, and no one car needs them all. Knowing which ones to look for before you view is what lets you negotiate the price down or walk away.

Should I get a pre-purchase inspection on a Subaru BRZ?

Yes. A Subaru BRZ inspection focused on its known weak points is the single best way to avoid an expensive mistake. KickTyres gives you a guided, model-specific inspection plus a market valuation and negotiation figure for $24.90 far less than the cost of missing one of the faults on this page.