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Toyota2012–2023 Critical issues documented

Toyota GR86 ZN8: common faults & what to check

The ZN8 is the Toyota GR86 built 2021 onward. It was sold here with the 2.4 boxer petrol. Of the 22 faults documented for the GR86, 11 apply to this generation, each with its symptoms, what to inspect and a typical repair cost. Free, no account needed.

Check this exact Toyota GR86

  • Odometer history
  • Money owing
  • Reported stolen
  • Ownership history
  • Official NZ vehicle register data
  • NZ owned and operated

Type the plate for the free basics. The full record is a paid check from $13.49, one car at a time, no subscription.

No NZ plate yet, or buying in Australia? Pick the generation and engine and start a free check below. New to KickTyres? How the check works →

22

Documented faults

Critical

Most serious

$550–$1,200

Typical repair

7

Service milestones

You're looking at the ZN8 · 2.4 boxer petrol

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

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.

A 2022 Toyota GR86 is the ZN8 generation (2021 to now).

Start your free check on this Toyota GR86

No plate needed. You get the risk score, the buyer's checklist and the guided inspection for the exact car you picked above — not the whole nameplate.

Toyota GR86 ZN8

Free. The paid plate check is separate, and stays optional.

Likely — same engine family

Toyota GR86 · 2022

Narrowed by capacity and fuel. No engine code is recorded for this option, so a fault specific to one engine of that size cannot be confirmed from it.

Matched on capacity and fuel, not on an engine code.

  • 2 documented faults name an engine this selection cannot confirm. They are listed separately below.

matched on 2.4L engine

What to look out for

The checks worth doing on a Toyota GR86 before you hand over any money. Every documented fault is listed below, each with its own page.

  • Serious issue

    Ask seller directly about track use history.

    See why

    FA24 big-end bearing failure on high-revving track-driven examples

    A subset of GR86 owners who regularly drive their cars at or near the 7,500 rpm redline on track have experienced FA24 big-end (connecting rod) bearing failure. The failure mode appears linked to oil starvation during sustained high-lateral-g cornering, where the wet-sump oil supply to the main and big-end bearings is interrupted. This is documented on GR86 track-use threads and is similar to the oil surge issue that affected the previous FA20 engine. The result is spun or destroyed bearings requiring a partial or full engine rebuild.

    What you would notice

    • Deep knocking sound from the engine that worsens under load
    • Sudden loss of oil pressure warning light during or after track use
    • Metallic particles visible in oil at service
    • Engine may develop a tick that rapidly progresses to a knock

    Typically $5,000–$12,000 to put right.

  • Costly issue

    Conduct a cold-start test drive and check for hesitation during the first few minutes of operation.

    See why

    FA24D GDI Intake Valve Carbon Buildup

    The FA24D 2.4-litre engine in the GR86 uses gasoline direct injection without supplementary port injection, so fuel does not wash the intake valves during normal operation. Oil vapour recirculated through the positive crankcase ventilation system deposits as carbon on intake valve stems, faces, and seats over time. As deposits accumulate they restrict airflow into cylinders, causing progressively rough cold starts, hesitation under light throttle, misfires at low RPM, and measurable power loss. This is an inherent design characteristic of GDI engines and becomes functionally significant from around 60,000 to 80,000 km without proactive cleaning. The same engine is used in the Subaru BRZ ZD8 and exhibits identical behaviour.

    What you would notice

    • Rough or lumpy idle particularly when cold
    • Hesitation or stumbling under light to moderate acceleration
    • Engine misfires at low RPM, especially below 2,500 RPM
    • Increased fuel consumption without change in driving pattern
    • Hard starting on cold mornings

    Typically $800–$1,800 to put right.

  • Costly issue

    Cold-start the vehicle (engine must have been off overnight or several hours) and listen for chain rattle from the front-left of the flat-four engine.

    See why

    FA24 flat-four timing chain cold-start rattle — tensioner oil-pressure lag

    Early production Toyota GR86 (ZN8, FA24 2.4-litre boxer) examples exhibited a documented cold-start timing chain rattle caused by the hydraulic tensioner not maintaining pressure after the engine is shut down. Oil drains from the tensioner allowing chain slack on initial start. This was widely reported on GR86 forums and Toyota addressed it via a revised tensioner in later production. Cars built before the running change or not yet updated remain susceptible. The noise itself indicates a real risk of chain wear if the root cause is not corrected.

    What you would notice

    • Rattling from the engine for the first 2–4 seconds after a cold start
    • Noise stops once oil pressure is established
    • No fault codes in most cases
    • Potentially worsened in cold morning temperatures

    Typically $1,100–$3,200 to put right.

  • Costly issue

    Rear limited-slip differential bearings wear causing howling noise under acceleration.

    See why

    Rear Differential Bearing Wear on High-Mileage Examples

    Rear limited-slip differential bearings wear causing howling noise under acceleration.

    What you would notice

    • Rear limited-slip differential bearings wear causing howling noise under acceleration.
    • Confirm with pre-purchase inspection by a qualified mechanic
  • Common issue

    Start the engine cold and observe the exhaust tailpipe for the first 30–60 seconds.

    See why

    FA24D Valve Stem Seal Oil Leakage (GR86 2022–2023)

    The FA24D 2.4-litre naturally aspirated boxer engine introduced in the 2022 GR86 (ZN8) has accumulated owner reports of valve stem seal degradation causing oil to seep past the intake valve guides into the combustion chamber. The fault presents primarily as blue smoke on cold start, clearing after the engine reaches operating temperature, and is accompanied by elevated oil consumption. Community fault threads on GR86-specific forums document this as a repeat presentation across multiple markets including Australia and New Zealand.

    What you would notice

    • Blue or grey smoke from exhaust on cold start that dissipates within one to two minutes of warm-up
    • Gradually increasing oil consumption between service intervals on a low-mileage engine
    • Occasional misfires or rough idle on a cold start due to oil-fouled spark plugs
    • Faint oil smell from the exhaust during first start of the day

    Typically $1,200–$2,800 to put right.

  • Common issue

    Rear differential pinion shaft seal weeps gear oil causing low level and bearing damage.

    See why

    Rear Differential Pinion Seal Oil Leak

    Rear differential pinion shaft seal weeps gear oil causing low level and bearing damage.

    What you would notice

    • Rear differential pinion shaft seal weeps gear oil causing low level and bearing damage.
    • Confirm with pre-purchase inspection by a qualified mechanic

A 2022 Toyota GR86: what is due, and when

Servicing

Next service

60,000 km

Spark plug replacement starts coming up, and the serpentine belt should be checked.

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

  • 15,000 kmThe break-in service and oil change; watch for any early signs it is using oil.
  • 30,000 kmThe standard major service, with a brake fluid flush and fresh differential oil.

Ahead of it

  • 100,000 kmTime for a full cooling system health check and a look at every suspension bushing.

“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 Second Generation (ZN8) · 2.4L (FA24D) - GTS · Petrol; only the car’s own service book says what has actually been done to it.

See all 11 issues for this oneDocumented for the exact year and engine you picked, including 1 rated critical.
Engine, transmission & cooling1 critical6

01FA24 big-end bearing failure on high-revving track-driven examples

Ask seller directly about track use history.petrol2021 onwardEngine
RareEngine $5,000–$12,000 to fix

A subset of GR86 owners who regularly drive their cars at or near the 7,500 rpm redline on track have experienced FA24 big-end (connecting rod) bearing failure. The failure mode appears linked to oil starvation during sustained high-lateral-g cornering, where the wet-sump oil supply to the main and big-end bearings is interrupted. This is documented on GR86 track-use threads and is similar to the oil surge issue that affected the previous FA20 engine. The result is spun or destroyed bearings requiring a partial or full engine rebuild.

Symptoms to notice

  • Deep knocking sound from the engine that worsens under load
  • Sudden loss of oil pressure warning light during or after track use
  • Metallic particles visible in oil at service
  • Engine may develop a tick that rapidly progresses to a knock

What to check

  1. Ask seller directly about track use history.
  2. Check the oil for any metallic glitter.
  3. Look for evidence of an oil catch can or baffled sump, which responsible track owners typically fit.
  4. If a workshop inspection is possible: A compression and leak-down test is advisable on any car with known track use.

Where to look: Connecting rod big-end bearings inside the FA24 flat-four engine block

Ask the seller

  • “Has this car been driven on a circuit or racetrack?”
  • “Has an oil pressure gauge or baffled sump been fitted?”
  • “Has the oil ever shown any metallic contamination at a service?”

02FA24 flat-four timing chain cold-start rattle — tensioner oil-pressure lag

Cold-start the vehicle (engine must have been off overnight or several hours) and listen for chain rattle from the front-left of the flat-four engine.petrol2021 onwardEngine
OccasionalEngine $1,100–$3,200 to fix

Early production Toyota GR86 (ZN8, FA24 2.4-litre boxer) examples exhibited a documented cold-start timing chain rattle caused by the hydraulic tensioner not maintaining pressure after the engine is shut down. Oil drains from the tensioner allowing chain slack on initial start. This was widely reported on GR86 forums and Toyota addressed it via a revised tensioner in later production. Cars built before the running change or not yet updated remain susceptible. The noise itself indicates a real risk of chain wear if the root cause is not corrected.

The front of a dual overhead camshaft engine with the timing cover removed, exposing the timing chain and sprockets.Example of the part — not this vehicle

The front of a twin-cam engine with the timing cover off — chain, sprockets and guides.

Logansenf · CC BY-SA 4.0 · Wikimedia Commons

Symptoms to notice

  • Rattling from the engine for the first 2–4 seconds after a cold start
  • Noise stops once oil pressure is established
  • No fault codes in most cases
  • Potentially worsened in cold morning temperatures

What to check

Cold-start the vehicle (engine must have been off overnight or several hours) and listen for chain rattle from the front-left of the flat-four engine. Confirm whether the tensioner has been updated under any Toyota service action.

Where to look: Timing chain and hydraulic tensioner on the front of the FA24 flat-four engine

Parts involved: Timing chain.

Ask the seller

  • “Does the car rattle on a cold start for the first few seconds?”
  • “Has the timing chain tensioner been updated or replaced?”
  • “Has the car been to a Toyota dealer for any recall or service campaign work?”

03FA24D GDI Intake Valve Carbon Buildup

Conduct a cold-start test drive and check for hesitation during the first few minutes of operation.petrol2021 onwardEngineRead the full fault: symptoms, where to look, what to ask the seller

04Rear Differential Bearing Wear on High-Mileage Examples

Rear limited-slip differential bearings wear causing howling noise under acceleration.Transmission
OccasionalTransmission

Rear limited-slip differential bearings wear causing howling noise under acceleration.

Symptoms to notice

  • Rear limited-slip differential bearings wear causing howling noise under acceleration.
  • Confirm with pre-purchase inspection by a qualified mechanic

What to check

Rear limited-slip differential bearings wear causing howling noise under acceleration.

Where to look: See description

Parts involved: Differential.

05FA24D Valve Stem Seal Oil Leakage (GR86 2022–2023)

Start the engine cold and observe the exhaust tailpipe for the first 30–60 seconds.petrol2022–2023Engine
CommonEngine $1,200–$2,800 to fix

The FA24D 2.4-litre naturally aspirated boxer engine introduced in the 2022 GR86 (ZN8) has accumulated owner reports of valve stem seal degradation causing oil to seep past the intake valve guides into the combustion chamber. The fault presents primarily as blue smoke on cold start, clearing after the engine reaches operating temperature, and is accompanied by elevated oil consumption. Community fault threads on GR86-specific forums document this as a repeat presentation across multiple markets including Australia and New Zealand.

Symptoms to notice

  • Blue or grey smoke from exhaust on cold start that dissipates within one to two minutes of warm-up
  • Gradually increasing oil consumption between service intervals on a low-mileage engine
  • Occasional misfires or rough idle on a cold start due to oil-fouled spark plugs
  • Faint oil smell from the exhaust during first start of the day

What to check

  1. Start the engine cold and observe the exhaust tailpipe for the first 30–60 seconds; blue-tinged smoke that clears as the engine warms indicates valve stem seal leakage.
  2. Check oil consumption by comparing dipstick readings against service intervals.
  3. Inspect the spark plugs for oil fouling on the electrode crown.

Where to look: FA24D cylinder head – valve stem seals on intake valves, accessible from the top of the engine with cam cover removal

Ask the seller

  • “Have you noticed any blue smoke from the exhaust when starting the engine cold in the morning?”
  • “Has Toyota or a dealer investigated any oil consumption or cold-start smoke concern?”
  • “How often have you needed to top up oil between scheduled service intervals?”

06Throttle Body Carbon Fouling Causing Idle Irregularity

Throttle body bore and butterfly accumulate carbon causing irregular idle and hesitation from rest.Engine
CommonEngine

Throttle body bore and butterfly accumulate carbon causing irregular idle and hesitation from rest.

Symptoms to notice

  • Throttle body bore and butterfly accumulate carbon causing irregular idle and hesitation from rest.
  • Confirm with pre-purchase inspection by a qualified mechanic

What to check

Throttle body bore and butterfly accumulate carbon causing irregular idle and hesitation from rest.

Where to look: See description

Body, brakes, suspension & interior1

07Boot and Trunk Rear Seal Water Ingress

Rear hatch and trunk seal deteriorates allowing water ingress into the boot area, causing rust in the spare tyre well.Body & Rust
OccasionalBody & Rust

Rear hatch and trunk seal deteriorates allowing water ingress into the boot area, causing rust in the spare tyre well.

Symptoms to notice

  • Rear hatch and trunk seal deteriorates allowing water ingress into the boot area, causing rust in the spare tyre well.
  • Confirm with pre-purchase inspection by a qualified mechanic

What to check

Rear hatch and trunk seal deteriorates allowing water ingress into the boot area, causing rust in the spare tyre well.

Where to look: See description

Fluid leaks2

08Rear differential output shaft seal leak

Check the diff oil level via the fill plug if accessible.petrol2021 onwardFluid Leaks
OccasionalFluid Leaks $350–$800 to fix

A proportion of GR86 ZN8 owners have reported rear differential output shaft seal leaks, resulting in gear oil seepage from the diff housing. This is identified by oil residue around the rear differential and a gradual reduction in diff oil level. If undetected, low differential oil causes premature wear and ultimate failure of the rear diff internals. The ZN8 diff shares design lineage with previous 86/BRZ platforms where similar seal degradation was noted on used examples.

Symptoms to notice

  • Gear oil smell from underneath the rear of the car
  • Oily residue or wet patch on the rear differential housing
  • Differential whine or slight vibration at speed if oil has run low

What to check

  1. Check the diff oil level via the fill plug if accessible.
  2. Look for oil residue on the rear subframe or driveshafts.
  3. If a workshop inspection is possible: Put the car on a hoist and inspect both output shaft seal areas on the rear differential for oil weeping.

Where to look: Rear differential output shaft seals, left and right, on the Torsen rear diff

Parts involved: Differential.

Ask the seller

  • “Has the rear differential oil ever been changed or inspected?”
  • “Is there any oil residue under the rear of the car?”
  • “Has any differential leak been noted at WOF inspections?”

09Rear Differential Pinion Seal Oil Leak

Rear differential pinion shaft seal weeps gear oil causing low level and bearing damage.Fluid Leaks
CommonFluid Leaks

Rear differential pinion shaft seal weeps gear oil causing low level and bearing damage.

Symptoms to notice

  • Rear differential pinion shaft seal weeps gear oil causing low level and bearing damage.
  • Confirm with pre-purchase inspection by a qualified mechanic

What to check

Rear differential pinion shaft seal weeps gear oil causing low level and bearing damage.

Where to look: See description

Parts involved: Differential.

Depends on the exact engine — 2 moreDocumented for a specific engine we could not confirm from what you picked. Check the engine code on the car.
Engine, transmission & cooling2

016-Speed Manual 2nd Gear Synchromesh Wear

During the test drive, perform repeated 1st-to-2nd and 3rd-to-2nd downshifts at normal and slightly hurried pace.petrol2012–2023Transmission
CommonTransmission $2,000–$4,500 to fix

Can't confirm for this car

The Aisin TR690 6-speed manual gearbox fitted to the 86 exhibits premature wear of the 2nd gear synchroniser ring, particularly in cars subjected to frequent hard or hurried shifts and those used on track. The synchro ring's friction material wears faster than expected for the gearbox's rated capacity, causing progressively worsening resistance and grinding when engaging 2nd gear. The fault is compounded by the engine's peaky power delivery encouraging drivers to shift quickly through the lower ratios.

Symptoms to notice

  • Grinding or crunching noise when shifting into 2nd gear, especially during hurried upshifts
  • Resistance or notchy engagement when selecting 2nd gear from either 1st or 3rd
  • Fault is more pronounced when the gearbox oil is cold
  • Gearbox requires deliberate slow shift technique to engage 2nd without grinding
  • Condition worsens progressively with mileage if not repaired

What to check

During the test drive, perform repeated 1st-to-2nd and 3rd-to-2nd downshifts at normal and slightly hurried pace. Any grinding, notchiness, or resistance to engaging 2nd gear indicates synchro wear. Cold gearboxes are more revealing – test early in the drive before oil warms. Check for any grinding under heel-and-toe downshifts.

Where to look: Aisin TR690 6-speed manual gearbox – 2nd gear synchroniser ring, gearbox is located beneath the centre console/tunnel

Ask the seller

  • “Have you noticed any grinding or resistance when shifting into 2nd gear, especially when driving quickly?”
  • “Has the gearbox ever been inspected or the transmission oil changed, and do you have records?”
  • “Has the car been used on a racetrack or in any competitive driving events?”

02FA24 Clutch Master Cylinder Internal Seal Failure

Check clutch fluid reservoir level and fluid colour — contaminated or dark fluid indicates overdue replacement and accelerated seal degradation.petrol2021 onwardTransmission
OccasionalTransmission $380–$950 to fix

Can't confirm for this car

The ZN8 GR86 six-speed manual transmission uses hydraulic clutch actuation via a firewall-mounted master cylinder and a concentric slave cylinder at the gearbox bellhousing. The internal cup seal in the master cylinder bore is susceptible to premature deterioration from heat cycling in the compact engine-bay-firewall location and from hygroscopic fluid moisture absorption that degrades seal material over time. Seal bypass allows hydraulic fluid to slip past the piston under pedal application rather than transmitting pressure to the slave cylinder. Onset is progressive: first noted as a low bite point migrating toward the floor, then spongy feel under load, then the pedal slowly sinking during sustained hold at a traffic light. Full seal failure renders the clutch inoperative. The same master cylinder specification is shared with the ZD8 BRZ. Master cylinder replacement does not require transmission removal.

Symptoms to notice

  • Clutch engagement point migrating progressively lower toward the floor over weeks
  • Spongy or inconsistent pedal feel not corrected by bleeding the system
  • Clutch pedal slowly creeping to the floor under sustained hold at a standstill
  • Clutch fluid reservoir level dropping with no visible external leaks

What to check

  1. Check clutch fluid reservoir level and fluid colour — contaminated or dark fluid indicates overdue replacement and accelerated seal degradation.
  2. Inspect the firewall around the master cylinder body for weeping fluid stains.
  3. With the engine running, hold the clutch pedal down firmly for 30 seconds and note whether the engagement point creeps lower — this confirms internal bypass.
  4. Confirm fluid change history.

Where to look: Engine bay firewall — hydraulic clutch master cylinder body, piston bore internal cup seal and reservoir

Parts involved: Clutch.

Ask the seller

  • “Has the clutch pedal ever felt spongy, low, or slowly sunk to the floor during a drive?”
  • “Has the clutch master cylinder been replaced, whether under warranty or as a repair?”
  • “When was the clutch hydraulic fluid last replaced?”
  • “Has the clutch engagement point shifted noticeably since new?”
Other Toyota GR86 engines and years11 documented issues that do not apply to the one you picked.
Engine, transmission & cooling4

01FA20D Oil Starvation Under Sustained High-Lateral-G Cornering

Ask seller about any track or motorsport use in the vehicle's history.petrol2012–2016Engine
OccasionalEngine $600–$2,000 to fix

Does not apply

The early FA20D sump design places the oil pickup in a position susceptible to oil surge under sustained lateral acceleration, such as on a circuit or aggressive road driving. Oil migrates away from the pickup under cornering loads, causing momentary or sustained oil pressure loss. Toyota and Subaru acknowledged the issue and made an oil baffle plate upgrade available through dealer service bulletins; aftermarket baffles and accusumps became widely adopted by track users.

Symptoms to notice

  • Oil pressure warning light illuminating briefly during hard cornering or track sessions
  • Engine noise momentarily increasing under sustained high-G lateral loads
  • History of low-oil-pressure codes in the ECU fault log
  • Subsequent bore or bearing damage discovered on teardown following track use

What to check

  1. Ask seller about any track or motorsport use in the vehicle's history.
  2. Check for presence of an upgraded oil baffle plate (visible on service records or from a specialist who has had the sump off).
  3. Inspect for oil pressure warning light history in the service log.
  4. If a workshop inspection is possible: On older examples with track history, request a leakdown test.

Where to look: FA20D oil sump and oil pickup tube – horizontal boxer engine layout below the crankshaft centreline

Ask the seller

  • “Has this car been used on a racetrack or driven in any motorsport events?”
  • “Has the oil baffle plate upgrade been fitted, and is there a receipt for that work?”
  • “Has the car ever triggered an oil pressure warning light during spirited driving?”

02Rear LSD Clutch Pack Wear from Aggressive Use

Drain differential oil and inspect colour and smell — burnt or dark fluid with friction material particles indicates degraded clutch packs.petrol2012–2021Transmission
OccasionalTransmission $850–$2,800 to fix

Does not apply

ZN6 86 GT and GTS models were optionally fitted with a Torsen Type-1 helical LSD; many owners upgrade to or install a clutch-type plate differential (OS Giken, Cusco, Kaaz) for performance driving. Clutch-type plate differentials on this platform are sensitive to heat cycling and lubricant degradation. Repeated aggressive corner exits, wet-road launches, and autocross use without correct LSD oil maintenance cause progressive friction material loss from the clutch pack. Worn packs lose locking capacity asymmetrically — first becoming inconsistent under partial throttle before eventually behaving as an open differential. Even factory Torsen units develop clunking from worn thrust surfaces after sustained motorsport use. The correct service is GL-5 fluid with friction modifier at 20,000–25,000km intervals; owners using standard gear oil without modifier accelerate pack wear significantly.

Symptoms to notice

  • Clunking or banging from rear axle during slow tight-radius parking manoeuvres
  • Loss of drive traction on corner exit under power despite LSD fitment
  • Chattering or juddering through the seat during slow sharp cornering on tight turns
  • Differential oil smelling burnt or discoloured at drain-down

What to check

  1. Drain differential oil and inspect colour and smell — burnt or dark fluid with friction material particles indicates degraded clutch packs.
  2. Perform slow-speed tight-radius turn in a car park and listen for LSD engagement clunk.
  3. Inspect for aftermarket LSD and request full differential service history including fluid specifications used.

Where to look: Rear differential housing — LSD clutch pack and spider gear assembly

Parts involved: Clutch.

Ask the seller

  • “Is the differential a factory Torsen unit or an aftermarket clutch-type plate LSD?”
  • “When was the differential oil last changed, and was friction modifier included?”
  • “Has the differential been rebuilt or the clutch packs replaced?”
  • “Has the car been used in autocross, circuit days, or drift events?”

03Manual Transmission 4th/5th Gear Synchro Wear on Track Examples

Test shift into 4th and 5th gear several times under moderate deceleration.2012–2021Transmission
OccasionalTransmission $600–$2,000 to fix

Does not apply

The 86 manual transmission 4th and 5th gear synchromesh rings wear on track-driven examples from sustained high-rpm engagement. Worn synchros cause baulking and grinding when changing into the affected gear under normal road conditions.

Symptoms to notice

  • Grinding or baulking when shifting into 4th or 5th gear
  • Grinding that worsens when shifting quickly under deceleration

What to check

  1. Test shift into 4th and 5th gear several times under moderate deceleration.
  2. Grinding or baulking when engaging the gear indicates synchro wear.
  3. Ask about track or spirited use history.

Where to look: Manual transmission 4th and 5th gear synchromesh rings

Ask the seller

  • “Has the manual transmission 4th/5th gear synchro been inspected or repaired?”

04Clutch Master Cylinder Internal Seal Failure

During the test drive, hold the clutch pedal depressed for 30 seconds and check if it slowly sinks toward the floor.petrol2012–2021Transmission
OccasionalTransmission $350–$750 to fix

Does not apply

The clutch master cylinder on manual 86 models develops internal seal deterioration causing hydraulic fluid bypass within the cylinder bore. The result is a clutch pedal that gradually loses pressure, sinks toward the floor under sustained pressure, or requires repeated pumping to restore clutch disengagement. In acute failure the pedal drops to the floor mid-drive, leaving the driver unable to select gears. This is a documented wear pattern across multiple ZN6 production years and is distinct from normal clutch plate wear.

Symptoms to notice

  • Clutch pedal slowly sinks to the floor when held depressed for more than 20–30 seconds
  • Clutch requires pumping two or three times to restore full disengagement
  • Difficulty selecting gears or gears crunching as clutch fails to fully release
  • Clutch fluid reservoir level drops without any visible external leak
  • Spongy or inconsistent clutch pedal feel that varies with temperature

What to check

  1. During the test drive, hold the clutch pedal depressed for 30 seconds and check if it slowly sinks toward the floor.
  2. Inspect the clutch master cylinder reservoir (located on the firewall, driver's side) for fluid level and for any discolouration indicating contamination.
  3. Check around the cylinder body for external fluid weeping.

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

Parts involved: Clutch.

Ask the seller

  • “Has the clutch pedal ever felt spongy, sunk slowly to the floor, or required pumping to engage gears?”
  • “Has the clutch master or slave cylinder ever been replaced, and do you have documentation?”
  • “When was the clutch hydraulic fluid last changed or inspected?”
Body, brakes, suspension & interior6

01Propshaft Intermediate Bearing Drone 30–50 km/h

With the vehicle raised, rotate the propshaft by hand and feel for roughness and rumble at the intermediate bearing.petrol2012–2021Suspension
CommonSuspension $700–$1,800 to fix

Does not apply

The ZN6 86 uses a two-piece propeller shaft with a centre support intermediate bearing mounted to a pressed-steel crossmember bracket beneath the cabin floor. The rubber isolation bonding ring that decouples the bearing housing from the crossmember is prone to early hardening and delamination caused by heat, ozone, and age. Once the rubber isolation loses compliance, rotational vibration from the propeller shaft transfers directly into the body structure at frequencies that resonate with the floor pan at approximately 30–50 km/h. Above 70 km/h the resonance frequency falls outside the excitation range and the drone disappears. This speed-band-specific nature frequently leads to misdiagnosis as a tyre or wheel-balance issue. In progressive failure the bearing race itself degrades with increasing roughness, and if neglected will fail catastrophically requiring an emergency tow. The vibration is equally present under power, overrun, and neutral coasting — distinguishing it from drivetrain-load-dependent faults.

Symptoms to notice

  • Low-frequency drone or floor vibration appearing at 30–50 km/h and disappearing above 70 km/h
  • Vibration present equally under acceleration, engine braking, and neutral coasting
  • Roughness or knocking from below the cabin floor in advanced bearing degradation
  • Vibration unaffected by tyre rotation or wheel balancing

What to check

With the vehicle raised, rotate the propshaft by hand and feel for roughness and rumble at the intermediate bearing. Inspect the rubber isolation ring surrounding the bearing carrier for cracking, splitting, or delamination from the metal housing. On the test drive maintain a steady 40 km/h on smooth tarmac and confirm the vibration is speed-dependent but not throttle-dependent — ruling out tyres and wheel balance.

Where to look: Two-piece propeller shaft — intermediate carrier bearing, rubber isolation bonding ring, crossmember bracket mount

Ask the seller

  • “Has the intermediate propshaft bearing or entire propeller shaft been replaced?”
  • “Is there a floor vibration or drone at 30–50 km/h that disappears at highway speed?”
  • “Has the car been stored outdoors in high-heat conditions that could harden rubber mounts?”

02Rear Hub Wheel Bearing Premature Failure

Spin each rear wheel slowly by hand and feel for roughness or rumble through the hub.petrol2012–2021Suspension
CommonSuspension $550–$1,200 to fix

Does not apply

The ZN6 86 rear wheel bearings are pressed-in double-row angular contact units integrated into the rear knuckle carrier. Under the lateral cornering loads generated by a lightweight rear-wheel-drive sports car — especially with performance or semi-slick tyres — the factory bearings experience accelerated inner race fatigue compared to a conventional passenger car of similar weight. The bearing contact zone is optimised for standard road use and is not rated for sustained track cornering at elevated lateral G. Failure begins as a cyclic drone that increases with vehicle speed and changes character under lateral weight transfer, progressing to roughness and ultimately to hub wobble with tyre-to-guard contact in extreme cases. The integrated ABS tone ring on the outer bearing race means a damaged bearing can also trigger spurious ABS activation before audible symptoms become pronounced.

Symptoms to notice

  • Cyclic droning noise from the rear axle that increases with vehicle speed
  • Drone pitch changing when weight transfers laterally during lane changes or mild corners
  • Vibration felt through the floor and seat at highway speeds
  • ABS activating spuriously at low speed on dry roads with no brake input

What to check

Spin each rear wheel slowly by hand and feel for roughness or rumble through the hub. On a test drive, note whether the drone changes when steering slightly left versus right — this identifies the failing side. If a workshop inspection is possible: With the vehicle on stands, grip each rear wheel at the 3 and 9 o'clock positions and rock firmly to check for bearing play, then repeat at 12 and 6 o'clock.

Where to look: Rear knuckle carrier — double-row angular contact wheel bearing and hub assembly with integrated ABS tone ring

Parts involved: Wheel bearing.

Ask the seller

  • “Have the rear wheel bearings been replaced, and at what mileage?”
  • “Has the car been used on circuit or fitted with semi-slick tyres generating high cornering loads?”
  • “Has the ABS warning light ever illuminated or ABS activated unexpectedly on dry roads?”

03Front Lower Arm Ball Joint Wear

Inspect the boot for splitting.2012–2021Suspension
CommonSuspension $300–$700 to fix

Does not apply

Front lower arm ball joints wear causing clunking and handling imprecision on the lightweight 86.

The front wheel of a car splayed outward with the lower control arm hanging down after a ball joint separation.Example of the part — not this vehicle

A separated lower ball joint: the control arm has dropped and the wheel has splayed out under the guard.

Elfix · CC0 · Wikimedia Commons

Symptoms to notice

  • Clunking from front suspension over bumps
  • Imprecise handling feel when cornering

What to check

Inspect the boot for splitting. If a workshop inspection is possible: With vehicle raised, lever the lower arm and check for ball joint play.

Where to look: Front lower suspension control arms

Parts involved: Ball joint.

Ask the seller

  • “Has the front lower arm ball joint been inspected or repaired?”

04Brake Caliper Guide Pin Seizure

Check for pulling under braking.2012–2021Brakes
CommonBrakes $200–$600 to fix

Does not apply

Front and rear brake caliper guide pins seize from corrosion causing uneven pad wear.

Symptoms to notice

  • Vehicle pulling to one side under braking
  • One disc hotter than the other after moderate use

What to check

  1. Check for pulling under braking.
  2. Feel for uneven wheel heat.
  3. Inspect guide pins.

Where to look: Front and rear brake calipers

Parts involved: Brake disc and pads.

Ask the seller

  • “Has the brake caliper guide pin seizure been inspected or repaired?”

05Rear Multi-Link Bush Collapse

Inspect rear suspension arm bushes for cracking.2012–2021Suspension
CommonSuspension $400–$1,200 to fix

Does not apply

Rear multi-link suspension arm bushes harden and collapse causing rear knocking and handling imprecision.

Symptoms to notice

  • Knocking from rear suspension over rough surfaces
  • Imprecise rear handling feel at highway speed

What to check

  1. Inspect rear suspension arm bushes for cracking.
  2. Push arms — any movement indicates collapsed bushes.

Where to look: Rear multi-link suspension arm bushes

Ask the seller

  • “Has the rear multi-link bush collapse been inspected or repaired?”

06Front Anti-Roll Bar End Link Wear & Knocking

petrol2012–2021Suspension
CommonSuspension $150–$400 to fix

Does not apply

The front anti-roll bar end links on the ZN6 86 use ball-joint connections that wear over time, particularly on vehicles driven on rough NZ or AU roads or used at the track where suspension loading is repeated aggressively. As the ball joint develops play within its housing, a distinct knocking or clunking sound is produced over sharp bumps, speed bumps, or during abrupt cornering load transitions. The fault is common across the ZN6 fleet by the time cars reach 50,000 to 80,000 km and is regularly cited as a reason for WOF failure. Replacement is straightforward and inexpensive but the fault is often deferred by owners, causing it to appear frequently at the point of sale.

Symptoms to notice

  • Knocking or clunking sound from the front suspension over bumps
  • Noise worsens on sharp or uneven road surfaces and speed bumps
  • Knock audible during abrupt load transfer while cornering
  • Noise may be intermittent early in the fault and worsens progressively

What to check

With the front raised and supported, grasp each end link and attempt to move it laterally and vertically — worn units will show detectable play at the ball joint. Drive slowly over a sharp speed bump and listen for a clunk from either front corner. Have a passenger stand outside while you drive slowly over a kerb to isolate the source. Check whether aftermarket end links have already been fitted, indicating the factory units have already failed once.

Where to look: Front suspension, anti-roll bar end links connecting the bar to the lower strut body on each side

Parts involved: Ball joint.

Ask the seller

  • “Has there been any knocking or clunking from the front over bumps?”
  • “Have the front anti-roll bar end links been replaced?”
  • “Has the car had any recent WOF failures related to front suspension?”
Fluid leaks1

01FA20 Rear Main Oil Seal Leak

Inspect the bellhousing and clutch area for oil contamination.petrol2012–2021Fluid Leaks
OccasionalFluid Leaks $400–$1,200 to fix

Does not apply

FA20 rear main oil seal weeps oil onto the bellhousing and clutch, causing clutch slip and contamination on manual transmission examples.

Symptoms to notice

  • Oil contamination on the clutch and bellhousing from the rear main seal
  • Clutch judder or slip caused by oil contamination of the clutch disc

What to check

Inspect the bellhousing and clutch area for oil contamination. Clutch slip or judder on a manual 86 with no other cause warrants rear main seal inspection.

Where to look: FA20 rear main oil seal behind the flywheel

Parts involved: Clutch.

Ask the seller

  • “Has the fa20 rear main oil seal been inspected or repaired?”

Toyota GR86 faults in detail

Narrowed to the Toyota GR86 · 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.

FA24D GDI Intake Valve Carbon BuildupMajor · Engine

What these repairs cost on other cars

Some of the Toyota GR86’s documented faults are repairs other models share. Each page lists the documented NZ cost for every model it affects.

Other Toyota models

Toyota Prado64 documented faultsToyota RAV463 documented faultsToyota Hilux59 documented faultsToyota Mark II22 documented faultsToyota Fortuner21 documented faultsToyota Aqua20 documented faults

Toyota GR86 buyer questions

Is the Toyota GR86 reliable?

Like any used car, it depends on the specific example and its service history. Across the 22 documented faults for the Toyota GR86, the recurring problem areas are engine, transmission, and suspension. A Toyota GR86 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 Toyota GR86?

We've catalogued 22 known faults for the Toyota GR86, covering engine, transmission, and suspension. All 22 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 Toyota GR86?

Most single repairs on the Toyota GR86 fall between $550–$1,200 at NZ independent-workshop rates. Some of the 22 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 Toyota GR86?

Yes. A Toyota GR86 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.