Toyota2004–2019 Major issues documented

Toyota Mark X X130: common faults & what to check

The X130 is the Toyota Mark X built 2009–2019. It was sold here with the 2.5 V6 petrol and 3.5 V6 petrol. Of the 23 faults documented for the Mark X, 20 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

Major

Most serious

$400–$1,500

Typical repair

Systems covered

You're looking at the X130

2 engine variants are documented for this generation. Pick yours to narrow further, or keep reading for the generation as a whole.

2009–2019X130 Selected2009–2019X1302.5 V6 petrolPetrolDocumented issues20 knownSee faults & what to checkPhoto: Mytho88 via Wikimedia Commons, CC BY-SA 3.0.

2009–2019X130 Selected2009–2019X1303.5 V6 petrolPetrolDocumented issues16 knownSee faults & what to checkPhoto: Mytho88 via Wikimedia Commons, CC BY-SA 3.0.

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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?

2.5 V6 petrol· 2.5 litre petrol 3.5 V6 petrol· 3.5 litre petrol

A 2010 Toyota Mark X is the X130 generation (2009 to 2019).

Start your free check on this Toyota Mark X

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Toyota Mark X X130Engine not picked yet

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Can't confirm for this car

Toyota Mark X · 2010

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

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matched on year only

What to look out for

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

Costly issue
Healthy bushes show uniform, uncracked rubber with no voids or delamination.
See why
Rear Subframe Mounting Bush Deterioration
The rear subframe on both GRX120 and GRX130 is isolated from the body by four large rubber mounting bushes. On vehicles above 10–15 years of age, which describes the majority of NZ/AU market Mark X imports, the natural rubber compound hardens and cracks, reducing its vibration-damping effectiveness and allowing micro-movement between the subframe and body. This produces characteristic rear-end clunking and vague handling. JDM-sourced vehicles are typically 8–12 years old at import, so the bushes are already well-aged on arrival.
What you would notice
- Dull thudding or clunking from the rear of the car over speed humps and sharp road imperfections
- Rear-end feels loose or vague during cornering with a sense of lag between steering input and rear grip
- Visible rubber cracking, compression set, or delamination on the subframe bush when inspected from below
- Rear tyre wear becomes uneven as subframe alignment shifts under lateral load
Typically $500–$1,200 to put right.
Costly issue
Raise and support the front of the vehicle.
See why
Front Lower Control Arm Ball Joint Wear
The front suspension lower control arms on both GRX120 and GRX130 use pressed-in ball joints. The rubber boot on the lower ball joint is exposed to road debris and deteriorates with age, allowing water and grit ingress that accelerates wear of the ball stud and socket. Worn joints introduce lateral play in the wheel hub, causing handling imprecision and tyre wear. On Japanese domestic market imports the ball joints are frequently near or at end of life by the time vehicles arrive in NZ/AU at 8–12 years of age.
What you would notice
- Clunking or knocking from the front suspension when driving over speed bumps, potholes, or rough road surfaces
- Vague or imprecise steering feel and mild wandering on the motorway
- Uneven or accelerated tyre wear on the inner or outer edge of the front tyres
- Lateral play detectable when the front wheel is grasped at 9 and 3 o'clock positions and rocked with the wheel raised
Typically $450–$950 to put right.
Costly issue
Check differential oil level.
See why
Rear Differential Output Shaft Oil Seal Leak
The Mark X rear-wheel-drive layout places the rear differential under regular load, and the output shaft oil seals degrade with age and mileage. Seal failure leads to differential oil loss which, if undetected, causes overheating and differential damage. This is a frequently spotted defect during NZ pre-purchase inspections on GRX120 and GRX130 imports, particularly on higher-mileage or harder-driven examples.
What you would notice
- Oil patches or drips under the rear of the vehicle
- Oil residue and grime on the rear differential housing
- Differential whine under load if oil level has dropped
Typically $400–$900 to put right.
Costly issue
On the test drive, note any hum that changes when load transfers laterally.
See why
Front Wheel Hub Bearing Failure at High Mileage
Front hub bearing assemblies on GRX120 and GRX130 Mark X models wear progressively, typically presenting above 100,000–120,000 km. The sealed units are not rebuildable and must be replaced as complete assemblies. Failure manifests as a speed-proportional hum that changes in intensity with lateral weight transfer, helping distinguish it from tyre noise.
What you would notice
- Humming or rumbling from the front that increases with speed
- Noise changes in intensity when weaving or changing lanes
- Vibration felt through the steering wheel at highway speed
- Wheel wobble or play when rocked at the 9 and 3 o'clock positions
Typically $350–$700 to put right.
Costly issue
Check for pulling under braking.
See why
Brake Caliper Guide Pin Seizure
Front and rear brake caliper guide pins seize from corrosion causing uneven pad wear.
What you would notice
- Vehicle pulling to one side under braking
- One disc hotter than the other after moderate use
Typically $200–$600 to put right.
Costly issue
Check for EPS warning light during startup and test drive.
See why
Electric Power Steering Rack Motor Failure
The GRX130 Mark X replaced hydraulic power steering with a column-assist or rack-integrated electric power steering (EPS) system. The EPS motor and its associated control module are susceptible to failure from heat cycling, moisture ingress, and age on high-mileage examples. Failure presents as a sudden loss of power steering assistance, often accompanied by the EPS warning light illuminating on the instrument cluster. The steering remains functional but requires substantially more effort, particularly at low speeds and during parking manoeuvres. Some failures are intermittent, with the EPS warning appearing and clearing across drive cycles, which can complicate diagnosis. The EPS ECU may log fault codes pointing to motor overcurrent, position sensor faults, or torque sensor errors. Replacement requires a new or remanufactured EPS rack assembly or motor unit, both of which are expensive. Aftermarket remanufactured units are available from Japanese suppliers but quality varies.
What you would notice
- EPS warning light illuminated on instrument cluster
- Sudden increase in steering effort, especially at low speed
- Intermittent loss of power assistance that may self-clear
- Steering feels heavier on one side of centre
- Groaning or whirring noise from steering rack when turning
Typically $1,500–$4,500 to put right.

See all 20 issues for this oneDocumented for the exact year and engine you picked.

Electrical2

01Electric Power Steering Rack Motor Failure

Check for EPS warning light during startup and test drive.petrol2009–2019Electrical$1,500–$4,500

OccasionalElectrical $1,500–$4,500 to fix

The GRX130 Mark X replaced hydraulic power steering with a column-assist or rack-integrated electric power steering (EPS) system. The EPS motor and its associated control module are susceptible to failure from heat cycling, moisture ingress, and age on high-mileage examples. Failure presents as a sudden loss of power steering assistance, often accompanied by the EPS warning light illuminating on the instrument cluster. The steering remains functional but requires substantially more effort, particularly at low speeds and during parking manoeuvres. Some failures are intermittent, with the EPS warning appearing and clearing across drive cycles, which can complicate diagnosis. The EPS ECU may log fault codes pointing to motor overcurrent, position sensor faults, or torque sensor errors. Replacement requires a new or remanufactured EPS rack assembly or motor unit, both of which are expensive. Aftermarket remanufactured units are available from Japanese suppliers but quality varies.

Symptoms to notice

EPS warning light illuminated on instrument cluster
Sudden increase in steering effort, especially at low speed
Intermittent loss of power assistance that may self-clear
Steering feels heavier on one side of centre
Groaning or whirring noise from steering rack when turning

What to check

Check for EPS warning light during startup and test drive.
Turn the wheel lock-to-lock at low speed in a car park to feel for inconsistent assist.
Scan the EPS ECU for fault codes.
Inspect steering rack wiring harness connectors for corrosion, particularly under the vehicle.

Where to look: Electric power steering rack motor and ECU module, located on or adjacent to the steering rack under the vehicle

Parts involved: Steering rack.

Ask the seller

“Has the EPS warning light ever appeared on the dashboard?”
“Does the steering feel heavy or inconsistent at low speeds?”
“Has any steering or EPS work been carried out?”
“Has the vehicle been scanned for EPS fault codes recently?”

02Ignition coil failure causing misfire and stalling

petrol2004–2019Electrical$250–$1,200Read the full fault: symptoms, where to look, what to ask the seller

Body, brakes, suspension & interior8

03Underbody corrosion on imports from Japanese snow regions

2004–2019Body & Rust$400–$3,000

OccasionalBody & Rust $400–$3,000 to fix

Mark X sedans were popular in northern Japan, where roads are heavily salted, and Japanese-market cars get less underbody rustproofing than export models because most of Japan does not salt. Imports from snow prefectures can arrive with corrosion on the rear subframe, suspension arms, brake and fuel lines, exhaust and floor seams - and Japanese auction grades barely reflect underbody rust, so a 'Grade 4' car can still be crusty underneath. NZ entry certification will flag structural rust, but surface rust on arms and lines passes and then blooms in NZ coastal air. Repair ranges from a wire-brush and underseal to replacing corroded subframe components and lines.

Symptoms to notice

Flaky orange rust on rear subframe, suspension arms or exhaust visible from behind the car
Crusty white/brown corrosion along brake and fuel lines under the sills
Rust bubbling at rear wheel arch lips or door bottoms
Damp or musty boot floor

What to check

Get the car on a hoist or take a torch and phone camera underneath: check the rear subframe, control arms, brake/fuel lines along the sills, exhaust hangers and floor seams for flaking rust rather than light surface discolouration.
Lift the boot carpet and check the spare wheel well for water and rust.
Ask to see the Japanese auction sheet and where in Japan the car came from, plus the NZ compliance paperwork - rust noted at compliance should have a repair record.

Where to look: Rear subframe, suspension arms, brake/fuel lines under the sills, exhaust system, boot floor and rear arches

Parts involved: Body corrosion.

Ask the seller

“Can I see the Japanese auction sheet, and which prefecture did the car come from?”
“Was any rust noted or repaired at NZ compliance?”
“Has the underbody ever been rustproofed in NZ?”

04Rear Subframe Mounting Bush Deterioration

Healthy bushes show uniform, uncracked rubber with no voids or delamination.2004–2019Suspension$500–$1,200

CommonSuspension $500–$1,200 to fix

The rear subframe on both GRX120 and GRX130 is isolated from the body by four large rubber mounting bushes. On vehicles above 10–15 years of age, which describes the majority of NZ/AU market Mark X imports, the natural rubber compound hardens and cracks, reducing its vibration-damping effectiveness and allowing micro-movement between the subframe and body. This produces characteristic rear-end clunking and vague handling. JDM-sourced vehicles are typically 8–12 years old at import, so the bushes are already well-aged on arrival.

Symptoms to notice

Dull thudding or clunking from the rear of the car over speed humps and sharp road imperfections
Rear-end feels loose or vague during cornering with a sense of lag between steering input and rear grip
Visible rubber cracking, compression set, or delamination on the subframe bush when inspected from below
Rear tyre wear becomes uneven as subframe alignment shifts under lateral load

What to check

Healthy bushes show uniform, uncracked rubber with no voids or delamination. Measure rear wheel alignment; subframe bush failure often causes toe change outside specification. If a workshop inspection is possible: Raise the rear of the vehicle and inspect all four subframe mounting bushes with a torch from below. Use a pry bar to gently apply fore-aft and lateral load to the subframe — detectable movement relative to the body indicates failed bushes.

Where to look: Four rear subframe-to-body mounting points, two front and two rear of the subframe beneath the boot floor

Ask the seller

“Have the rear subframe bushes been inspected or replaced, particularly if the vehicle is a JDM import?”
“Does the rear end produce any clunking noises over speed bumps or feel vague during cornering?”

05Front Lower Control Arm Ball Joint Wear

Raise and support the front of the vehicle.2004–2019Suspension$450–$950

CommonSuspension $450–$950 to fix

The front suspension lower control arms on both GRX120 and GRX130 use pressed-in ball joints. The rubber boot on the lower ball joint is exposed to road debris and deteriorates with age, allowing water and grit ingress that accelerates wear of the ball stud and socket. Worn joints introduce lateral play in the wheel hub, causing handling imprecision and tyre wear. On Japanese domestic market imports the ball joints are frequently near or at end of life by the time vehicles arrive in NZ/AU at 8–12 years of age.

Symptoms to notice

Clunking or knocking from the front suspension when driving over speed bumps, potholes, or rough road surfaces
Vague or imprecise steering feel and mild wandering on the motorway
Uneven or accelerated tyre wear on the inner or outer edge of the front tyres
Lateral play detectable when the front wheel is grasped at 9 and 3 o'clock positions and rocked with the wheel raised

What to check

Raise and support the front of the vehicle. Grasp each front wheel at 9 and 3 o'clock and attempt to rock it sideways — any detectable play indicates ball joint wear. Also grasp at 12 and 6 o'clock to check for wheel bearing play (distinguish from ball joint). Inspect the ball joint boot for cracking or grease leakage. If a workshop inspection is possible: A workshop inspection with a dial gauge on the hub can quantify play against Toyota's service limit.

Where to look: Front lower control arms, one ball joint per side at the outboard end of the arm connecting to the steering knuckle

Parts involved: Ball joint.

Ask the seller

“Has the vehicle had a recent WOF or mechanical inspection, and were the front ball joints noted as serviceable?”
“Does the front suspension make any clunking noises over rough roads or when turning on full lock?”

06Front Wheel Hub Bearing Failure at High Mileage

On the test drive, note any hum that changes when load transfers laterally.petrol2004–2019Suspension$350–$700

CommonSuspension $350–$700 to fix

Front hub bearing assemblies on GRX120 and GRX130 Mark X models wear progressively, typically presenting above 100,000–120,000 km. The sealed units are not rebuildable and must be replaced as complete assemblies. Failure manifests as a speed-proportional hum that changes in intensity with lateral weight transfer, helping distinguish it from tyre noise.

Symptoms to notice

Humming or rumbling from the front that increases with speed
Noise changes in intensity when weaving or changing lanes
Vibration felt through the steering wheel at highway speed
Wheel wobble or play when rocked at the 9 and 3 o'clock positions

What to check

On the test drive, note any hum that changes when load transfers laterally. Cupped or uneven rear tyre wear can also point to bearing-related alignment drift. If a workshop inspection is possible: On a hoist, rock each front wheel firmly for play and spin by hand listening for roughness.

Where to look: Front wheel hub assemblies behind brake rotors, one per side

Parts involved: Wheel bearing.

Ask the seller

“Have the front wheel bearings been inspected or replaced?”
“Any rumbling or vibration at highway speed?”
“What is the total odometer mileage on the vehicle?”

07Brake Caliper Guide Pin Seizure

Check for pulling under braking.2004–2019Brakes$200–$600

CommonBrakes $200–$600 to fix

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

Check for pulling under braking.
Feel for uneven wheel heat.
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?”

08Electric Power Steering Rack Rattle and Clunk

With the vehicle stationary on a rough surface or during a slow-speed turn, listen and feel for clunks through the steering wheel.2009–2019Suspension$500–$2,200

OccasionalSuspension $500–$2,200 to fix

The GRX130 Mark X (2009–2019) is equipped with a column-mounted electric power steering (EPS) system. The steering rack uses an internal ball-nut mechanism driven by the electric motor. As the rack ages, the internal pre-load on the ball-nut mechanism decreases due to wear and bush deterioration, causing a clunk or rattle when the steering wheel is moved at low speeds, particularly on rough surfaces or during parking manoeuvres. The EPS column reduction gear can also develop lash.

Symptoms to notice

Clunking or rattling noise from the steering rack area when driving slowly over speed humps or rough surfaces
Knocking felt through the steering wheel when the car hits a bump with the wheel turned
Occasional steering pull or self-centering resistance inconsistency pointing to internal rack wear
Noise is absent on smooth roads at motorway speeds but returns on rough suburban surfaces

What to check

With the vehicle stationary on a rough surface or during a slow-speed turn, listen and feel for clunks through the steering wheel. Have an assistant turn the steering wheel lock-to-lock while a second person feels the rack body for movement or listens at the rack housing for internal knocking. Check all steering rack mounting bush condition by inspecting for cracking or compression set. Verify EPS column coupler and intermediate shaft joints are tight.

Where to look: Steering rack mounted behind the front subframe; EPS motor and reduction gear on the steering column below the dashboard

Parts involved: Steering rack.

Ask the seller

“Does the steering wheel transmit any clunking or knocking when driving over rough roads or speed bumps?”
“Has any steering noise or handling complaint been reported or repaired?”

09Rear Multi-Link Bush Collapse

Inspect rear suspension arm bushes for cracking.2004–2019Suspension$400–$1,200

CommonSuspension $400–$1,200 to fix

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

Symptoms to notice

Knocking from rear suspension over rough surfaces
Imprecise rear handling feel

What to check

Inspect rear suspension arm bushes for cracking.
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?”

10Rear suspension arm and differential mount bush wear (clunks from the back)

Crouch at each rear wheel and look at the visible arm bushes for cracked, perished rubber or rubber squeezed out of the housings.2004–2019Suspension$400–$1,200

CommonSuspension $400–$1,200 to fix

The Mark X's rear-drive multilink rear end carries its cornering loads through rubber bushes in the upper/lower control arms, trailing arms and the differential mounts, and by 120,000+ km these perish and go sloppy. The tell-tales are clunks over bumps, a thump from the rear when getting on and off the throttle (diff mount), vague rear-end feel and inner-edge rear tyre wear. It is a big enough pattern that SuperPro and Hardrace both sell dedicated Mark X rear bush kits. Not dangerous at first, but a full rear bush refresh at NZ labour rates adds up, so use it to negotiate.

Symptoms to notice

Clunk or knock from the rear over speed bumps and potholes
Thump from the back when lifting off or applying throttle
Rear end feels loose or wanders on coarse chip seal
Uneven or inner-edge wear on the rear tyres

What to check

Crouch at each rear wheel and look at the visible arm bushes for cracked, perished rubber or rubber squeezed out of the housings. Run your hand over the rear tyres feeling for feathering or inner-edge wear. On the test drive find some rough seal or judder bars and listen with the stereo off for rear clunks, and do a firm on-off throttle transition in a straight line feeling for a delayed thump from the diff area.

Where to look: Rear suspension arms and differential mounting bushes, under the rear of the car

Parts involved: Differential.

Ask the seller

“Have any rear suspension bushes or the diff mounts been replaced?”
“When was the last wheel alignment, and can I see the printout?”
“Does it clunk over bumps?”

Fluid leaks1

11Rear Differential Output Shaft Oil Seal Leak

Check differential oil level.petrol2004–2019Fluid Leaks$400–$900

CommonFluid Leaks $400–$900 to fix

The Mark X rear-wheel-drive layout places the rear differential under regular load, and the output shaft oil seals degrade with age and mileage. Seal failure leads to differential oil loss which, if undetected, causes overheating and differential damage. This is a frequently spotted defect during NZ pre-purchase inspections on GRX120 and GRX130 imports, particularly on higher-mileage or harder-driven examples.

Symptoms to notice

Oil patches or drips under the rear of the vehicle
Oil residue and grime on the rear differential housing
Differential whine under load if oil level has dropped

What to check

Check differential oil level.
Look for accumulated grime mixed with oil on the diff casing.
If a workshop inspection is possible: On a hoist, inspect the rear differential housing and both output shaft seal areas for oil seepage or active drips.

Where to look: Rear differential, where the left and right output shaft halfshafts exit the diff housing

Parts involved: Differential.

Ask the seller

“Has the rear differential ever been serviced or had seals replaced?”
“Any oil patches visible where the car is usually parked?”
“Is the differential oil level correct?”

Depends on the exact engine — 9 moreDocumented for a specific engine we could not confirm from what you picked. Check the engine code on the car.

Engine, transmission & cooling9

01D-4 high-pressure fuel injector failure (4GR-FSE / 3GR-FSE / 2GR-FSE)

petrol2004–2019EngineCan't confirm for this car$1,200–$3,000

OccasionalEngine $1,200–$3,000 to fix

Can't confirm for this car

The direct-injection injectors on the Mark X V6s clog and fail with age and dirty fuel, causing persistent single-cylinder misfires, hard cold starts and rough running that a carbon clean alone will not cure. Owner guides for the model note injector failures are common at higher mileage, and because the D-4 injectors are matched high-pressure units, workshops usually recommend replacing them as a set of six rather than one at a time. Genuine injectors are expensive in NZ, which is why partial fixes and recurring misfires are common on cheap imports. Diagnosis needs a proper injector balance test to separate this from carbon buildup or coils.

Symptoms to notice

Persistent misfire in one cylinder even after new spark plugs and coils
Long cranking or hard starting when cold
Fuel smell at idle
Uneven, lumpy idle that never fully smooths out

What to check

Have any check-engine light scanned before purchase - repeated P0301-P0306 codes on specific cylinders after plugs/coils were done points at injectors.
Listen at idle for an uneven beat and smell for raw fuel around the engine bay.
Ask what work has already been thrown at any misfire - a seller who has replaced plugs and coils but still has a stumble is likely selling an injector bill.

Where to look: Fuel injectors seated under the intake manifold, one per cylinder in the V6

Parts involved: Fuel injector.

Ask the seller

“Have any fuel injectors been replaced, and were they done as a set?”
“Has the car ever had recurring misfire codes?”
“Can I get a pre-purchase diagnostic scan?”

024GR-FSE Timing Chain Tensioner Cold-Start Rattle

Cold-start the engine and listen immediately for chain rattle from the timing cover.petrol2004–2019EngineCan't confirm for this car$1,200–$2,800

CommonEngine $1,200–$2,800 to fix

Can't confirm for this car

The 4GR-FSE 2.5L V6 fitted to both GX130 and GRX130 generation Mark X uses a hydraulic timing chain tensioner that relies on oil pressure to maintain chain tension. On cold starts, particularly in cooler climates, oil drains from the tensioner during extended park periods and the chain momentarily slackens before oil pressure builds. This produces a distinct metallic rattling or clattering noise from the front of the engine for between two and fifteen seconds immediately after start-up. The noise disappears once oil pressure is established. On high-mileage examples the tensioner shoe and ratchet mechanism wear, allowing greater slack and longer rattle duration. Ignored over time, progressive chain wear leads to timing deviation, rough running, cam sensor codes, and in severe cases chain jump causing valve-to-piston contact. Oil quality and change intervals directly influence tensioner longevity.

Symptoms to notice

Metallic rattle or clatter on cold start, clearing within seconds to 15 seconds
Noise from front-centre of engine bay (timing cover area)
Rattle persisting longer than usual as mileage increases
Cam timing or cam position sensor fault codes in cold conditions
Rough running briefly after cold start before settling

What to check

Cold-start the engine and listen immediately for chain rattle from the timing cover. Duration of rattle correlates with tensioner wear. Pull oil dipstick to check oil level and condition — low or black oil accelerates tensioner wear. Ask for oil service history.

Where to look: Timing chain and tensioner at the front of the 4GR-FSE engine block, behind the timing cover

Parts involved: Timing chain.

Ask the seller

“Does the engine make any rattling noise on cold start?”
“What oil specification and change interval has been used?”
“Has the timing chain or tensioner ever been replaced?”
“Are there any stored cam timing or cam sensor fault codes?”

034GR-FSE VVT-i Actuator Cold-Start Rattle

Cold-start the engine from fully cold (overnight soak).petrol2004 onwardEngineCan't confirm for this car$900–$2,800Read the full fault: symptoms, where to look, what to ask the seller

044GR-FSE 2.5 V6 intake valve carbon build-up (direct injection)

The 2.5 V6 in the Mark X 250G injects fuel straight into the cylinder, so no petrol ever washes over the back of the intake valves.petrol2004–2019EngineCan't confirm for this car$600–$1,800Read the full fault: symptoms, where to look, what to ask the seller

05VVT-i Actuator Oil Screen Blockage (P0012)

Scan ECU for P0012 or related cam timing codes before purchase.petrol2004–2019EngineCan't confirm for this car$400–$1,500

OccasionalEngine $400–$1,500 to fix

Can't confirm for this car

The 4GR-FSE engine uses Toyota's VVT-i (Variable Valve Timing with intelligence) system to advance and retard the intake camshaft timing via hydraulically controlled cam phasers (VVT-i actuators). A small mesh oil filter screen sits upstream of each actuator to protect the precision orifices from sludge. On vehicles with infrequent oil changes or prolonged use of incorrect-viscosity oil, varnish and particulate contamination block this screen, starving the actuator of the oil pressure it needs to hold or advance cam timing. The ECU detects that the actual cam position lags behind the commanded position and stores fault code P0012 (intake camshaft position actuator timing over-retarded). Symptoms include a check engine light, rough idle, reduced low-speed torque, and in some cases a rattle from the cam phaser. Cleaning or replacing the VVT-i actuator and performing a full engine flush and oil change with Toyota-specified 0W-20 or 5W-30 typically resolves the fault. Sludge inside the actuator beyond the screen requires full replacement.

Symptoms to notice

Check engine light with stored code P0012 (intake cam timing over-retarded)
Rough or erratic idle, particularly when cold
Reduced torque and sluggish response at low engine speeds
Intermittent cam phaser rattle from valve cover area
Engine runs better after extended idling when oil is fully warm

What to check

Scan ECU for P0012 or related cam timing codes before purchase.
Ask whether the vehicle has a documented oil change history using the correct viscosity.
Remove the oil filler cap and inspect for sludge or mayonnaise-like deposits as an indicator of poor maintenance.

Where to look: VVT-i actuator mounted on the intake camshaft at the front of each cylinder bank, behind the cam cover

Ask the seller

“Has a check engine light appeared, specifically a P0012 cam timing code?”
“What oil viscosity and brand has been used, and how often was it changed?”
“Has the VVT-i actuator ever been cleaned or replaced?”
“Is there any history of sludge or engine flush being required?”

06Air Conditioning Compressor Clutch Bearing Failure

With the engine idling, switch the A/C on and off while listening for the noise to appear and disappear.petrol2004–2019EngineCan't confirm for this car$400–$1,400

CommonEngine $400–$1,400 to fix

Can't confirm for this car

The belt-driven A/C compressor on both the 2GR-FSE and 4GR-FSE uses an electromagnetic clutch to engage and disengage the compressor scroll. The clutch pulley contains a sealed ball bearing that continues to spin whenever the engine is running, regardless of whether the A/C is active. This bearing is exposed to engine heat and ages independently of the compressor itself. Bearing failure is common on higher-mileage or older Mark X vehicles and is audible as a distinct squeal or grinding noise that tracks with engine RPM and disappears when the A/C is switched off.

Symptoms to notice

High-pitched squealing or grinding noise from the engine bay that disappears immediately when the A/C or climate control is turned off
Noise pitch rises and falls with engine RPM, confirming it is belt-driven rather than a valve-train issue
Intermittent A/C compressor non-engagement as the clutch bearing seizes and the electromagnetic plate fails to couple
Visible discolouration or scoring on the compressor clutch face when inspected with the belt removed

What to check

With the engine idling, switch the A/C on and off while listening for the noise to appear and disappear. Visually inspect the clutch air gap between the pulley and drive plate — excessive gap reduces engagement force. If a workshop inspection is possible: Use a mechanic's stethoscope on the compressor clutch pulley body to confirm the bearing as the noise source. Remove the drive belt and spin the compressor pulley by hand to feel for roughness or binding in the bearing.

Where to look: A/C compressor front clutch pulley, mounted on the driver-side (RHD: passenger-side) of the engine below the alternator

Parts involved: Clutch.

Ask the seller

“Does the air conditioning work correctly, and does any noise change when you turn the A/C on or off?”
“Has the A/C compressor or clutch been inspected or replaced at any point?”

07AA80E / U660E Automatic Transmission Solenoid and Valve Body Wear

Check ATF on dipstick for dark colour or burnt smell — either indicates long-term neglect.petrol2004–2019TransmissionCan't confirm for this car$500–$3,500

OccasionalTransmission $500–$3,500 to fix

Can't confirm for this car

The 6-speed automatics fitted across GRX120 and GRX130 Mark X generations develop solenoid wear and valve body contamination above 120,000 km, resulting in harsh or delayed gear changes, inter-gear slip, and transmission fault codes. ATF that has never been replaced is a near-universal finding on imported examples and is the primary accelerant of solenoid and bore wear.

Symptoms to notice

Harsh or jerky gear shifts at low speed
Transmission hunting between gears in traffic
Delayed engagement when selecting drive from park
Slipping under acceleration with no mechanical noise
Transmission warning lamp or P07XX fault codes

What to check

Check ATF on dipstick for dark colour or burnt smell — either indicates long-term neglect.
Test drive at various speeds noting shift smoothness.
If a workshop inspection is possible: Connect OBD scanner to check for stored transmission fault codes before purchase.

Where to look: Automatic gearbox housed under the centre floor tunnel

Parts involved: Mechatronic / valve body.

Ask the seller

“When was the automatic transmission fluid last changed?”
“Any harsh shifting, slip, or hesitation between gears?”
“Has the transmission been serviced or repaired?”

08A960E / AB60E Automatic Transmission Torque Converter Shudder

Road-test at 50–70 km/h in light throttle lock-up condition and note any shudder.petrol2004–2019TransmissionCan't confirm for this car$250–$2,600Read the full fault: symptoms, where to look, what to ask the seller

096-speed automatic shift flare from neglected fluid changes

Test drive from cold and drive gently through all six gears watching the tacho - each upshift should be a clean drop in revs with no surge in between.petrol2004–2019TransmissionCan't confirm for this car$400–$4,000

OccasionalTransmission $400–$4,000 to fix

Can't confirm for this car

Both Mark X generations run Aisin 6-speed automatics that are fundamentally robust but sensitive to old fluid: Toyota called the fluid 'lifetime' so many JDM cars arrive in NZ with the original fill. Buyer guides for the model note the box develops shift flare - revs jumping between gears - and harsh or delayed shifts when the fluid is never changed, typically past 100,000 km. Caught early, a proper fluid exchange restores it; left slipping, it cooks the clutch packs and needs a valve body or full rebuild at NZ transmission-shop rates. Service history is the whole game here.

Symptoms to notice

Revs flare or 'slip' between 2nd-3rd or 3rd-4th gear changes
Harsh clunk on light-throttle downshifts
Delayed engagement shifting from Park to Drive or Reverse
Shudder under light acceleration at open-road speeds

What to check

Test drive from cold and drive gently through all six gears watching the tacho - each upshift should be a clean drop in revs with no surge in between.
Try a gentle stop-start crawl (car park speeds) feeling for clunks and delays.
Ask for proof the transmission fluid has been changed in NZ with the correct Toyota WS fluid; with no proof, price in an immediate service and treat any flare as a rebuild-sized risk.

Where to look: Automatic transmission behind the engine, driving the rear wheels

Parts involved: Clutch, Mechatronic / valve body.

Ask the seller

“Has the automatic transmission fluid ever been changed, and with Toyota WS fluid?”
“Do the gears ever slip or flare between changes?”
“Has the transmission ever been repaired or had the valve body out?”

Other Toyota Mark X engines and years3 documented issues that do not apply to the one you picked.

Engine, transmission & cooling1

014GR-FSE Valve Stem Seal Wear & Oil Consumption

Cold-start the engine after it has been parked overnight and watch the exhaust for blue or grey smoke during the first 30 seconds.petrol2004–2009EngineDoes not apply$1,500–$3,200Read the full fault: symptoms, where to look, what to ask the seller

Electrical1

01Electric power steering ECU and sensor faults (X120)

2004–2009ElectricalDoes not apply$400–$1,500

OccasionalElectrical $400–$1,500 to fix

Does not apply

The first-generation Mark X uses electric power steering, and owners report the P/S warning light coming on with codes like C1515/C1525 (torque sensor zero-point and ECU faults), sometimes losing steering assist entirely. The steering suddenly goes heavy - the car remains steerable but it is alarming at low speed. Fixes range from a battery/charging check (the system is voltage-sensitive) and a torque sensor recalibration, up to a replacement PS ECU, which in NZ usually means a used JDM unit plus calibration since new parts are dealer-only and dear. Ageing dash cluster and HVAC control glitches are also reported on early cars.

Symptoms to notice

P/S warning light on the dash
Steering suddenly heavy, especially at parking speeds
Assist cutting in and out intermittently
Dash cluster or climate control display glitches

What to check

At the start of the test drive, turn the wheel lock-to-lock at walking pace - assist should be smooth, light and consistent with no dead spots or sudden heaviness.
Check no P/S light appears on start-up or during the drive, and confirm every dash and climate display segment works.
Ask for a pre-purchase scan of the power steering module - stored C1515/C1525 codes reveal a problem even if the seller cleared the light.

Where to look: Power steering ECU (under/near the battery area), steering column torque sensor, instrument cluster

Parts involved: Steering rack.

Ask the seller

“Has the P/S warning light ever come on?”
“Has the power steering ECU or column ever been replaced or recalibrated?”
“Has the battery and charging system been checked recently?”

Body, brakes, suspension & interior1

01Front Lower Control Arm Rear Bush Failure

Inspect the rubber for cracking, splitting, or compression set.petrol2004–2009SuspensionDoes not apply$450–$1,400

CommonSuspension $450–$1,400 to fix

Does not apply

The GRX120 Mark X front suspension uses a double-wishbone layout with two separate rubber bushes per lower control arm. The rear (trailing) bush is subject to high torsional and fore-aft loads and deteriorates significantly faster than the front bush. Failure causes the front wheels to adopt a wandering or darting steering character, increased tyre wear on the inner shoulder, and a knocking noise over braking bumps. The condition is common on NZ-import GRX120 examples that have covered real-world distances over 100,000 km, and the rubber compound used in the original bush degrades in the wet climates typical of Japan export storage.

Symptoms to notice

Steering wander or darting feeling over road imperfections
Clunk or knock from front suspension when braking on rough surfaces
Uneven or accelerated tyre wear on inner front edge
Loose or vague steering feel at motorway speed
Wheel alignment impossible to hold within spec

What to check

Inspect the rubber for cracking, splitting, or compression set. Check for recent wheel alignment records and any noted alignment instability. Visually check the bush from below with a torch for visible deterioration. If a workshop inspection is possible: With the vehicle on a hoist, grasp the lower control arm and apply firm fore-aft force — any visible movement or rubber tearing at the rear bush pivot indicates failure.

Where to look: Front lower suspension control arm — rear (inboard trailing) bush pivot, both left and right sides

Ask the seller

“Has the front suspension been inspected or any bushes replaced recently?”
“Has the wheel alignment been done and did it hold correctly?”
“Is there any knocking from the front suspension over bumps or braking?”
“Has the vehicle had any uneven or rapid tyre wear on the front axle?”

Toyota Mark X faults in detail

Narrowed to the Toyota Mark X · 2010. 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.

4GR-FSE 2.5 V6 intake valve carbon build-up (direct injection)Major · Engine 4GR-FSE VVT-i Actuator Cold-Start RattleMajor · Engine A960E / AB60E Automatic Transmission Torque Converter ShudderMajor · Transmission Ignition coil failure causing misfire and stallingMajor · Electrical

What these repairs cost on other cars

Some of the Toyota Mark X’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 Toyota models

Toyota Prado64 documented faults Toyota RAV463 documented faults Toyota Hilux59 documented faults Toyota Supra23 documented faults Toyota GR8622 documented faults Toyota Mark II22 documented faults

Toyota Mark X buyer questions

Is the Toyota Mark X reliable?

Like any used car, it depends on the specific example and its service history. Across the 23 documented faults for the Toyota Mark X, the recurring problem areas are electrical, transmission, and engine. A Toyota Mark X 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 Mark X?

We've catalogued 23 known faults for the Toyota Mark X, covering electrical, transmission, and engine. All 23 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 Mark X?

Most single repairs on the Toyota Mark X fall between $400–$1,500 at NZ independent-workshop rates. Some of the 23 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 Mark X?

Yes. A Toyota Mark X 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.