Skip to content
KickTyres
Infiniti1986–2009 Critical issues documented

Infiniti M Y50: common faults & what to check

The Y50 is the Infiniti M built 2004–2010. Of the 14 faults documented for the M, 8 apply to this generation, each with its symptoms, what to inspect and a typical repair cost. Free, no account needed.

Check this exact Infiniti M

  • 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 →

14

Documented faults

Critical

Most serious

$644–$1,800

Typical repair

6

Systems covered

You're looking at the Y50

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 2004 Infiniti M is the Y50 generation (2004 to 2010).

We cannot narrow the engine list to this year, so every engine this model was sold with is offered.

Start your free check on this Infiniti M

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.

Infiniti M Y50Engine not picked yet

Pick the engine above first: the M came with 5, and without it the report has to show all of their faults. Pick the engine

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

Can't confirm for this car

Infiniti M · 2004

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

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

  • Costly issue

    Check all four corner ride heights are even and at correct specification.

    See why

    Adaptive Air Suspension Compressor and Spring Failure (Y50 where fitted)

    Fuga Y50 models equipped with the optional adaptive air suspension suffer compressor motor failure and air spring perishing. Once the compressor fails, the vehicle sits at minimum ride height and ride quality deteriorates severely. Air line fitting corrosion is a secondary failure mode on NZ examples. OEM replacement compressors are expensive and hard to source; conversion to conventional coilover suspension is a common alternative.

    What you would notice

    • Vehicle sitting visibly low at one or more corners
    • Air suspension compressor audible running continuously or rapid-cycling
    • Suspension warning light on the dash
    • Harsh ride on a vehicle that should ride softly

    Typically $1,800–$5,500 to put right.

  • Costly issue

    Compare brake pad thickness on both front calipers — significant difference is a red flag.

    See why

    Front Brake Caliper Piston Seizure

    Both Y50 and Y51 Fuga models develop front brake caliper piston seizure due to corrosion of the piston bore and dust seal deterioration. The large pistons in the multi-pot front calipers bind in NZ conditions where brake fluid is rarely changed. Seized pistons cause uneven brake pad wear, brake pull, and accelerated rotor consumption on the affected side. The fault is common on vehicles where brake fluid has not been changed regularly and caliper slides have not been maintained.

    What you would notice

    • Vehicle pulls to one side under braking
    • Uneven brake pad thickness comparing left to right
    • Excessive heat from one front wheel after normal driving
    • Dragging sensation from front brakes
    • Brake pad worn to metal on one side only

    Typically $600–$1,800 to put right.

  • Costly issue

    Also check at 9 and 3 o'clock for lateral play.

    See why

    Front Lower Control Arm Ball Joint Wear

    The front suspension lower control arm ball joints on both Y50 and Y51 Fuga wear with normal use and are non-serviceable — the ball joint is integral to the pressed-steel lower arm and cannot be replaced independently. A worn joint introduces play that causes handling vagueness, uneven tyre wear, and vibration. In an advanced state, ball joint separation causes sudden and complete loss of front suspension geometry, which is a catastrophic handling failure.

    What you would notice

    • Clunking or knocking from the front suspension over bumps, road imperfections, or during slow-speed turning manoeuvres
    • Uneven or accelerated front tyre wear, steering wander at highway speed, or a pull to one side under braking

    Typically $600–$1,400 to put right.

  • Costly issue

    After a short test drive, cautiously check front wheel temperature — a significant difference between left and right indicates a dragging caliper.

    See why

    Front Brake Caliper Guide Pin Seizure (Y50)

    The front brake calipers on the Y50 Fuga develop guide pin corrosion and seizure, causing one brake pad to remain in partial or full contact with the disc. This produces rapid one-sided pad and disc wear, pulling under braking and sustained heat buildup. NZ road salt and moisture accelerate guide pin corrosion on these vehicles. A common WOF failure or advisory finding on examples that have not had regular brake caliper servicing.

    What you would notice

    • Vehicle pulls to one side under braking
    • One front wheel noticeably hotter than the other after a short drive
    • Uneven brake pad thickness left to right on the front axle
    • Brake drag or smell when not actively braking

    Typically $300–$800 to put right.

  • Costly issue

    Check all bushes and ball joints for play.

    See why

    Rear Wheel Bearing Failure

    The rear wheel bearings on F31 Leopard are semi-floating and are prone to wear at high mileage. The sealed bearing units corrode internally from moisture ingress through degraded hub seals, producing a low growling drone that increases with vehicle speed and changes pitch on cornering. Continued use risks the bearing seizing, which in a semi-floating rear axle can cause the wheel to detach from the housing under torque.

    What you would notice

    • Abnormal tyre wear pattern
    • Fault codes or irregular readings when scanned

    Typically $336–$672 to put right.

See all 8 issues for this oneDocumented for the exact year and engine you picked.
Body, brakes, suspension & interior5

01Adaptive Air Suspension Compressor and Spring Failure (Y50 where fitted)

Check all four corner ride heights are even and at correct specification.petrol2004–2009Suspension
CommonSuspension $1,800–$5,500 to fix

Fuga Y50 models equipped with the optional adaptive air suspension suffer compressor motor failure and air spring perishing. Once the compressor fails, the vehicle sits at minimum ride height and ride quality deteriorates severely. Air line fitting corrosion is a secondary failure mode on NZ examples. OEM replacement compressors are expensive and hard to source; conversion to conventional coilover suspension is a common alternative.

Symptoms to notice

  • Vehicle sitting visibly low at one or more corners
  • Air suspension compressor audible running continuously or rapid-cycling
  • Suspension warning light on the dash
  • Harsh ride on a vehicle that should ride softly

What to check

  1. Check all four corner ride heights are even and at correct specification.
  2. With ignition on, listen for air suspension compressor cycling — it should operate only briefly and infrequently.
  3. Scan for suspension fault codes.
  4. Inspect air line fittings and springs for cracking or corrosion.

Where to look: Air suspension compressor typically in boot or under rear floor, air springs at each corner

Parts involved: Air suspension strut.

Ask the seller

  • “Does the vehicle have air suspension fitted?”
  • “Has the air suspension compressor or springs been replaced?”
  • “Any suspension warning lights, ride height issues or harsh ride complaints?”

02Front Brake Caliper Piston Seizure

Compare brake pad thickness on both front calipers — significant difference is a red flag.petrol2004 onwardBrakes
CommonBrakes $600–$1,800 to fix

Both Y50 and Y51 Fuga models develop front brake caliper piston seizure due to corrosion of the piston bore and dust seal deterioration. The large pistons in the multi-pot front calipers bind in NZ conditions where brake fluid is rarely changed. Seized pistons cause uneven brake pad wear, brake pull, and accelerated rotor consumption on the affected side. The fault is common on vehicles where brake fluid has not been changed regularly and caliper slides have not been maintained.

Symptoms to notice

  • Vehicle pulls to one side under braking
  • Uneven brake pad thickness comparing left to right
  • Excessive heat from one front wheel after normal driving
  • Dragging sensation from front brakes
  • Brake pad worn to metal on one side only

What to check

Compare brake pad thickness on both front calipers — significant difference is a red flag. After a test drive, carefully check whether one front wheel is noticeably hotter than the other. Attempt to push each caliper piston back — check for smooth retraction versus stiff resistance indicating seizure.

Where to look: Front brake calipers, both sides

Parts involved: Brake disc and pads.

Ask the seller

  • “When were the front brake pads last replaced?”
  • “Has the vehicle ever pulled to one side under braking?”
  • “When was the brake fluid last changed?”
  • “Have the calipers been rebuilt or replaced?”

03Front Lower Control Arm Ball Joint Wear

Also check at 9 and 3 o'clock for lateral play.2004 onwardSuspension
CommonSuspension $600–$1,400 to fix

The front suspension lower control arm ball joints on both Y50 and Y51 Fuga wear with normal use and are non-serviceable — the ball joint is integral to the pressed-steel lower arm and cannot be replaced independently. A worn joint introduces play that causes handling vagueness, uneven tyre wear, and vibration. In an advanced state, ball joint separation causes sudden and complete loss of front suspension geometry, which is a catastrophic handling failure.

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 or knocking from the front suspension over bumps, road imperfections, or during slow-speed turning manoeuvres
  • Uneven or accelerated front tyre wear, steering wander at highway speed, or a pull to one side under braking

What to check

  1. Also check at 9 and 3 o'clock for lateral play.
  2. Inspect the ball joint dust boot for cracking, tears, or grease loss.
  3. Compare both sides for symmetry.
  4. Check the lower arm for corrosion at the rear pivot bush as well, as both components wear on high-mileage vehicles.
  5. If a workshop inspection is possible: Raise the vehicle on a hoist and grasp each front wheel at 6 and 12 o'clock positions and attempt to rock it — any vertical play in the ball joint is a failure.

Where to look: Front axle, outboard end of the lower control arm connecting to the steering knuckle, both sides

Parts involved: Ball joint.

Ask the seller

  • “When were the front lower control arms last inspected or replaced, and when was the last wheel alignment done?”
  • “Do you hear any clunking from the front suspension over bumps or when turning at low speed?”

04Front Brake Caliper Guide Pin Seizure (Y50)

After a short test drive, cautiously check front wheel temperature — a significant difference between left and right indicates a dragging caliper.petrol2004–2009Brakes
CommonBrakes $300–$800 to fix

The front brake calipers on the Y50 Fuga develop guide pin corrosion and seizure, causing one brake pad to remain in partial or full contact with the disc. This produces rapid one-sided pad and disc wear, pulling under braking and sustained heat buildup. NZ road salt and moisture accelerate guide pin corrosion on these vehicles. A common WOF failure or advisory finding on examples that have not had regular brake caliper servicing.

Symptoms to notice

  • Vehicle pulls to one side under braking
  • One front wheel noticeably hotter than the other after a short drive
  • Uneven brake pad thickness left to right on the front axle
  • Brake drag or smell when not actively braking

What to check

  1. After a short test drive, cautiously check front wheel temperature — a significant difference between left and right indicates a dragging caliper.
  2. Inspect front brake pads for uneven left-to-right wear.
  3. Check that caliper slides move freely and are lubricated.

Where to look: Front brake calipers, guide and slide pins

Parts involved: Brake disc and pads.

Ask the seller

  • “Does the vehicle pull to one side under braking?”
  • “Have the front brake calipers been serviced or rebuilt recently?”
  • “Any history of uneven pad wear or brake drag?”

05Rear Wheel Bearing Failure

Check all bushes and ball joints for play.Suspension
CommonSuspension $336–$672 to fix

The rear wheel bearings on F31 Leopard are semi-floating and are prone to wear at high mileage. The sealed bearing units corrode internally from moisture ingress through degraded hub seals, producing a low growling drone that increases with vehicle speed and changes pitch on cornering. Continued use risks the bearing seizing, which in a semi-floating rear axle can cause the wheel to detach from the housing under torque.

Symptoms to notice

  • Abnormal tyre wear pattern
  • Fault codes or irregular readings when scanned

What to check

  1. Check all bushes and ball joints for play.
  2. Look for oil leaks on shock absorbers.
  3. Measure tyre wear pattern across the tread.

Parts involved: Wheel bearing.

Depends on the exact engine — 3 moreDocumented for a specific engine we could not confirm from what you picked. Check the engine code on the car.
Engine, transmission & cooling3

01VQ25DE RE5R05A Torque Converter Clutch Shudder

petrol2004–2009Transmission
CommonTransmission $800–$4,500 to fix

Can't confirm for this car

The RE5R05A 5-speed automatic transmission paired with the VQ25DE 2.5L engine is prone to torque converter clutch shudder during light-throttle cruising at 40 to 80 km/h. The torque converter clutch friction material degrades with age and contaminated ATF, causing the lockup clutch to slip intermittently rather than engage cleanly. This produces a characteristic drivetrain vibration that can be mistaken for an engine misfire or driveshaft imbalance.

A cutaway automatic transmission torque converter showing the internal turbine and stator.Example of the part — not this vehicle

A torque converter, sectioned. The lock-up clutch inside is what shudders.

No machine-readable author provided. BerndB~commonswiki assumed (based on copyright claims). · CC BY-SA 3.0 · Wikimedia Commons

Symptoms to notice

  • Rhythmic vibration or shudder felt through the floor and seats at 40 to 80 km/h under steady light-throttle cruise, disappearing under hard acceleration
  • Harsh or delayed 1-2 and 2-3 upshifts, and ATF that appears dark brown or smells burnt on dipstick inspection

What to check

Road test at steady 60 km/h under light throttle and note any drivetrain shudder — applying more throttle should make it disappear if the torque converter clutch is unlocking. Check ATF level and condition; burnt smell or dark colour indicates thermal overload. Scan for transmission fault codes. If a workshop inspection is possible: Drain a small ATF sample into a white container and inspect for fine metallic particles from clutch friction material.

Where to look: Transmission tunnel — RE5R05A unit bolted directly behind the VQ25DE engine

Parts involved: Torque converter, Clutch.

Ask the seller

  • “When was the transmission fluid last changed, and has the correct Nissan Matic-S or Matic-J fluid been used?”
  • “Does the car shudder or vibrate at around 60 km/h under light throttle but smooth out under hard acceleration?”

02VQ35DE/VQ45DE Timing Chain Tensioner Rattle — Cold Start (Y50)

Cold-start the engine and listen for chain rattle from the cam cover and front of engine area.petrol2004–2009EngineRead the full fault: symptoms, where to look, what to ask the seller

03Coolant Leak at Thermostat Housing and Coolant Outlet Flange

Inspect the thermostat housing and coolant outlet pipe on the upper intake side of the engine for crystalline mineral deposits or wet staining.petrol2004 onwardCooling
CommonCooling $350–$900 to fix

Can't confirm for this car

Both the VQ25DE and VQ35DE engines in the Y50 and Y51 Fuga develop coolant leaks at the thermostat housing, the coolant outlet flange, and the plastic coolant crossover fittings. The plastic housing material warps after years of thermal cycling, and the rubber O-ring seals harden and lose compliance. Initial leaks are typically seepage that leaves white crystalline deposits, but failure progresses to active dripping and can cause coolant loss sufficient to trigger overheating if not addressed.

An annotated photograph of an automotive engine thermostat identifying the wax capsule and both disc valves.Example of the part — not this vehicle

A double-valve engine thermostat, labelled: the wax capsule is what sticks.

Dougsim · CC BY-SA 3.0 · Wikimedia Commons

Symptoms to notice

  • White or orange crystalline deposits or dried coolant staining visible on the thermostat housing and coolant pipe fittings on the intake manifold side of the engine
  • Sweet antifreeze smell from the engine bay after reaching operating temperature, and coolant reservoir level dropping incrementally between service intervals

What to check

  1. Inspect the thermostat housing and coolant outlet pipe on the upper intake side of the engine for crystalline mineral deposits or wet staining.
  2. Check the plastic coolant crossover pipe where it meets rubber hose ends for hairline cracks.
  3. If a workshop inspection is possible: Pressure test the cooling system to 100 kPa with a hand pump tester and watch for pressure drop over five minutes.
  4. Remove the thermostat housing to directly inspect the O-ring for hardening, flattening, or cracking.

Where to look: Upper engine, intake manifold side — thermostat housing on the driver's side of the VQ engine

Parts involved: Thermostat.

Ask the seller

  • “Is the coolant level stable between top-ups, and has it ever needed topping up between services?”
  • “Has the thermostat housing or any coolant hose fittings been replaced during the vehicle's service history?”
Other Infiniti M engines and years6 documented issues that do not apply to the one you picked.
Engine, transmission & cooling3

01VG30DE/VG30DET Timing Belt Failure

Check for oil leaks around valve covers, sump and gaskets.petrol1986–1994Engine
CommonEngine $455–$910 to fix

Does not apply

Unconfirmed. This entry does not match our record of which engines and years this model was sold with, and is awaiting review. Confirm it against the car before acting on it.

The VG30 engine family uses a rubber timing belt rather than a chain. At the age and mileage of F31 Leopards now in circulation, the belt is frequently original or has an unknown service history. Belt failure causes complete valve-to-piston contact as the VG30 is an interference engine, resulting in catastrophic cylinder head damage. The belt tensioner and idler pulleys are also age-susceptible and must be replaced concurrently.

Symptoms to notice

  • Timing chain or belt related noise at startup
  • Difficult cold start or unstable idle

What to check

  1. Check for oil leaks around valve covers, sump and gaskets.
  2. Inspect coolant condition and level.

Parts involved: Timing belt.

02VG30DET Turbo Oil Feed and Return Line Failure

Check for oil leaks around valve covers, sump and gaskets.petrol1986–1994Engine
CommonEngine $1,680–$3,360 to fix

Does not apply

Unconfirmed. This entry does not match our record of which engines and years this model was sold with, and is awaiting review. Confirm it against the car before acting on it.

The turbocharger oil feed banjo bolts and feed lines on the VG30DET develop micro-cracks from heat cycling, causing oil mist to enter the turbo bearing housing at reduced pressure. The return drain line to the sump accumulates sludge from infrequent oil changes, causing back-pressure that forces oil past the turbine shaft seal into the exhaust. Blue smoke at idle following a highway run is the diagnostic indicator. Turbo failure from oil starvation follows.

Symptoms to notice

  • Blue or white smoke from exhaust
  • Low oil pressure warning light
  • Difficult cold start or unstable idle

What to check

  1. Check for oil leaks around valve covers, sump and gaskets.
  2. Inspect coolant condition and level.

Parts involved: Turbocharger.

03F31 Aluminium Radiator Electrolytic Corrosion

Inspect coolant colour and level.petrol1986–1993Cooling
CommonCooling $644–$1,288 to fix

Does not apply

Unconfirmed. This entry does not match our record of which engines and years this model was sold with, and is awaiting review. Confirm it against the car before acting on it.

The aluminium radiator in F31 Leopard models is susceptible to electrolytic corrosion accelerated by mixed coolant types and stale coolant chemistry. Pinhole leaks develop in the core tubes, and the alloy end tanks pit internally. The thermostat housing on the VG30 is also aluminium and corrodes at the mating flange with the hose, causing coolant weeping that is often overlooked. Low coolant from these slow leaks causes intermittent overheating that can warp the cylinder head.

Symptoms to notice

  • Engine overheating under load
  • Coolant loss or steam from engine bay

What to check

  1. Inspect coolant colour and level.
  2. Check for white exhaust smoke or sweet smell indicating coolant in combustion.
  3. If a workshop inspection is possible: Pressure test the system.

Parts involved: Body corrosion, Radiator.

Electrical2

01Y51 Hybrid High-Voltage Battery Cell Imbalance and Degradation

The Y51 Fuga Hybrid combines a VQ35HR 3.5L V6 with a 50 kW electric motor and a lithium-ion high-voltage battery pack.hybrid2009 onwardElectrical
CommonElectrical $4,000–$12,000 to fix

Does not apply

The Y51 Fuga Hybrid combines a VQ35HR 3.5L V6 with a 50 kW electric motor and a lithium-ion high-voltage battery pack. Individual battery cells degrade at different rates, causing voltage imbalance across the module. The battery management system attempts to compensate but eventually flags faults when cell spread exceeds tolerance. Advanced degradation reduces the pack's ability to accept regenerative charge or supply assist power, increasing fuel consumption and placing additional load on the combustion engine.

Symptoms to notice

  • Hybrid system warning light illuminated on the instrument cluster, accompanied by reduced or absent electric motor assist during acceleration
  • Fuel economy measurably worse than factory specification, and the battery state-of-charge indicator fluctuating erratically or dropping suddenly during light driving

What to check

  1. Connect Nissan CONSULT-III Plus or a compatible hybrid scanner and read individual cell voltages across the battery modules — a spread greater than 0.3 V between the highest and lowest cell indicates imbalance requiring pack replacement.
  2. Check P3000-series hybrid fault codes.
  3. Inspect the battery cooling fan in the boot for blockage or motor failure, as thermal stress accelerates cell degradation.

Where to look: Boot floor beneath the luggage compartment load panel

Ask the seller

  • “Has the hybrid battery been tested for cell balance or capacity, and are there any outstanding hybrid warning lights?”
  • “What is the current real-world fuel economy compared to when the car was new?”

02Electric Power Steering Column Motor and Torque Sensor Failure

Check the instrument cluster for an active EPS warning lamp.2009 onwardElectrical
OccasionalElectrical $1,500–$4,000 to fix

Does not apply

Y51 Fuga models equipped with electric power steering use a column-mounted EPS motor and a torque sensor to provide variable steering assistance. The torque sensor is susceptible to internal calibration drift and connector corrosion, while the EPS motor brushes and control module can fail independently. Any of these failures triggers an immediate loss of power assistance — the steering remains functional but requires substantially greater physical effort, creating a safety hazard at low speeds and during parking.

Symptoms to notice

  • EPS warning light illuminated on the instrument cluster with a sudden increase in steering effort, especially noticeable at parking speeds
  • Intermittent return of power steering assistance after the vehicle is switched off and restarted, and abnormal steering wheel return-to-centre behaviour

What to check

Check the instrument cluster for an active EPS warning lamp. Connect a CONSULT-III or compatible scanner and retrieve fault codes from the EPS control module — codes for torque sensor signal range or motor current faults confirm the diagnosis. Inspect the EPS motor connector at the lower steering column for pin corrosion. With a helper, turn the wheel slowly through full lock while monitoring live torque sensor data for signal drop-outs or spikes.

Where to look: Lower steering column assembly, behind the dashboard on the driver's side

Parts involved: Steering rack.

Ask the seller

  • “Has the EPS warning light ever come on, and has the power steering ever cut out unexpectedly?”
  • “Does the steering feel consistently light and responsive, or does it ever feel heavier on one side or suddenly require more effort?”
Body, brakes, suspension & interior1

01Y51 Air Suspension Compressor Failure

Check ride height at all four corners on level ground before startup.petrol2009 onwardSuspension
OccasionalSuspension $1,200–$4,000 to fix

Does not apply

The Y51 Fuga's optional air suspension system uses an electric compressor to maintain ride height at all four corners. Compressors fail from moisture ingestion into the air lines and heat fatigue on the compressor motor, typically presenting at 80,000–120,000 km. Failure causes the car to sink to bump stops overnight and triggers a suspension warning light. Replacement compressors are expensive and refurbished units have variable reliability. A secondary failure mode is air strut seal degradation causing individual corner sag.

Symptoms to notice

  • Vehicle sits low or at bump stops after parking overnight
  • Suspension warning light on dashboard
  • Air compressor audible running for extended periods after startup
  • Uneven ride height between corners

What to check

  1. Check ride height at all four corners on level ground before startup.
  2. Note if any corner sits lower.
  3. Start the car and listen for the air compressor cycling — extended or constant cycling indicates a leak.
  4. Confirm the car returns to correct ride height within 30–60 seconds of startup.

Where to look: Air suspension compressor (engine bay or boot area), air struts at each corner

Parts involved: Air suspension strut.

Ask the seller

  • “Does the car sit at the correct height after being parked overnight?”
  • “Has the air suspension compressor ever been replaced?”
  • “Is any suspension warning light currently on?”
  • “Any history of air suspension service or strut replacement?”

Infiniti M faults in detail

Narrowed to the Infiniti M · 2004. 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.

VQ35DE/VQ45DE Timing Chain Tensioner Rattle — Cold Start (Y50)Major · Engine

What these repairs cost on other cars

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

Other Infiniti models

Infiniti G3510 documented faults

Infiniti M buyer questions

Is the Infiniti M reliable?

Like any used car, it depends on the specific example and its service history. Across the 14 documented faults for the Infiniti M, the recurring problem areas are electrical, engine, and suspension. A Infiniti M 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 Infiniti M?

We've catalogued 14 known faults for the Infiniti M, covering electrical, engine, and suspension. All 14 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 Infiniti M?

Most single repairs on the Infiniti M fall between $644–$1,800 at NZ independent-workshop rates. Some of the 14 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 Infiniti M?

Yes. A Infiniti M 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.