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Infiniti · Known Issues

2017 Infiniti Q50 Problems: 8 Known Issues

2017 model year · NHTSA recalls, manufacturer TSBs, and owner forum reports · Updated September 2026

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Issue summary

According to Au7o's research across NHTSA recalls, manufacturer TSBs, and owner forum reports, the 2017 Infiniti Q50 has 8 documented known issues, with 6 rated critical. The most serious are M274 2.0T Timing Chain and Camshaft Adjuster Wear ($1,500-$3,500 repair), Fuel Pump Control Module Software Causes Engine Stall (Recall 17V476000) ($0-$0 repair), Occupant Classification System Suppresses Passenger Airbag (Recall 16V244000) ($0-$0 repair), Driveshaft Fatigue Fracture Causing Loss of Drive Power (Recall 24V470000) ($0-$0 repair), Accessory Drive Belt Walks Off Pulleys and Shreds (TSB ITB18-012) ($250-$1,200 repair) and VR30DDTT Internal Turbocharger Oil Leak (Emissions Warranty Extension to 10yr/120k) ($0-$6,500 repair). Across all issues with published estimates, repair costs range from $200 to $6,500. DIY maintenance guides at au7o.io.

In This Article

  • Q50 Engine4
  • Q50 Fuel System1
  • Q50 Safety/Recalls1
  • Q50 Drivetrain1
  • Q50 Electrical1
  • FAQ
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In This Article

  • Engine4
  • Fuel System1
  • Safety/Recalls1
  • Drivetrain1
  • Electrical1
  • FAQ

All 8 Known Issues

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Other Infiniti Models

Infiniti G3723Infiniti FX3520Infiniti G3511Infiniti QX508Infiniti QX558Infiniti QX608

Frequently Asked Questions

What are the most common Infiniti Q50 problems?

According to Au7o's research across NHTSA recalls, manufacturer TSBs, and owner forum reports, the 2017 Infiniti Q50 has 8 documented issues. The most frequently reported are: M274 2.0T Timing Chain and Camshaft Adjuster Wear, Fuel Pump Control Module Software Causes Engine Stall (Recall 17V476000), Occupant Classification System Suppresses Passenger Airbag (Recall 16V244000). Of these, 6 are rated critical and should be addressed promptly.

Is the Infiniti Q50 reliable?

The 2017 Infiniti Q50 has 8 known issues compiled from NHTSA recalls, manufacturer TSBs, and owner forum reports. 6 issues are rated critical: M274 2.0T Timing Chain and Camshaft Adjuster Wear and Fuel Pump Control Module Software Causes Engine Stall (Recall 17V476000) and Occupant Classification System Suppresses Passenger Airbag (Recall 16V244000) and Driveshaft Fatigue Fracture Causing Loss of Drive Power (Recall 24V470000) and Accessory Drive Belt Walks Off Pulleys and Shreds (TSB ITB18-012) and VR30DDTT Internal Turbocharger Oil Leak (Emissions Warranty Extension to 10yr/120k). Prospective buyers should inspect for these issues and factor potential repair costs into their purchase decision. Regular maintenance following the manufacturer's schedule helps prevent many common problems.

How much does it cost to fix common Infiniti Q50 problems?

Repair costs for known Infiniti Q50 issues range from $0 to $6,500, depending on the specific problem and whether you choose DIY or professional repair. The most critical issue, M274 2.0T Timing Chain and Camshaft Adjuster Wear, typically costs $1,500-$3,500 to repair. Au7o provides step-by-step DIY maintenance guides that can help reduce repair costs.

What is the 2014-2018 Infiniti Q50 M274 2.0T Timing Chain and Camshaft Adjuster Wear?

The Q50's 2.0t uses the Mercedes-Benz M274 turbocharged four, shared with the C300 and GLC300. The timing chain and the camshaft adjusters (variable valve timing phasers) wear faster than the engine's design life, with problems commonly surfacing somewhere around 80,000 miles and… Repairs typically run $1,500-$3,500. Severity: high.

Content on this page was compiled with AI assistance using NHTSA complaints, TSBs, owner reports, and public automotive data. While we strive for accuracy, this information may contain errors. Always verify repair procedures and specifications with your vehicle's service manual or a qualified mechanic.

Data compiled from NHTSA recalls, manufacturer TSBs, automotive forums, and AI-assisted research. No aggregated owner-report counts available for this vehicle yet.

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On the 2014-2018 Infiniti Q50, the Q50's 2.0t uses the Mercedes-Benz M274 turbocharged four, shared with the C300 and GLC300. The timing chain and the camshaft adjusters (variable valve timing phasers) wear faster than the engine's design life, with problems commonly surfacing somewhere around 80,000 miles and reported as early as 60,000 on neglected cars. The first symptom is a brief metallic rattle on cold start as oil pressure builds and the tensioner takes up slack. Left alone, chain stretch throws off cam timing, sets correlation codes, and in the worst cases the chain skips teeth or breaks, which on this interference engine destroys valves and pistons. Extended oil change intervals and low oil level accelerate the wear.

This issue also affects: Infiniti FX45, Infiniti G37, Infiniti Q70

Common Symptoms

  • Metallic rattle for one to three seconds on cold start
  • Rattle or whine from the front of the engine that changes with RPM
  • Check engine light with camshaft/crankshaft correlation codes
  • Rough idle or reduced power
  • Engine misfire or failure to start after a loud bang

How to Fix

Treat a cold-start rattle on the 2.0t as a timing issue until proven otherwise rather than dismissing it as normal direct-injection noise. Have the shop scan for camshaft/crankshaft correlation codes and check actual cam timing against spec. Caught early, replacing the chain, tensioner, guides, and both camshaft adjusters is far cheaper than the engine. Change oil every 5,000 miles with the correct low-ash full synthetic instead of following the extended factory interval, and check the level between changes — this engine also consumes oil, and running it low is what kills the chain. On a used purchase, cold-start the car yourself before buying; a seller who has the engine already warm may be hiding exactly this noise.

What you need to fix it

Only diagnosis- and fitment-reviewed repair parts are linked here.

  • Genuine Infiniti M274 primary timing chain
    OEM13028-HG00F

    Measured chain-wear/stretch branch Fitment/availability: 13028-HG00F supersedes 13028-HG00C and 13028-90C0N and fits listed Q50 2LTURBO applications. Confirm 2016-2018 U.S.

    InfinitiPartsDeal
  • Genuine Infiniti M274 chain tensioner/adjuster assembly
    OEM13070-HG00F

    Confirmed primary chain-tensioner/adjuster failure branch Fitment/availability: 13070-HG00F fits listed Q50 2LTURBO applications and is cataloged as the chain tensioner/tensioner adjuster. Confirm VIN and test result; do not confuse it w…

    InfinitiPartsDeal
  • Genuine Infiniti M274 slack-side timing-chain guide
    OEM13091-HG00B

    Worn or damaged slack-side guide branch during confirmed timing service Fitment/availability: 13091-HG00B fits listed Q50 2LTURBO applications and is the slack-side/at-cylinder-head guide. Confirm VIN and diagram position; it is not the …

    InfinitiPartsDeal
  • Genuine Infiniti M274 tension-side timing-chain guide
    OEM13085-HG00B

    Worn or damaged lower tension-side guide branch during confirmed timing service Fitment/availability: 13085-HG00B fits listed Q50 2LTURBO applications and is the lower tension-side guide. Confirm VIN and diagram position; the catalog als…

    InfinitiPartsDeal

As an Amazon Associate, we earn from qualifying purchases; other part links may also earn au7o a commission. Confirm fitment by VIN before buying.

Typical repair cost:$1,500 - $3,500

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Community Reported
High ConfidenceVerifiedReviewed Aug 2026

On the 2016-2019 Infiniti Q50 VR30DDTT, early-production VR30DDTT engines leave the factory with the A/C compressor pulley bracket slightly out of plane with the rest of the accessory drive. The misalignment makes the serpentine belt track toward the edge of the smooth idler pulley, where it frays, walks off, and eventually shreds. Because a single belt drives the water pump, alternator, and A/C compressor, losing it means immediate charging failure and rapid overheating, and the shredded belt can damage the pulleys, alternator, and water pump on its way out. Infiniti issued TSB ITB18-012 covering the alignment inspection and correction procedure. Nissan later revised the lower smooth idler pulley with raised lips to keep the belt captive — the design that shipped on the RZ34 Z.

This issue also affects: Infiniti Q60, Nissan Z

Common Symptoms

  • Belt squeal or chirp, often worse on cold start or under A/C load
  • Visible fraying on one edge of the serpentine belt
  • Belt riding off-center on the smooth idler pulley
  • Battery and temperature warning lights together after the belt departs
  • Rapid overheating and loss of power steering assist

How to Fix

Inspect the belt at every oil change for fraying on either edge and check that it runs centered on the smooth idler. If it is tracking off, have the shop perform the ITB18-012 alignment procedure rather than just fitting a new belt — a fresh belt on a misaligned bracket fails again. Replace the smooth idler with the revised lipped-flange pulley (the later Z-spec part) or fit an aftermarket anti-jump pulley kit, and replace the tensioner at the same time if it shows play or rough bearing feel. Carry the belt failure seriously: if the belt goes while driving, stop as soon as it is safe rather than continuing on a dead water pump.

What you need to fix it

Only diagnosis- and fitment-reviewed repair parts are linked here.

  • Z1 Q50/Q60 VR30 anti-jump belt upgrade kit
    OEMZ1 assembled VR30 anti-jump kit

    Revised lipped-idler and new-belt branch after alignment is measured/corrected Fitment/availability: Fits listed 2016-2021 Q50 VR30DDTT and includes the revised smooth lower idler plus selectable belt. Confirm engine and belt option; it …

    Z1 Motorsports
  • Genuine Infiniti grooved idler pulley 11925-5CA0C
    OEM11925-5CA0C

    Confirmed grooved-idler wear branch Fitment/availability: Fits 2016-2024 Q50 3.0L VR30. This is the grooved idler and is not interchangeable by description with the smooth/lipped lower pulley; replace it only if its bearing, surface or r…

    InfinitiPartsDeal
  • OEM VR30DDTT belt tensioner assembly
    OEMOEM VR30DDTT tensioner assembly

    Confirmed rough, loose or weak-tensioner branch Fitment/availability: For VR30DDTT Q50/Q60 applications; replace only when inspection shows roughness, play, damage or inadequate tension.

    Z1 Motorsports

As an Amazon Associate, we earn from qualifying purchases; other part links may also earn au7o a commission. Confirm fitment by VIN before buying.

Typical repair cost:$250 - $1,200

Research This Issue

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Community Reported
High ConfidenceVerifiedReviewed Aug 2026

On the 2016-2018 Infiniti Q50 VR30DDTT, the turbocharger center bearing on the 3.0L twin-turbo VR30DDTT can wear prematurely and let engine oil leak internally past the bearing seals into the exhaust and intake tracts. Oil burning in the exhaust produces heavy white or blue smoke, fouls the catalyst, and trips the MIL. In severe cases the turbo loses boost control and the internal components come apart, which can send debris downstream. Infiniti acknowledged the defect with a turbocharger emission warranty extension covering 2016-2018 Q50 and 2017-2018 Q60, extending coverage on the turbocharger assembly to Full Useful Life — 10 years or 120,000 miles, whichever comes first — when the failure presents as white smoke or an oil leak with a MIL-on condition.

This issue also affects: Infiniti Q60, Nissan Z

Common Symptoms

  • Heavy white or blue smoke from the exhaust, especially after idling then accelerating
  • Check engine light with boost or manifold pressure codes
  • Rising oil consumption between changes
  • Loss of engine power or reduced boost
  • Whistling or siren-like noise from the turbochargers

How to Fix

If the car is within 10 years / 120,000 miles, take it to an Infiniti dealer and specifically reference the turbocharger emission warranty extension (bulletin MC-11014069) rather than accepting a customer-pay quote. The dealer diagnoses per the bulletin and replaces the affected turbocharger assembly at no charge when the criteria are met. Outside the extension, both turbos are typically replaced together along with the oil feed and drain lines; budget for the catalytic converter as well if the car ran with heavy smoke for a long period. Do not dismiss persistent P0106 on this engine as a simple MAP sensor — Infiniti's own bulletins tie it to turbocharger failure. Frequent oil changes with the correct 0W-20 and letting the engine idle briefly before shutdown after hard driving reduce bearing coking.

What you need to fix it

Only diagnosis- and fitment-reviewed repair parts are linked here.

  • Genuine Infiniti VR30 300-hp stock turbocharger, side-select
    OEM14411-5CA7D LH / 14411-5CA7C RH families

    Out-of-coverage confirmed failed-turbo branch for 300-hp Q50 Fitment/availability: For a VR30 Q50 with the 300-hp package only. Select driver/LH 14411-5CA7D family or passenger/RH 14411-5CA7C family after diagnosis and provide VIN to con…

    Z1 Motorsports
  • Genuine Infiniti VR30 400-hp stock turbocharger, side-select
    OEM14411-5CA6D / 14411-5CA6C families

    Out-of-coverage confirmed failed-turbo branch for 400-hp/Red Sport Q50 Fitment/availability: For the 400-hp package/Red Sport VR30 application only. Select the diagnosed side from the 14411-5CA6D and 14411-5CA6C current families and veri…

    Z1 Motorsports
  • OEM Infiniti Q50/Q60 VR30 turbo service gasket kit
    OEMZ1 39362 assembled OEM seal kit

    Required disturbed oil/coolant/inlet/outlet seal branch during confirmed turbo service Fitment/availability: Exact kit for 2016+ Q50 3.0t and 2017+ Q60 3.0t VR30DDTT.

    Z1 Motorsports

As an Amazon Associate, we earn from qualifying purchases; other part links may also earn au7o a commission. Confirm fitment by VIN before buying.

Typical repair cost:$0 - $6,500

Research This Issue

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Community Reported
High ConfidenceVerifiedReviewed Aug 2026

On the 2014-2018 Infiniti Q50, the M274 four-cylinder in the 2.0t burns noticeably more oil than owners expect, and consumption climbs with mileage. Reports commonly describe roughly a quart per 3,000 miles once the car passes 60,000 miles, with worse cases burning a quart every 1,500 miles. The usual contributors are piston ring wear and coking, valve stem seal hardening, and the crankcase ventilation system pulling oil vapor into the intake. Because the Q50 has no oil dipstick on this engine — the level is read through the instrument cluster — owners often do not notice the loss until the low-oil warning appears, and running the engine chronically low is what turns oil consumption into timing chain and bearing damage.

This issue also affects: Infiniti Q60, Mercedes-Benz GLA, Mercedes-Benz B-Class

Common Symptoms

  • Low oil level warning between scheduled oil changes
  • Consumption of a quart or more every 1,500 to 3,000 miles
  • Blue smoke on startup or under hard acceleration
  • Oil smell from the engine bay
  • Fouled spark plugs or misfires at higher mileage

How to Fix

Check the oil level through the vehicle information display at every other fuel fill rather than waiting for a warning, and keep a quart of the correct spec oil in the trunk. Establish the real consumption rate over a measured interval before authorizing repairs. If consumption exceeds roughly a quart per 1,000 miles, have the shop check crankcase pressure and inspect the PCV/crankcase pressure regulator in the cam cover — a failed diaphragm there is the cheapest cause and often sets a crankcase pressure code. Persistent blue smoke on startup after sitting points to valve stem seals; smoke under sustained load points to rings. Shortening the oil change interval to 5,000 miles with full synthetic slows ring coking. Expect the shop to also clean carbon from the intake valves on a direct-injected engine at this mileage.

What you need to fix it

Only diagnosis- and fitment-reviewed repair parts are linked here.

  • Genuine Infiniti M274 oil-separator/breather assembly
    OEM130G5-90C2N / 11830-HG00C

    Confirmed crankcase-ventilation/oil-separator failure branch Fitment/availability: 11830-HG00C is cataloged for Q50 2LTURBO and superseded by current 130G5-90C2N, which the official store describes as the oil-separator assembly including…

    InfinitiPartsDeal

As an Amazon Associate, we earn from qualifying purchases; other part links may also earn au7o a commission. Confirm fitment by VIN before buying.

Typical repair cost:$200 - $4,000

Research This Issue

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Community Reported
High ConfidenceVerifiedReviewed Aug 2026

On the 2016-2018 Infiniti Q50, q50 sedans with the 2.0L turbo four use a saddle-shaped fuel tank with a transfer system that moves fuel between the two lobes. Incorrect Fuel Pump Control Module software allows the main tank lobe to run too low to feed the engine even though usable fuel remains on the other side and the gauge still shows fuel available. The result is an engine stall while driving, typically at lower indicated fuel levels. NHTSA campaign 17V476000 covers 2016-2018 Q50 and 2017 Q60 with the 2.0L engine; the recall began August 29, 2017.

This issue also affects: Infiniti Q60, Mercedes-Benz GLA, Mercedes-Benz B-Class

Common Symptoms

  • Engine stalls while driving with fuel still showing on the gauge
  • Stalling occurs mainly at low indicated fuel level
  • Hesitation, surging, or loss of power before the stall
  • Restart succeeds after the car sits or after adding fuel

How to Fix

Have an Infiniti dealer reprogram the Fuel Pump Control Module with the corrected software under recall 17V476000 — free of charge, no mileage limit. Verify the campaign was actually performed on a used purchase rather than assuming it was; the fix is a software flash and takes under an hour. Until then, refuel before the gauge drops below roughly a quarter tank. If the car has already been reprogrammed and still stalls at low fuel, the fault is more likely a failing in-tank transfer/jet pump or the level sender, not the FPCM software.

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Typical repair cost:$0 - $0

Research This Issue

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Community Reported
High ConfidenceVerifiedReviewed Aug 2026

On the 2014-2017 Infiniti Q50, the front passenger seat's Occupant Classification System weighs and classifies the occupant to decide whether the passenger frontal airbag should be armed. On affected Q50 sedans the OCS can misclassify a normally seated adult as a child, or read the seat as empty while someone is sitting in it, and switch the passenger airbag off. The passenger airbag status light on the console reads OFF with an adult belted in. In a crash the passenger frontal airbag will not deploy. NHTSA campaign 16V244000 covers 2014-2017 Q50 and 2014-2016 Q50 Hybrid among a large group of Nissan and Infiniti vehicles.

Common Symptoms

  • Passenger airbag status light reads OFF with an adult in the seat
  • Airbag status flickers between ON and OFF over bumps
  • Airbag warning light illuminated on the instrument cluster
  • Seat reads as occupied when empty

How to Fix

Watch the passenger airbag status indicator every time an adult rides in the front passenger seat. If it reads OFF with an adult seated normally, get the car to an Infiniti dealer — on Q50 the remedy under 16V244000 is replacement of the OCS ECU (not just a reflash as on some other models in the campaign), free of charge. Do not attempt to work around it by adding weight to the seat or unplugging the sensor mat: that defeats the crash logic in both directions. Aftermarket seat covers and hard objects stored under the passenger seat can also confuse the sensor mat, so remove those before concluding the ECU has failed.

Typical repair cost:$0 - $0

Research This Issue

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Community Reported
High ConfidenceVerifiedReviewed Aug 2026

On the 2014-2018 Infiniti Q50, on rear-wheel-drive Q50 sedans the two-piece propeller shaft can develop fatigue cracks and fracture in service. When the shaft breaks the car loses all drive power without warning, and because the parking pawl in the transmission is no longer connected to the rear wheels the vehicle can roll away when shifted to Park unless the parking brake is set. NHTSA campaign 24V470000 covers 2014-2018 Q50 two-wheel-drive vehicles along with several related M and Q70 models; Infiniti's internal campaign numbers are R24A5 and R24A7. Owner notification letters were mailed August 13, 2024. AWD cars are not covered by this campaign.

Common Symptoms

  • Sudden total loss of drive power while the engine still runs
  • Loud bang or grinding from under the center of the car
  • Driveline vibration or clunk that changes with throttle load
  • Vehicle rolls when placed in Park without the parking brake applied

How to Fix

Check the VIN against Infiniti's recall lookup or NHTSA. If the car is covered, the dealer replaces the driveshaft free of charge under campaign R24A5/R24A7 with no mileage or age limit. Until the recall work is done, always set the parking brake before leaving the car in Park. A driveline vibration or clunk that changes with load, or a rhythmic thump that rises with road speed, warrants immediate inspection of the shaft and its center support bearing rather than waiting for the recall appointment.

Typical repair cost:$0 - $0

Research This Issue

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Community Reported
High ConfidenceVerifiedReviewed Aug 2026

On the 2014-2026 Infiniti Q50, the dual-screen InTouch infotainment system suffers from significant lag, freezing, and occasional black screens. The system uses an outdated processor that struggles with modern navigation and connectivity demands.

This issue also affects: Infiniti Q60, Nissan Altima

Common Symptoms

  • Touchscreen unresponsive to inputs
  • Navigation freezing mid-route
  • Bluetooth disconnecting frequently
  • Black screen on upper or lower display

How to Fix

Perform a system reset by holding the power button for 10 seconds. Update to the latest firmware via USB. In persistent cases, the infotainment module may need replacement. Some owners have had success with aftermarket head units.

Typical repair cost:$0 - $1,500

Research This Issue

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Community Reported
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get a full repair guide

What is the 2016-2018 Infiniti Q50 Fuel Pump Control Module Software Causes Engine Stall (Recall 17V476000)?

Q50 sedans with the 2.0L turbo four use a saddle-shaped fuel tank with a transfer system that moves fuel between the two lobes. Incorrect Fuel Pump Control Module software allows the main tank lobe to run too low to feed the engine even though usable fuel remains on the other sid… Repairs typically run $0-$0. Severity: high.

What is the 2014-2017 Infiniti Q50 Occupant Classification System Suppresses Passenger Airbag (Recall 16V244000)?

The front passenger seat's Occupant Classification System weighs and classifies the occupant to decide whether the passenger frontal airbag should be armed. On affected Q50 sedans the OCS can misclassify a normally seated adult as a child, or read the seat as empty while someone… Repairs typically run $0-$0. Severity: high.

What is the 2014-2018 Infiniti Q50 Driveshaft Fatigue Fracture Causing Loss of Drive Power (Recall 24V470000)?

On rear-wheel-drive Q50 sedans the two-piece propeller shaft can develop fatigue cracks and fracture in service. When the shaft breaks the car loses all drive power without warning, and because the parking pawl in the transmission is no longer connected to the rear wheels the veh… Repairs typically run $0-$0. Severity: high.

What is the 2016-2019 Infiniti Q50 Accessory Drive Belt Walks Off Pulleys and Shreds (TSB ITB18-012)?

Early-production VR30DDTT engines leave the factory with the A/C compressor pulley bracket slightly out of plane with the rest of the accessory drive. The misalignment makes the serpentine belt track toward the edge of the smooth idler pulley, where it frays, walks off, and event… Repairs typically run $250-$1,200. Severity: high.

What is the 2016-2018 Infiniti Q50 VR30DDTT Internal Turbocharger Oil Leak (Emissions Warranty Extension to 10yr/120k)?

The turbocharger center bearing on the 3.0L twin-turbo VR30DDTT can wear prematurely and let engine oil leak internally past the bearing seals into the exhaust and intake tracts. Oil burning in the exhaust produces heavy white or blue smoke, fouls the catalyst, and trips the MIL. Repairs typically run $0-$6,500. Severity: high.

What is the 2014-2018 Infiniti Q50 M274 2.0T Excessive Oil Consumption?

The M274 four-cylinder in the 2.0t burns noticeably more oil than owners expect, and consumption climbs with mileage. Reports commonly describe roughly a quart per 3,000 miles once the car passes 60,000 miles, with worse cases burning a quart every 1,500 miles. The usual contribu… Repairs typically run $200-$4,000. Severity: medium.

What is the 2014-2026 Infiniti Q50 InTouch Infotainment System Lag and Freezing?

The dual-screen InTouch infotainment system suffers from significant lag, freezing, and occasional black screens. The system uses an outdated processor that struggles with modern navigation and connectivity demands. Repairs typically run $0-$1,500. Severity: medium.