2018 Infiniti Q50 Fuel system Problems
- Complaints
- 6about this part
- Share
- 14%of 44 total for the year
- Median mileage
- 25,800miles
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 6 complaints about the fuel system of the 2018 Infiniti Q50, 14% of the 44 complaints for this model year. Where a mileage was given, the median is 25,800 miles.
Fewer than 15 complaints name this part, so treat the figures as a rough indication only.
Example complaints
Selected from NHTSA records; personal details are removed. They are consumer reports, not findings.
“Filing this complaint regarding a safety-related defect involving the turbocharger system on my 2018 INFINITI Q50. The vehicle has approximately 46,000 miles and is 8 years old. INFINITI/Nissan has acknowledged through its own Technical Service Bulletins (TSBs) that turbocharger failure on 2016–2018 Q50 3.0T vehicles is a known defect. …”
NHTSA complaint #11709489, filed 2026-01“Car has white smoke coming from the exhaust and the oil level keeps decreasing. Car stalls and takes time to accelerate P0106 code pops up from engine. There’s a rattle and whine noise coming from the engine bay. Also the gas was stuck accelerating. Had to switch the car to neutral so it does continue accelerating. After switching to neutral I was able to decrease power to the wheels and had to pull over on the road.”
NHTSA complaint #11649920, filed 2025-03Related service bulletins
- 10213151Apr 5, 2022SERVICE INFORMATION FOR FUEL GAUGE INACCURATE WITH DTCS STORED IN ECM SERVICE INFORMATION If a fuel level sensor has been diagnosed as sending an incorrect level signal, and one…
- 10208932Feb 7, 2022EVAP LEAK DTC P0442, P0455, P0456 INFORMATION This bulletin has been amended. See AMENDMENT HISTORY on the last page. Please discard previous versions of this bulletin.
- 10202176Aug 27, 2021R1717 Fuel Pump Campaign Quality Review ***** Retailer Announcement ***** INFINITI is committed to the safety, security and satisfaction of our clients and is conducting a…
- 10202170Aug 27, 2021P8314 Fuel Hose Campaign Quality Review ***** Retailer Announcement ***** INFINITI is committed to the safety, security and satisfaction of our clients and is conducting a…
- 10180978Sep 14, 2020INFINITI; DTC P0456 CAUSED BY EVAP LEAK AT VENT CONTROL VALVE O-RING This bulletin has been amended. See Amendment History on the last page. Please discard previous versions of…
- 10158424Mar 5, 2019INFINITI; P0171 AND P0174 SERVICE INFORMATION SERVICE INFORMATION Diagnosis for DTCs P0171 (FUEL SYS LEAN B1) and P0174 (FUEL SYS LEAN B2) have been revised for the APPLIED…
- 10144495Aug 15, 2018ALL MODEL YEAR 2012 AND NEWER INFINITI VEHICLES; EVAP LEAK DTC P0442, P0455, P0456 INFORMATION This bulletin has been amended. The publication date has been revised to include…
- 10143810Jul 12, 2018CAMPAIGN BULLETIN Fuel Hose Voluntary Service Campaign This bulletin applies only to vehicles equipped with a M274 2.0L engine. ***** Retailer Announcement ***** INFINITI is…
Fuel system: other model years
Other parts of the 2018 Infiniti Q50
17 complaintsAir bags
9 complaintsElectrical system
6 complaintsOther or unknown
6 complaintsBack-over prevention (rear camera)
3 complaintsBrakes
3 complaintsTransmission and drivetrain
3 complaintsWheels
3 complaintsEngine cooling
2 complaintsVehicle speed control
2 complaintsElectronic stability control
1 complaintsExterior lighting
1 complaints
← All problems reported for the 2018 Infiniti Q50
About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 31, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.
To check a specific vehicle for open recalls, use its VIN at nhtsa.gov/recalls. Methodology