2019 Infiniti Q50 Fuel system Problems
- Complaints
- 4about this part
- Share
- 13%of 30 total for the year
- Median mileage
- 49miles
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 4 complaints about the fuel system of the 2019 Infiniti Q50, 13% of the 30 complaints for this model year. Where a mileage was given, the median is 49 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.
“While driving vehicle if you suddenly stop vehicle would stop, however when applying pressure to gas pedal vehicle would not move, if foot is left on pedal car would jerk and then proceed forward. Unlike other vehicle after breaking hard vehicle would move without hesitation.”
NHTSA complaint #11493585, filed 2022-11“While operating the vehicle under normal driving conditions, the engine experienced a significant loss of power and reduced acceleration. The issue is believed to be related to turbocharger failure within the engine system. The loss of power created a safety concern, particularly when attempting to merge into traffic and maintain highway speeds. The vehicle did not respond as expected when acceleration was needed, which could increase the risk of an accident in certain driving situations. …”
NHTSA complaint #11732566, filed 2026-04“The contact owns a 2019 Infiniti Q50. The contact stated while driving at high speeds, the rear end became very unstable. The ABS would not operate properly. While depressing the brake pedal, there was no pulsation to the brake pedal. Additionally, the collision avoidance system randomly activated causing the vehicle to stop abruptly with no object or vehicle nearby. The contact also stated that the high-pressure fuel lines were leaking causing an odor of fuel to be present. The vehicle was taken to an unknown dealer who was unable to determine the cause of the failure. …”
NHTSA complaint #11353819, filed 2020-09, 49 miles“Shortly after purchasing the vehicle, I began experiencing serious performance issues. While driving, the vehicle suddenly lost power, would not accelerate properly, and warning lights appeared on the dashboard. The vehicle eventually shut off while in operation. The vehicle was inspected by a dealership, which initially stated there were no issues. However, the problem continued and worsened. The vehicle was then inspected by an authorized Infiniti dealership, where technicians identified a consistent knocking noise coming from the engine. …”
NHTSA complaint #11721157, filed 2026-02Related 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.
- 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…
Fuel system: other model years
Other parts of the 2019 Infiniti Q50
10 complaintsElectrical system
6 complaintsOther or unknown
6 complaintsTransmission and drivetrain
6 complaintsSteering
4 complaintsSuspension
4 complaintsVehicle speed control
4 complaintsAir bags
2 complaintsBrakes
2 complaintsEngine cooling
2 complaintsExterior lighting
1 complaintsForward collision avoidance
1 complaints
← All problems reported for the 2019 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