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Fuel systemPart report

2019 Infiniti QX50 Fuel system Problems

Complaints
6about this part
Share
4%of 145 total for the year
Median mileage
8,750miles
Trend
Not enough dataFewer than 15 complaints, too few for a reliable trend.

NHTSA recorded 6 complaints about the fuel system of the 2019 Infiniti QX50, 4% of the 145 complaints for this model year. Where a mileage was given, the median is 8,750 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.

“After turning off the engine of my QX50 Infiniti 2019 when entering my garage, a very strong gas odor exists for many hours afterwards the car has been brought back several times for the problem and Infiniti has tried different parts after replicating the problem in their dealership however, there does not seem to be a fix. What does a consumer do about this.it has been in service center at grubbs Infiniti for approximately 50 days since the purchase of this car in november, 2018. …”

NHTSA complaint #11183790, filed 2019-03, 1,000 miles

“My 2019 Infiniti QX50 fwd has been wasting a lot of fuel compared to what is/was advertised on the window sticker. I leased the vehicle expecting the gas mileage to be somewhere between 24 and 31 mpg's, but in reality I have been experiencing 17 - 20 mpg. Maintenance has been performed on the vehicle as suggested by Infiniti, the tires are inflated to the correct tire pressure, but I still cannot get anywhere near the advertised fuel mileage. The vehicle has over 10,000 miles and I am extremely disappointed with the fuel mileage. …”

NHTSA complaint #11271741, filed 2019-10, 9,500 miles

“Strong gas smell in garage. Car had been parked inside garage for at least 5 hours. The smell was so strong that the garage door had to be opened for circulation. Did not see any actual fluid on floor of garage or near fuel/gas cap area. Not a regular occurrence, but extremely concerning.”

NHTSA complaint #11191934, filed 2019-03, 8,000 miles

“I was driving my vehicle and I stopped at a stop sign. When it was clear I proceeded onto the highway. I took a left at the first exit and could hear a weird knocking noise. I could also feel the car was not accelerating properly. The vehicle was not driving right. I called a tow and took it to a repair shop. The owner of the car shop said that a rod had been blown and I need a new engine. I am 7000 out of my drive train warranty.”

NHTSA complaint #11572721, filed 2024-02

“Engine seized on road due to bearing debris (confirmed by dealer photos), covered by recall 25V-437. Infiniti corporate denied repair, falsely citing “maintenance” despite negligible sludge. No loaner provided for two weeks, stranding me. Laws Violated: 49 U.S.C. § 30120 (free recall remedy), 49 CFR § 573.6 (interim support during delays).”

NHTSA complaint #11693690, filed 2025-10

Related service bulletins

Fuel system: other model years

YearComplaintsShare of year
2024120%
202125%
202013%
201964%
2016316%

Other parts of the 2019 Infiniti QX50

Engine
57 complaintsEngine cooling
32 complaintsOther or unknown
20 complaintsElectrical system
17 complaintsForward collision avoidance
17 complaintsTransmission and drivetrain
17 complaintsBrakes
11 complaintsVehicle speed control
7 complaintsSeats
5 complaintsSteering
3 complaintsBody and structure
3 complaintsBack-over prevention (rear camera)
2 complaints

← All problems reported for the 2019 Infiniti QX50

About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Nov 1, 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