Problems · NHTSA complaints
2015 Infiniti QX80 problems
Owners filed 18 complaints about the 2015 Infiniti QX80 with NHTSA between May 2015 and Jun 2026. The most-cited component is fuel/propulsion system (6).
Complaints
18
Filed with NHTSA
Crashes
1
Reported by owners
Fires
0
Reported by owners
Injuries
1
People reported injured
Deaths
0
Reported to NHTSA
Complaints by component
One complaint can cite several components
- Fuel/propulsion system6
- Engine5
- Air bags4
- Service brakes4
- Power train3
- Fuel system, gasoline2
- Vehicle speed control2
- Suspension1
- Seat belts1
- Other / unknown1
Complaints are unverified owner reports to NHTSA and are not normalized for sales volume. One complaint can cite several components.
Data from NHTSA Complaints API · synced Nov 11, 2026NHTSA vehicle page
When complaints were filed
Does it get worse with age? Complaints per calendar year filed
3
1
0
1
1
0
2
2
3
2
1
2
View as table
| Model year | Complaints filed per calendar year |
|---|---|
| 2015 | 3 |
| 2016 | 1 |
| 2017 | 0 |
| 2018 | 1 |
| 2019 | 1 |
| 2020 | 0 |
| 2021 | 2 |
| 2022 | 2 |
| 2023 | 3 |
| 2024 | 2 |
| 2025 | 1 |
| 2026 | 2 |
Mileage at failure isn’t a structured field in NHTSA complaint data, so we don’t chart it. Some owners mention it in their reports below.
Top problems in owners’ words
Verbatim from NHTSA complaints, newest first
Fuel/propulsion system
6 reports
“There is a strong smell of gas on the driver side after I have been driving. Other innfinity QX80 owners reported online with the same model, that this is in fact a recall issue for this make and model, and year. However when i call Infinity, they say they cant find anything on my car. it is not?? however your website clearly lists it as a problem for this particular car?? what do i do next.”
Engine
5 reports
“The contact owns a 2015 Infiniti QX80. The contact stated that on several occasions while driving approximately 20-25 MPH, the vehicle lost power, the engine revved abnormally, and the transmission failed to shift as intended. There were no warning lights illuminated. The vehicle was taken to a dealer; however, the cause of the failure was not duplicated. The manufacturer was not notified of the failure. The failure mileage was approximately 85,000.”
Air bags
4 reports
“The airbag system in my recently purchased (4 months ago)QX80 Infiniti 2015 is malfunctioning/failed. It is available for inspection upon request. The warning light came on within 2 months of my purchase. I took it to the dealerships for repair, was told “this is unusual for this age car & mileage” stating it was the driver curtain airbag module which I paid a large amount to have replaced. When I received the car back, the warning light was no longer on. A month & a half later, the warning light returned. Took it back to the same dealership where I am now told that when it was repaired prior it was merely a guess as to the problem & that now a different part of the system needs replacing (airbag diag system) “in hopes of this being the issue” There is also an accompanying hefty price for this repair. But I was also told (at this juncture) that if this part replacement did not take care of the problem, the next step would be to replace the airbag wiring harness which would cost $7,500.00 (total for all these “repairs” would be above $12,500) If they believe they had repaired the problem with the first repair, why do they not start there? Is/was my driver’s side…”
Service brakes
4 reports1 crash
“I WAS DRIVING DOWN BACK STREET AND APPLIED BRAKES DUE TO A STOP SIGN AHEAD OF ME AND MY VEHICLE DID NOT STOP. I WAS IN TOTAL SHOCK AT THE TIME OF THE ACCIDENT AND COULD NOT BELIEVE I REAR ENDED ANOTHER VEHICLE. THE DATE OF THE ACCIDENT WAS 2/9/2018. AFTER SPEAKING WITH TWO OF MY OTHER FRIENDS WEEKS LATER. MY FRIEND THAT OWNER A NISSAN MURANO REAR ENDED ANOTHER CAR WHEN SHE APPLIED THE BRAKES. MY OTHER FRIEND WHO OWNS AN INFINITY HAD HER VEHICLE IN THE SHOP FOR BRAKING PROBLEMS. TO ME THIS SEEMS A LITTLE IRONIC IF YOU ASK ME. *DSY”
Power train
3 reports
“The most glaring safety issue caused by below is the SUV will try to move forward on its own while stopped and the brakes pressed that can potentially cause a fender bender. Infiniti/Nissan 5.6L engines have a history of failed or failing viscous cooling fan clutches. This goes back over a decade based on the TSG released by NISMO. When the viscous fan begins to fail, the most glaring symptom is that ECM will compensate by revving up the engine RPM...specially with the AC on. This can cause the RPM to go from around 500 to 1000 RPM during an RPM surge. The surge is enough to move the SUV forward at a stop unless the brake is firmly pressed. On hot weather days, this risk is frequent and significant at a top. This viscous fan issue also puts signficant load on the engine and causes significant power loss to the drive train. This issue does not cause any type of "check engine" light since it is strictly a mechanical failure of the mechanism containing the fluids in the viscous assembly.”
Fuel system, gasoline
2 reports1 related recall
“The contact owns a 2015 Infiniti QX80. The contact stated while the vehicle was parked at the residence, he attempted to start the vehicle and the vehicle failed to start. There were no warning lights illuminated. The contact waited for a while before attempting to restart the vehicle. The vehicle was towed to an independent mechanic and was diagnosed with a defective fuel pump. The vehicle was not repaired. The manufacturer was notified of the failure. The approximate failure mileage was 95,000.”
Data from NHTSA Complaints API (owner reports, unverified) · synced Nov 11, 2026
Complaints are unverified owner reports to NHTSA and are not normalized for sales volume. One complaint can cite several components.