Problems · NHTSA complaints
2021 Infiniti QX80 problems
Owners filed 7 complaints about the 2021 Infiniti QX80 with NHTSA between Jan 2023 and Jul 2026. The most-cited component is fuel/propulsion system (2).
Complaints
7
Filed with NHTSA
Crashes
0
Reported by owners
Fires
0
Reported by owners
Injuries
0
People reported injured
Deaths
0
Reported to NHTSA
Complaints by component
One complaint can cite several components
- Fuel/propulsion system2
- Vehicle speed control2
- Engine2
- Power train1
- Visibility1
- Exterior lighting1
- 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 8, 2026NHTSA vehicle page
When complaints were filed
Does it get worse with age? Complaints per calendar year filed
3
1
0
3
View as table
| Model year | Complaints filed per calendar year |
|---|---|
| 2023 | 3 |
| 2024 | 1 |
| 2025 | 0 |
| 2026 | 3 |
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
2 reports
“The vehicle loses power due to failure of fuel pump, this causes the vehicle to stall out whilst driving. exactly as described in [XXX] this is a known issue with 2021 Infiniti QX80 and Infiniti tells me there is no open recal for our vehicle. This is unsafe and dangerous.”
Vehicle speed control
2 reports
“I have been saying that my vehicle is a safety hazard since April 2022. I have had it to the dealer 4x since then in addition to opening up several cases with Inifiniti Customer Service, but nobody has been able to protect my family and I and remedy the situation. At times the vehicle will not accelerate even when I push the gas all the way down. Then it will kick in and surge forward. I also have told them that at times it feels as if someone has rear ended me. There is a recall out there for cars manufactured through April 2020, but mine was manufactured in September 2020. Infiniti's recall is #R21A3 and the NHTSA ID is 21V373. I have experienced the same exact symptoms as those covered under this recall. Now Inifiniti is telling me that my transmission needs to be replaced as a result of metal shavings in the oil. Again, this could all have been caused by this fuel pump issue which was on their radar in 2021 and 2022 when I brought my car in the first time. Infiniti has failed to help me in every step of the way beginning with their Service Tech not fixing the issue back in 2022 through 2024 when I have consistently expressed my concerns while the car was still under warranty.”
Engine
2 reports
“This is a 2021 Vehicle, and beginning in April of 2022, I have been telling my dealer that there is something wrong, but they haven't been able to fix it. When I am driving, there are times when the car will fail to accelerate. Also at times it feels like I have been rear ended and the car lurches. I have said this is a safety issue and neither the dealer nor Inifiniti Customer Consumer Affairs have taken this seriously and remedied the situation. They all say there is nothing they can do. I have taken it to the dealer 6 times and opened up a case with Infiniti back in 2024 with no resolution.”
Power train
1 report
Visibility
1 report
“The contact owns a 2021 Infiniti QX80. The contact stated while driving at approximately 65 MPH, the sunroof inadvertently exploded without impact. The contact stated that the sunroof was not being utilized and was covered and closed. The vehicle was not diagnosed or repaired. The dealer nor the manufacturer were notified of the failure. The failure mileage was approximately 62,000.”
Exterior lighting
1 report
“2021 INFINITI QX80. CONSUMER WRITES IN REGARD TO REAR TURN SIGNALS BEING TO LOW ON VEHICLE CAUSING SAFETY CONCERNS.”
Data from NHTSA Complaints API (owner reports, unverified) · synced Nov 8, 2026
Complaints are unverified owner reports to NHTSA and are not normalized for sales volume. One complaint can cite several components.