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Transmission and drivetrainPart report

2021 Infiniti QX50 Transmission and drivetrain Problems

Complaints
4about this part
Share
10%of 41 total for the year
Median mileage
—not reported
Trend
Not enough dataFewer than 15 complaints, too few for a reliable trend.

NHTSA recorded 4 complaints about the transmission and drivetrain of the 2021 Infiniti QX50, 10% of the 41 complaints for this model year. 2 of these say a crash was involved, according to the filers.

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.

“This vehicle is equipped with a push button to start and stop the vehicle engine. The button is mounted horizontally next to the gear selector switch near the driver. Twice now, while traveling at highway speeds, the vehicle engine has stopped when my dog taps on the switch. I usually secure my dog while traveling with him, but there are occasions when his seat belt needs to be released, usually due to him getting tangled up. …”

NHTSA complaint #11453466, filed 2022-02

“Without any warning or indicator light on the dash, the vehicle lost power when pulling out of our driveway - we live on a main road and were very lucky not to be hit by upcoming traffic. The car went into limp mode and would not accelerate past 20mph. We have been fighting with Infiniti for the last three weeks as no one can find the problem and they finally said a new engine was needed. There is on 35,000 miles on this car and we had to fight to have this replacement covered under warranty. Now that parts are back ordered and we are not receiving any help. …”

NHTSA complaint #11621911, filed 2024-10

“On June 16, 2026, a 2021 Infiniti QX50 experienced a safety-related malfunction while being driven at approximately 15–20 mph. The vehicle suddenly jerked, lost power response, displayed multiple warning lights, showed a “System Fault – See Owner’s Manual” message, and became unresponsive/difficult to control. The engine remained on, but the vehicle did not respond properly. The vehicle struck a fixed object/rock. A police report was filed/requested, and medical evaluation was sought afterward. …”

NHTSA complaint #11747250, filed 2026-06

“The contact owned a 2021 Infiniti QX50. The contact stated that while driving at 25 MPH, he collided with another vehicle on the rear driver's side of the vehicle. As a result, the vehicle was thrust off the roadway, coming to a complete stop after colliding with a pole, and the front passenger side wheel disconnected from the axle. The air bags were deployed. A police report was filed, and injuries were reported. The contact was later treated for various nondescript injuries. The vehicle was towed to a tow yard and declared a total loss by his insurance. …”

NHTSA complaint #11542783, filed 2023-09

Related service bulletins

Transmission and drivetrain: other model years

YearComplaintsShare of year
2024120%
2022212%
2021410%
2020412%
20191712%
201718%
2016316%

Other parts of the 2021 Infiniti QX50

Engine
18 complaintsElectrical system
8 complaintsForward collision avoidance
8 complaintsEngine cooling
7 complaintsBrakes
4 complaintsOther or unknown
3 complaintsFuel system
2 complaintsExterior lighting
1 complaintsLane departure
1 complaintsSteering
1 complaintsBody and structure
1 complaintsVehicle speed control
1 complaints

← All problems reported for the 2021 Infiniti QX50

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