2019 Infiniti QX50 Vehicle speed control Problems
- Complaints
- 7about this part
- Share
- 5%of 145 total for the year
- Median mileage
- 13,985miles
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 7 complaints about the vehicle speed control of the 2019 Infiniti QX50, 5% of the 145 complaints for this model year. Where a mileage was given, the median is 13,985 miles. 1 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.
“While driving, the vehicle will decline in acceleration and you can not increase acceleration. When turning the vehicle off, the car will proceed at a slow pace. Infiniti dealer told me that I needed to let the car warm up for 30 minutes. The engine makes noise as if the vehicle is in neutral. At times, once taking your foot off the brake pedal to switch the gas, the car will take off from under your foot. While driving, the car will come to a complete halt as if it was approaching a collision. All emergency indicators will go off. The car must be turned off to return to driving. …”
NHTSA complaint #11323350, filed 2020-05, 7,970 miles“Vehicle malfunctions randomly while driving or at a stop light and all of the driver assist/safety assist functions show error messages. It also happens while on the highway. I don't know if the car will stop on the highway.”
NHTSA complaint #11196438, filed 2019-04, 6,000 miles“Car experienced sudden braking on roadway upon entering a covered bridge. Red screen on dash and beeping. Foot on gas but not moving forward - Almost causing a crash and immediate risk of injury or death. Bringing vehicle into Infiniti dealer for service to see if there are diagnostics they can run to determine the cause of the event.”
NHTSA complaint #11711663, filed 2026-01“The contact owns a 2019 Infiniti QX50. The contact stated that while driving at an undisclosed speed and depressing the accelerator pedal, there was a beeping sound, and the vehicle stopped independently. A dealer was contacted. The vehicle was taken to the dealer to be diagnosed; however, the diagnostic result was unknown. The vehicle was not repaired. The manufacturer was not notified of the failure. The approximate failure mileage was 48,520.”
NHTSA complaint #11678562, filed 2025-08, 48,520 miles“The contact owns a 2019 Infiniti QX50. The contact stated while driving 60 MPH, the vehicle started to decelerate independently. The contact stated no warning light was illuminated. The contact was able to park on the side of the road and called the dealer to make them aware of the failure. The contact was able to continue driving to his destination. The contact stated he experienced the failure for a second time a year later. The contact called the local dealer and made them aware of the failure on the second occasion. The vehicle was not diagnosed or repaired. …”
NHTSA complaint #11454011, filed 2022-02, 20,000 milesRelated service bulletins
- 10136209Mar 26, 2018ADAS SYSTEM DTC C1A03, C1A04, AND/OR C1B01 SERVICE INFORMATION This bulletin has been amended. The Applied Vehicles section has been revised. No other changes have been made…
Vehicle speed control: other model years
Other parts of the 2019 Infiniti QX50
57 complaintsEngine cooling
32 complaintsOther or unknown
20 complaintsElectrical system
17 complaintsForward collision avoidance
17 complaintsTransmission and drivetrain
17 complaintsBrakes
11 complaintsFuel system
6 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 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