Home · 2020 Mazda Cx-50 · Complaints

What 105 owners told NHTSA about the 2020 Mazda Cx-50

These are the actual owner complaints behind this car’s reliability verdict, filed with the federal government, unedited. They’re unverified reports, not confirmed defects: read them as leads for your pre-purchase inspection, not a diagnosis.

All (105)Crash / fire / injury (12)Electrical system (30)Engine (17)Brakes (13)Driver assistance (11)Transmission & drivetrain (8)Body & structure (6)Airbags (5)Speed control (5)Fuel system (4)Lane Departure (4)

5 of 105 complaints match · Speed control · clear filters

Sep 25, 2025Engine & coolingSpeed control

The contact owns a 2020 Mazda CX-5. The contact stated that while the cruise control was activated and driving 65 MPH in the middle lane of a busy six-lane highway, the contact depressed the accelerator pedal, and the vehicle was suddenly stalled and coasted to a complete stop in the middle of the highway. The contact was able to restart the vehicle to continue driving. The vehicle was later taken to the local dealer, who was unable to determine the cause of the failure and was unable to confirm that the failure had occurred. The vehicle was not repaired. The manufacturer was not notified of the failure. The failure mileage was 32,000.

NHTSA ODI 11689633

Nov 4, 2024Speed control

I was in the drive thru at a restaurant and had my foot on the brake. After a couple of minutes of sitting with my foot on the brake, I gently pressed the accelerator to slowly move forward. All of a sudden the car sped up on its own like I had floored it. The speed of acceleration threw my head back and the car whipped around the front of the building as that's where I was steering. I braked and it thankfully stopped, but if a car had been in front of me I would have slammed into it. I could have hit a pedestrian. This was very scary and its an obvious safety concern. Mazda needs to look into this issue as I see there are other reports on this website and on the internet by numerous people for the same issue of sudden acceleration by the vehicle on its own.

NHTSA ODI 11623379

Sep 24, 2024Speed controlBrakesCrash1 injury

The vehicle accelerated on its own, while I was parking. My foot was on the brake when the vehicle just took off. It continued to accelerate until a building stopped it. I continued to brake but the vehicle did not stop. Once the vehicle collided with building, saw on the digital read out the "Brake System Malfunction" and then Camera Malfunction. The vehicle was towed from the site and the insurance adjuster has sent me word that the vehicle is a total loss.

NHTSA ODI 11616109

Apr 1, 2021Speed controlBrakesCrash

I WAS PARKED AT A FAST FOOD RESTAURANT THAT HAD AN OUTDOOR KIOSK FOR PAYMENT. I GOT OUT OF MY CAR TO PAY AND GOT BACK IN. AFTER ABOUT A MINUTE OR TWO MY CAR ACCELERATED FORWARD, GOING OVER A SLOPED CURB AND DOWN A SHORT LOW GRADE HILL, HITTING A POLE. I WAS CONFUSED TO HOW THE CAR WOULD GO FORWARD BECAUSE I WAS IN PARK THE WHOLE TIME.

NHTSA ODI 11405931

Aug 28, 2020Speed control

DUE TO THE STEERING WHEEL CONTROLS NOT BEING ILLUMINATED I ACCIDENTALLY INCREASED THE SPEED RATHER THAN DECREASING WHILE DRIVING AT NIGHT.

NHTSA ODI 11351838

Working with the data? Download all 105 complaints as CSV · fetched from NHTSA July 19, 2026

How to use these: a complaint is one owner’s report, filed voluntarily and published unverified. Patterns matter more than any single story. If several owners describe the same failure at similar mileage, put that system at the top of your pre-purchase inspection list. Back to the full 2020 Mazda Cx-50 verdict →