Car accelerated by itself in Drive. I'd to either apply brake or put the car in Neutral to stop it. When shifted back to D, it auto accelerated. After I got home, shut it off and after 10 min. it started working normally.
NHTSA ODI 11585231
Home · 2017 Ford Cmax Energi · Complaints
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.
4 of 22 complaints match · Speed control · clear filters
Car accelerated by itself in Drive. I'd to either apply brake or put the car in Neutral to stop it. When shifted back to D, it auto accelerated. After I got home, shut it off and after 10 min. it started working normally.
NHTSA ODI 11585231
The vehicle accelerate on its own accord, despite no foot or pressure to the accelerator, even going uphill and including after braking. For example, ona flat road, I stepped on the brakes and began to decelerate, I released the brake and the vehicle immediately began to accelerate forward at a high speed. I had to slam the brakes to prevent further movement. This is one of many instances, the most common of which is acceleration upwards of 10-15mph after the accelerator is released. It appears as if the accelerator remains pressed forward, I can feel the accelerator move back into place significantly later than when I remove my foot. I fear for my life and safety, and that of others. The vehicle is available upon request. I have not gone to a dealer or service center. The vehicle has not been inspected, but I have read similar reports online. There were no warning lamps or messages, but the issues began October 2022, and have increased in frequency since.
NHTSA ODI 11498618
UNCOMMANDED ACCELERATION. THE CAR ACCELERATED TO ABOVE HIGHWAY SPEED, AND REQUIRED CONTINUAL BREAKING TO MAINTAIN CONTROL. WHEN HOME AND IN PARK, ENGINE CONTINUED TO REV TO MAX. SHUT CAR DOWN, AND WHEN RESTARTED IT RETURNED TO NORMAL OPERATION. NO OBSTRUCTION OF GAS PEDAL.
NHTSA ODI 11318708
THE CAR WAS IN ACCELERATION MODE AT EVERY SPEED ON THE HIGHWAY, RESIDENTIAL STREETS, AT STOP SIGNS, ALWAYS EXCEEDING THE SPEED LIMITS. I CONTINUALLY BRAKED TO MAINTAIN CONTROL. TIRES SQUEALED WHEN I RELEASED THE BRAKE AT STOP SIGNS. THERE WAS NOTHING UNDER THE GAS PEDAL. I DIDN'T DARE DRIVE INTO THE GARAGE; THE CAR WOULD HAVE BEEN IN THE KITCHEN. WHEN I PUT IT IN PARK, ENGINE STILL REVVED.
NHTSA ODI 11318715
Working with the data? Download all 22 complaints as CSV · fetched from NHTSA July 24, 2026