2011 Buick Regal transmission problems

Filed May 13, 2026 · Electrical, Engine · TX

While driving on the highway at 60 mph, warning on dash came on saying “engine power reduced” and drop down speed to around 25 mph and I could not accelerate more than 25 mph on the highway which could have caused an accident because of the traffic flow behind me. I put a code scanner under the dash and it read code P2138, Throttle pedal position sensor switch.

Filed Oct 28, 2023 · Engine, Fuel system · MA · crash

Preparing to park into a parking space in an off street parking lot the vehicle forcefully and rapidly accelerated on its' own and crashed into a fence. I was not accelerating. I attempted to stop the car using the brakes but they did not engage quickly enough to stop the rapid, forceful, and without warning acceleration. Buick has been contacted about the defect. Buick ran extensive diagnostics on the car and denies there is a defect. Police came to the scene and advised that given the 2 other incidents that I have experienced, the car is unsafe to drive given potential damage to others. A police report was filed.

Filed Oct 28, 2023 · Engine, Fuel system · MA

When pulling into parking space the car rapidly accelerated on its' own and crashed into the car in the next parking space. I did not have my foot on the gas, the car was simply idling. The acceleration was so rapid that applying the brake was useless.

Filed Oct 28, 2023 · Engine, Fuel system · MA · crash

I was parking in marked space. I had turned into space, my foot was off the gas pedal. The car was 3/4 into the space when it malfunctioned and rapidly accelerated into a hardened snow bank. i instantly braked but there was not enough space to avoid collision.

Filed Sep 3, 2021 · Transmission · 69,000 miles · NY

The contact owns a 2011 Buick Regal. The contact stated while driving approximately 10 MPH, the vehicle shut off without warning. The vehicle was able to be restarted but continued to experience the same symptoms. The contact stated no warning lights were illuminated. The vehicle was towed to a local dealer where it was diagnosed with needing the transmission replaced. The manufacturer was not informed of the failure. The failure mileage was approximately 69,000.

Filed Aug 14, 2021 · Electrical, Transmission · IN

When I shift the car from park to drive it does a VERY HARD jerk. And vehicle has no codes on dash or anything

Filed Nov 30, 2020 · Transmission · 59,000 miles · PA

When driving to the grocery store one day the car wasn't accelerating properly. When o leave the store the car won't move when in reverse, the engine will rev but no movement. Got the diagnostic done and with less then 59000 miles my transmission failed.

Filed Jul 5, 2020 · Brakes, Driver assistance · IA

None of the 4 recalls were fixed on this 2011 buick regal cxl 2.4l car when I purchased this car at billion auto in iowa city, iowa. The stabilitrak is bad and was never brought up in the process of purchasing the car and I have had to change my brakes, rotors, and calipers in the rear both sides 3 times in the last 2 years. I'm not happy.

Filed Mar 26, 2020 · Driver assistance, Steering · 156,013 miles · OK

I was driving down the city road and my car just shut off and lost all power to everything. I almost got hit. I then turned my car back on and the service stability trac light came on and the check engine light was flashing. I could nearly get it to go at all and my car was shaking and sputtering. It was the scariest thing I have ever dealt with. I had it put in the shop on 10/26/2018 and now it just happened to me again and its 03/26/2020.

Filed Oct 17, 2019 · Transmission · 133,000 miles · NC

Tl* the contact owns a 2011 buick regal. While driving approximately 35 MPH, the vehicle stalled. There were no warning indicators illuminated. The contact started the vehicle normally after a few minutes. According to the contact, the carfax report indicated that the transmission was replaced prior to him purchasing the vehicle. The vehicle was not taken to the dealer or an independent mechanic for diagnostic testing. The manufacturer was notified of the failure. The vehicle was not repaired. The approximate failure mileage was 133,000.