The contact owns a 2017 Buick Encore. The contact stated while reversing, the brake assist warning light illuminated, and the brake pedal was depressed but failed to respond. After the warning light disappeared, the brake started to respond. The vehicle was taken to the dealer for diagnosis however, the warning light was no longer illuminated. The vehicle was not repaired. The contact stated the failure persisted since the vehicle was purchased. The vehicle was taken back to the dealer however, the mechanic was still unable to diagnose the vehicle with the warning light illuminated. The manufacturer was made aware of the failure and referred the contact to the dealer for assistance. The vehicle was not repaired. The approximate failure mileage was 70,000.

- Fresno, CA, USA

I have an automatic transmission. When I am stopped at a traffic light on an incline, the car will sometimes roll backwards with my foot on the brake or when changing my foot to the gas pedal to move forward once the light changes. The more the incline; the worse the problem.

- Havertown, PA, USA

5 month after I had bought the car I was going 35 mph down a regular street when the car stop then when I want to move again the accelerator but then the car came to a complete stop where the engine had smoke coming out of it. The dealer said that there was a big hole in the engine. After they repair it no more than two weeks later I was going down a road where the car just turned off and it did not even let me move out of the road way. And now 3 weeks ago I was going down a street going 45 mph when the person in front of me stopped all of a sudden and I hit my brake so hard but they had not responded which led me to crash in front of the person in front of me. Luckily neither of us were injured but now for sure I know I do not feel safe driving any of General Motors cars whether is be Buick or GMC.

- Bakersfield, CA, USA

I had just leased this car, drove less than 2 miles from home when my brakes failed. I applied brakes to stop, but the car would not stop, it slowed to 14 mph - kept moving until I slammed into truck approx 3-400' ahead of me, had plenty of room to stop. Pretensioner failed - driver seatbelt collapsed around me while locked in place the second I slammed on brake. Driver seatbelt was on passenger side - visa-versa - GM rep saw the seatbelts at my home - I showed them to him. He told me which belt belongs on which side and I told him they were on the opposite sides. He picked each up and showed me the 'R-L' on the end of the belt and the "R" was the collapsed belt. The GM rep said the 'intact' belt would have bruised the person, it did, my passenger. This can be verified by my passenger. Airbag sensor dispensed gas during same accident-airbag did not deploy. The car had over $10K damage, fixed - GM rep checked car because I continually saying the brakes and seatbelt failed to anyone at West point that would listen. After checking car he stated nothing was wrong. Different dealership diagnostic equip showed airbag was fixed but seatbelt never recalled, then the story changed that it was. The diagnostic info printout showed where I 'braked' but then no info recorded anywhere. My passengers seatbelt worked, I was thrown into steering wheel and was injured. I have been in contact with GM CEO with letters and the claims dept who tell me they can't help me. If my lease wasn't recalled and I apparently had the above issues, they should have fixed them before my receiving it. They would not even speak to my passenger, officer at accident, tow truck driver who saw the seatbelt hanging out my door at the scene. I am still being treated and only want fairness and a different car. This one has had so many little problems and oddities besides what I am discussing.

- Houston, TX, USA

Car was parked on level ground outside home. Atv accidentally ran into rear bumper of car (had moved approximately 10 feet). Car rolled away and ended up rolling down a small hill, jumping a ditch and resting on another hill. Car moved approximately 300 feet prior to coming to a stop. Wheels were noted to be turning and rolling normally and car had minimal resistance to moving. Car was in park with secure break when we arrived at car.

- Rock, WV, USA

Rear brakes groan for first few applications in wet and damp weather. Dealer applied a GM tsb but problem still remains. GM says nothing more can be done.

- Portland, OR, USA

The contact owns a 2017 Buick Encore. While driving approximately 20 mph, the vehicle braked on its own and the stability track warning indicator illuminated. The vehicle was taken to the dealer (gainesville Buick GMC, 2101 North main street, gainesville, fl, 352-372-2583) where a road test was performed. The technician was unable to duplicate the failure. The manufacturer was made aware of the failure and acknowledged that there was an issue that needed to be investigated. The failure mileage was 1,200.

- Gainesville, FL, USA