2021 Buick Encore GX power train problems
10 owner complaints filed with NHTSA name the power train on the 2021 Buick Encore GX — 20% of all complaints for this model year.
What owners report
“A 2021 Buick Encore GX with 66,828 miles experienced sudden transmission failure while driving. The vehicle lost forward gear engagement and began slipping, creating an immediate safety risk to the driver and other motorists due to unexpected loss of vehicle propulsion and control. The vehicle was…”
filed May 5, 2026
“Turbocharger is defective. Reduced engine power. Engine Power reduced shows up on my dashboard. I bought the car brand new at Lindsey Buick in Ohio. This car is too young for this problem. Lindsey Buick and GM need to stand up to accountability and transparency when it comes to delivering top…”
filed Apr 23, 2026
Verbatim excerpts from complaints filed with NHTSA. Reports are not independently verified.
Power Train problems in other Encore GX years
| Year | Reports | Share |
|---|---|---|
| 2024 Encore GX | 3 | 11% |
| 2023 Encore GX | 3 | 13% |
| 2022 Encore GX | 12 | 41% |
| 2020 Encore GX | 16 | 24% |
Other reported problem areas on the 2021 Buick Encore GX
Counts are unique NHTSA complaints naming this component group. Complaints are unverified owner reports; mileage is computed only from complaints that included a usable odometer reading.