2020 Buick Encore GX engine problems
12 owner complaints filed with NHTSA name the engine on the 2020 Buick Encore GX — 18% of all complaints for this model year.
What owners report
“I am submitting this complaint regarding several serious mechanical and electrical issues with my 2020 Buick Encore GX that raise significant concerns about the vehicle's reliability and safety. Most concerning, I was recently informed by the dealership that my vehicle requires another transmission…”
filed Jul 22, 2026
“2020 Buick Encore GX; pulling out of a service station, my check engine light illuminated, and message on cluster stated: Engine Power Reduced. I loss throttle response for accelerating. Accelerator pedal was pushed to the floor and no acceleration. Vehicle entered limp mode. Drove 15 miles from…”
filed Feb 17, 2026
Verbatim excerpts from complaints filed with NHTSA. Reports are not independently verified.
Engine problems in other Encore GX years
| Year | Reports | Share |
|---|---|---|
| 2024 Encore GX | 3 | 11% |
| 2023 Encore GX | 5 | 21% |
| 2022 Encore GX | 4 | 14% |
| 2021 Encore GX | 15 | 30% |
Other reported problem areas on the 2020 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.