Buick Encore gx Engine Problems
56 owner complaints filed with NHTSA across 6 model years.
Complaints by Year
Worst year: 2021. Best year: 2025.
Owner Reports
A representative sample of complaints filed with NHTSA.
The contact owned a 2023 Buick Encore. The contact stated that while the vehicle was in park and shifting into the Drive position, the accelerator pedal was lightly depressed when the vehicle violently accelerated forward. No warning lig...
The contact owns a 2022 Buick Encore. The contact stated that while driving at an undisclosed speed, the emissions warning light illuminated and hot air was coming from the A/C unit, despite the A/C cooling setting being activated. The v...
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 b...
6/4/26 Took to dealer and stated that the check engine light was on and car was running sluggish. Had stopped at Autozone and their scan showed the code P0102. The dealer charged me 259.00 to do a diagnostic showing the same thing. 6/2...
When driving on the freeway 60 mph, the car jerked and locked up, no warning lights, speedometer was rising and dropping rapidly, car slowly dropped speed. Had to pull on the side of the road, when car was put to parked, neutral, or dri...
While driving check engine suddenly illuminated following by a "warning reduced engine power" message. Car began driving sluggish and driving over 35mph caused serious trembling. After multiple diagnosis with several engine codes point...
Second complete powertrain failure on March 14, 2026 at 13,993 miles, nine days after first repair (complete transmission replacement for bone-dry sealed transmission). Symptoms: sudden loss of power on highway (unable to exceed 20 mph w...
The contact owns a 2025 Buick Encore GX. The contact stated that after refueling the vehicle, the gas pump nozzle was difficult to remove from the fuel filler neck when the vehicle was done refueling. The contact stated that there was on...
The contact owns a 2020 Buick Encore GX. The contact stated that while driving at an undisclosed speed, the vehicle began to shake with abnormal sounds coming from the engine compartment. The check engine warning light was illuminated. T...
Evap leak detection pump failed at 78,871 miles. 2022 models and beyond are covered for this defect.
Turbo charger has gone out 4 times since I purchased it in April 2021. I have been on the interstate driving and suddenly my car slows down and a message that says “engine power reduced” comes up and my check engine light comes on. T...
Vehicle overheating randomly due to faulty Coolant Control Valve. Vehicle goes into reduced power mode and also instructs you to pull over and idle engine. Part is on National backorder for weeks. The issue could cause Vehicle to beco...