Buick ENCORE GX engine problems
14 complaint narratives mention engine terms.
Key facts
227 owner complaints analyzed
3 distinct recall campaigns
17,327 mi median reported failure mileage
Scope: 2020 to 2026 model years. Data snapshot: . 60 complaints include usable failure mileage.
Engine operation evidence
14 of 227 complaints match this topic (6.2%). The keyword filter can include complaints that mention a transmission without reporting its failure. View matching rules.
Owner report 11461685 · 2022-04-21 (April 21, 2022)
I have only had the vehicle for a year. On multiple occasions the vehicle feels like it is slipping gears (more often when the autostop feature is turned on). On multiple occasions the vehicle has stalled out and would not do anything when pressing on gas- didn't even rev, did absolutely nothing. These stall outs happened crossing highways, at stop lights, stop signs, etc. There were no warnings prior to the incidences, though the vehicle did through an engine/transmission code afterwards, the code would go away. The first several attempts of t…
Owner-reported narrative. Look up ODI 11461685 at NHTSA ↗
Owner report 11513380 · 2023-03-23 (March 23, 2023)
The contact owns a 2020 Buick Encore GX. The contact stated that while driving at an undisclosed speed, the vehicle failed to accelerate immediately and stalled. Additionally, the EPC warning light was illuminated. The vehicle was taken to the dealer, who informed the contact that the fuel pump needed to be replaced; however, the part to do the repair was not yet available. The manufacturer was not made aware of the failure. The failure mileage was unknown.
Owner-reported narrative. Look up ODI 11513380 at NHTSA ↗
Owner report 11718640 · 2026-02-17 (February 17, 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 service station to my home, in limp mode, unable to accelerate. Called a technician mechanic who check for Diagnostic Trouble Codes; DTC P0299 Turbocharge/Supercharge "A" Under boost condition; is Confirmed, Pending, and Permanent code. Loss of power …
Owner-reported narrative. Look up ODI 11718640 at NHTSA ↗
Owner report 11726783 · 2026-03-24 (March 24, 2026)
I am writing to formally report a serious mechanical failure involving my vehicle and to request further review and assistance. While operating my vehicle, it unexpectedly stalled in the middle of an intersection, creating a significant safety hazard. At the time of the incident, the check engine light illuminated and the RPMs surged to a range between 6 and 8. I was able to safely move the vehicle to the side of the road, place it in park, and have it towed to a dealership for inspection. Following their evaluation, I was informed that the tra…
Owner-reported narrative. Look up ODI 11726783 at NHTSA ↗
Owner report 11435680 · 2021-10-06 (October 6, 2021)
The contact owns a 2021 Buick Encore GX. The contact stated that while at a stop sign, the RPM was fluctuating from 0 to 3,000 RPM. The contact stated that the vehicle stalled with the check engine warning light illuminated. The vehicle was able to be restarted. The contact mentioned the failure recurred multiple times with the vehicle being unable to be restarted. The vehicle was taken to the dealer where it was diagnosed that the emergency jack needed to be repaired under recall. The vehicle was repaired however, the failure persisted. The ve…
Owner-reported narrative. 9,000 miles reported. Look up ODI 11435680 at NHTSA ↗