2023 Buick Encore GX Engine Problems
- Complaints
- 6about this part
- Share
- 21%of 28 total for the year
- Median mileage
- 18,000miles
- Trend
- Too newThis model year is less than 4 years old, so a trend is not meaningful yet.
NHTSA recorded 6 complaints about the engine of the 2023 Buick Encore GX, 21% of the 28 complaints for this model year. Where a mileage was given, the median is 18,000 miles.
Fewer than 15 complaints name this part, so treat the figures as a rough indication only.
Example complaints
Selected from NHTSA records; personal details are removed. They are consumer reports, not findings.
“The engine reduces power light came on almost two months ago I toke it to family gmc in St. George in sc. They put is on a machine and said they said the I think turbo compassion for the air to the gas is bad. I am still waiting on them to receive a part to fix it. So I was wondering if anybody else had this problem with the 2023 buick encore gx”
NHTSA complaint #11678725, filed 2025-08“I am reporting a serious safety issue with my 2023 Buick Encore GX that repeatedly shuts off while driving and doesn’t restart when auto stop is on, it leaves me stranded in traffic. The vehicle has been in the shop multiple times since February 13, and the issue has not been resolved. A service advisor has stated he is not comfortable putting me back in the vehicle and wants to help get me out of this car. I am requesting escalation, a case number, and immediate resolution. After having the oil changed in February, the check engine light came on soon after. …”
NHTSA complaint #11725113, filed 2026-03“The contact owns a 2023 Buick Encore GX. The contact stated while depressing the accelerator pedal, the vehicle failed to immediately accelerate. On several occasions while depressing the accelerator pedal, the vehicle abruptly accelerated. The cause of the failure was not yet determined. The contact stated that the failure only occurred while the air condition was activated. The local dealer and the manufacturer were not notified of the failure. The failure mileage was 18,000.”
NHTSA complaint #11534862, filed 2023-07, 18,000 miles“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 light illuminated. The vehicle struck several trees and crashed into an unknown concrete object in the roadway where it came to a stop. It was unknown if a police report was filed. The driver sustained injuries to the left arm that needed stitches and a fractured elbow. The front seat passenger sustained 7 fractured ribs and a fractured leg. …”
NHTSA complaint #11633303, filed 2024-12, 18,000 miles“Vehicle struggles to stay running in the heat with the air conditioning running. Low voltage codes pulled at dealership. When the air conditioner is running there is an awful toxic smell from the vents both with or without recycling the air. Vehicle struggles to slow then accelerate, such as normal driving conditions in rush hour traffic. Poor ability to accelerate, hesitant and jolting. AWD model with winter package in the desert doesn’t fair well.”
NHTSA complaint #11552368, filed 2023-10Related service bulletins
- 11026017Jun 5, 2025This service bulletin provides information on replacing the intake manifold when the engine is replaced after severe internal engine damage.
- 11024485May 15, 2025The service bulletin advises the tech of a normal transmission shift condition and the delay in throttle response when the throttle plate is opened rapidly and advises the…
- 11023481May 9, 2025This service bulletin provides a procedure to fix an oil leak from a porous area at the cylinder head and how to fix it so that the engine does not have to be replaced.
- 11020254May 7, 2025This service bulletin provides information to dealership personnel for new vehicles with less than 1,000 miles that may not pass California smog inspection or smog inspection in…
- 11019503Apr 18, 2025This warranty administration bulletin provides policy information on vehicles outside of a California Emissions State who move to and register their vehicle in a California…
- 11019378Apr 12, 2025This service bulletin provides a procedure to replace the FPDCM if found to cause customers concerns of Crank No Start, Stalling, Malfunction Indicator Lamp (MIL) Illuminated…
- 11017430Apr 2, 2025This service bulletin provides information on normal engine characteristics/noise produced by the LIH or LBP engine.
- 11017256Mar 28, 2025This service bulletin provides a procedure to test and replace, if needed, the pressure sensor and/or the oil pump if the codes noted set due to the debris left in the pump…
- 11017263Mar 25, 2025This bulletin advises the technician to flush the cooling system multiple times if oil has been found in the cooling system and replace the parts that may be contaminated due to…
- 11016942Mar 4, 2025This bulletin advises the technician to flush the cooling system multiple times if oil has been found in the cooling system and replace the parts that may be contaminated due to…
Engine: other model years
Other parts of the 2023 Buick Encore GX
6 complaintsBrakes
5 complaintsElectrical system
5 complaintsSteering
5 complaintsFuel system
4 complaintsExterior lighting
3 complaintsTransmission and drivetrain
3 complaintsForward collision avoidance
2 complaintsBody and structure
2 complaintsSuspension
2 complaintsVehicle speed control
2 complaintsLane departure
1 complaints
← All problems reported for the 2023 Buick Encore GX
About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 28, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.
To check a specific vehicle for open recalls, use its VIN at nhtsa.gov/recalls. Methodology