2023 Buick Encore: engine and transmission complaints
HIGH COMPLAINT SIGNAL
48%
10 of 21 relevant owner complaints are about the engine, transmission or fuel system
48% of relevant owner complaints filed with NHTSA on the 2023 Buick Encore are about the engine, transmission or fuel system. That is a model-level pattern, not bad luck.
Worse than 60% of the 1,230 model years we track (2010–2023).
Excludes 4 airbag, lighting and seat-belt recall complaints that would otherwise mask the signal (unadjusted: 40%).
The percentage is each model year's drivetrain complaint share. No elevated signal describes the model year, not any one car; a well-kept example of a flagged model can still be the right buy, and any of these still needs an inspection.
What owners reported
ENGINE12/31/20243 INJURED
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 concre…
FUEL/PROPULSION SYSTEM09/02/2026
Failure of the evaporative emission purge pump at 34,600 miles. Diagnostic code P146B (pump failure). VIN not included on the affected vehicle list but should be. Failed pump part number is 25204641 (matches affected pump part numbers).
FUEL/PROPULSION SYSTEM03/18/2026
the evaporative emissions purge pump or an ECM calibration fault code P0521
Three of 10 drivetrain complaints. The full report shows more, with quotes about the engine in the car you are looking at first.
Before you buy a 2023 Buick Encore
Ask the seller whether the engine has ever been repaired or replaced, and whether the car has shown stalling, loss of power, rough idle, oil consumption or a check-engine light.
Drive it from a cold start and long enough to warm up. Many engine faults hide once the car is warm.
Get an independent pre-purchase inspection from a mechanic you choose, and tell them to focus on the engine.
Ask for service records. A engine already replaced under warranty is a different car from one that was not.
Have the VIN?Paste it and get the full report for that car. First report free, then a 30-day pass covers a whole car search.
Experimental model-level information. This is not a vehicle inspection, vehicle-history
report, financial advice or purchase recommendation. It describes patterns across a model year, not the condition
of any individual vehicle.