IllustrationFailure 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).
2023 Buick Encore Gx
Owner reports · Recalls · Investigations
Similar to other model years
Owner complaints for the 2023 Buick Encore Gx do not stand out strongly from the model-year median of 31.
About this comparison →How this year compares
Owner complaints by model year
Compare all Encore Gx years →Counts vary with age, sales and reporting. They are not failure rates.
What owners reported most
All reported categories
Tap a category to read its complaints. One report may name several components.
When problems were reported
Mileage at the reported incident
Limited mileage data: 3 of 25 reports include usable mileage. There isn’t enough coverage to show a useful chart.
NHTSA’s mileage field refers to the reported incident, not necessarily the filing date. This shows report counts, not the likelihood of a failure.
What to inspect
Issues worth paying extra attention to based on owner reports.
- Electrical System. Review the 5 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
- Engine. Review the 5 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
- Service Brakes. Review the 5 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
NHTSA owner reports · September 18, 2026 snapshot.
0 crash reports0 fire reports1 injury reports
Fuel/propulsion System complaints
3 reportsthe evaporative emissions purge pump or an ECM calibration fault code P0521
Vehicle appears not equipped to operate in heat with air conditioning on. Vehicle struggles to keep running, idles high and jerks while driving on the highway. When trying to accelerate after slowing down it doesn’t accelerate.
Official recalls
0No recalls in this snapshot.
Model-level recall history does not show whether a particular VIN is affected or has received a repair. Check a VIN with NHTSA ↗
NHTSA investigations
0No exact-year investigations in this snapshot.