How common are engine problems in the 2021 GMC Acadia?

NHTSA lists 37 engine-related complaints for the 2021 Acadia, which is 25% of all 149 complaints filed for that model year.

Is there a recall for the 2021 GMC Acadia engine?

No, the data shows no related recalls listed for the engine problem area on the 2021 Acadia.

At what mileage do 2021 Acadia engine problems typically show up?

NHTSA complaint data shows a median mileage at failure of 30,087.5 miles for engine-related issues.

Did engine problems cause crashes on the 2021 Acadia?

NHTSA records 4 crashes tied to complaints in this problem area for the 2021 Acadia, with no reported fires or injuries.

How does the 2021 Acadia compare to other years for engine complaints?

The 2021 Acadia's 25% share of complaints tied to engine issues is lower than 2020's 32% and 2022's 31%, but higher than years like 2016's 6%.

2021 GMC Acadia Engine Problems

NHTSA lists 37 engine-related complaints for the 2021 GMC Acadia, 25% of its 149 total complaints for the year. Owners reported issues at a median mileage of 30,087. No related recall is listed for this engine problem area.

Engine complaints: 37; 25% of 149
Crashes reported: 4
Fires reported: 0
Injuries reported: 0
Median mileage: 30,088 mi
Related recalls: 0

Typical engine symptoms owners report

Some owners report the accelerator pedal sticking or becoming bent at the terminal connector, causing unintended acceleration or sudden deceleration.
Multiple owners describe the vehicle stalling or shutting off without warning while driving, sometimes with a 'Steering Assistance Reduced' message.
Several complaints mention loud rattling, buzzing, or vibration noises from the exhaust area, often traced to a failed exhaust resonator or muffler assembly.
One owner reported the engine losing power completely while descending a mountain grade at highway speed.
Owners report the engine revving unexpectedly high while stopped, accompanied by hard, jarring transmission shifts.

When 2021 GMC Acadia engine complaints were filed

First complaint Aug 5, 2021, latest May 30, 2026.

37 complaints filed with NHTSA from Aug 2021 to May 2026; peak Nov 2025 (6).

Engine recalls for the 2021 GMC Acadia

No safety recalls on record for this model year.

Engine complaints by Acadia model year

Raw complaint counts per model year; newer years have had less time to accumulate complaints.

201091 (27%)
201162 (23%)
201245 (15%)
201325 (19%)
201453 (11%)
201522 (9%)
201615 (6%)
201771 (10%)
201838 (10%)
201961 (16%)
202033 (32%)
202137 (25%)
202215 (31%)
202313 (30%)
202412 (20%)
20257 (11%)

Frequently asked questions

How common are engine problems in the 2021 GMC Acadia?: NHTSA lists 37 engine-related complaints for the 2021 Acadia, which is 25% of all 149 complaints filed for that model year.
Is there a recall for the 2021 GMC Acadia engine?: No, the data shows no related recalls listed for the engine problem area on the 2021 Acadia.
At what mileage do 2021 Acadia engine problems typically show up?: NHTSA complaint data shows a median mileage at failure of 30,087.5 miles for engine-related issues.
Did engine problems cause crashes on the 2021 Acadia?: NHTSA records 4 crashes tied to complaints in this problem area for the 2021 Acadia, with no reported fires or injuries.
How does the 2021 Acadia compare to other years for engine complaints?: The 2021 Acadia's 25% share of complaints tied to engine issues is lower than 2020's 32% and 2022's 31%, but higher than years like 2016's 6%.