2021 GMC Acadia: Recalls, Problems & MPG
Here are the deets on the 2021 GMC Acadia: 2 recalls, 150 owner complaints and up to 25 mpg combined.
Recalls
2 vehicle recalls from the manufacturer. Repairs are free. Check your VIN to see if one is still open on your car.
Fuel system Vehicle recall #21V422000 · 2021 · 572 vehicles
What's wrong: General motors, LLC. (gm) is recalling certain 2021 Cadillac xt5, xt6, and GMC acadia vehicles. The fuel supply lines May be improperly attached and seated.
Why it matters: Improperly attached and seated fuel supply lines May loosen or separate, causing a fuel leak and increasing the risk of a fire.
The fix: Dealers will inspect and replace fuel supply lines as necessary, free of charge. Owner notification letters were mailed on July 1, 2021.
Backup camera Vehicle recall #22V709000 · 2022 · 95,231 vehicles
What's wrong: The rearview camera coaxial cable connectors May have been crimped improperly, causing the rearview camera to fail or function intermittently.
Why it matters: An inoperative rearview camera can reduce the driver's rear visibility, increasing the risk of a crash.
The fix: Dealers will replace the coaxial cables, free of charge. Owner notification letters were mailed January 18, 2023.
Most-reported problems
Owner complaints filed with NHTSA, by component. One complaint can list several components. 0 mention a fire, 3 injuries and 0 deaths were reported.
What owners describe
- Electrical (38): the most common themes are stalls / loses power (11), electrical failure (8), door / lock issues (6).
- Engine (29): the most common themes are warning light on (9), noise or vibration (6).
- Fuel & propulsion (25): the most common themes are stalls / loses power (18), warning light on (4).
- Other / unknown (20): the most common themes are noise or vibration (6), electrical failure (3).
The 2021 GMC Acadia has 150 owner complaints, ranking #13 of 20 Acadia model years for complaints (well below the 278 average). Complaints peaked in 2025 (43 filed that year). The typical problem showed up when the car was about 3 years old, at a median of 27,792 miles. Neighboring years: 2020 (106 complaints, 6 recalls), 2022 (49 complaints, 3 recalls).
Engines & fuel economy (EPA)
| Engine | Transmission | Drive | City | Hwy | Comb. | Fuel |
|---|---|---|---|---|---|---|
| 2.0 L 4-cyl turbo | Automatic 9-spd | Front-Wheel Drive | 22 | 29 | 25 | Regular |
| 2.0 L 4-cyl turbo | Automatic 9-spd | All-Wheel Drive | 22 | 27 | 24 | Regular |
| 2.5 L 4-cyl | Automatic 9-spd | Front-Wheel Drive | 21 | 27 | 23 | Regular |
| 3.6 L 6-cyl | Automatic 9-spd | Front-Wheel Drive | 19 | 27 | 22 | Regular |
| 3.6 L 6-cyl | Automatic 9-spd | All-Wheel Drive | 19 | 26 | 21 | Regular |
Want the full repair deets? Get the factory manual.
Recall and complaint data tells you what goes wrong. A service manual tells you how to fix it: torque specs, wiring diagrams, fluid capacities and step-by-step procedures for the 2021 GMC Acadia.
Closest thing to the factory manual for most years. Pay once, keep it.
Most $25–$78, one-timePro-shop repair procedures, wiring diagrams and TSBs for your exact car.
From $19.99/mo · $39.99/yrOEM procedures, specs and recall/TSB info, the same source many shops use.
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FAQ
Does the 2021 GMC Acadia have any recalls?
Yes. NHTSA lists 2 vehicle recalls for the 2021 GMC Acadia. Recall repairs are free at any dealer, no matter how old the car is. Check your VIN at nhtsa.gov/recalls.
What are the most common 2021 GMC Acadia problems?
Owners have filed 150 complaints with NHTSA. The most-reported areas are electrical (38), engine (29), fuel & propulsion (25).
What gas mileage does the 2021 GMC Acadia get?
EPA ratings run up to 25 mpg combined (2.0 L, Automatic 9-spd), across 5 engine and transmission combos.
Where can I get a 2021 GMC Acadia repair manual?
eManualOnline sells downloadable manuals, Mitchell 1 DIY and ALLDATAdiy sell online access to factory repair data, and Haynes sells printed guides and online access. Pick a download if you want to keep it, or a subscription for wiring diagrams and TSBs.