This page covers 2 recalls, 139 owner complaints, NHTSA crash-test ratings and EPA fuel economy for the 2021 GMC Acadia.
21–25 mpg combined
9.4–11.2 L/100km
Standard Sport Utility Vehicle 2WD
Fuel economy data from fueleconomy.gov (EPA / U.S. Dept. of Energy). Annual cost based on 15,000 mi/yr at 55% city driving and current fuel prices. MPG is U.S. gallons; L/100km converted. Ranges reflect the 5 tested variants for this model year.
5/5 Overall
NHTSA 5-Star Safety Rating
For the 2021 GMC Acadia, the heaviest complaint volume clusters around the engine and fuel/propulsion systems, followed closely by electrical issues. On the engine side, owners frequently describe cooling system problems, including thermostat faults, coolant temperature sensor failures, and radiator leaks, sometimes without any dashboard warning to flag the problem early. The fuel and propulsion complaints overlap with drivetrain concerns, with multiple owners reporting torque converter slipping and transmission-related hesitation. Electrical system complaints center heavily on the backup camera, with owners describing a black screen on reverse, intermittent flickering, or a camera error icon appearing in place of an image. Some owners also report reduced steering assist warnings appearing on the dashboard, occasionally alongside other warning messages.
139
Total Complaints
6
Crash-Related
3
With Injuries
By System
The 2021 GMC Acadia has two recalls, the more serious being fuel supply lines that may loosen or separate, allowing fuel to leak near the engine and raising the risk of a fire.
The second recall affects vehicles equipped with the optional Surround Vision feature, where a rearview camera cable can fail and cause the camera to cut out or stop working entirely, reducing the driver's view when backing up.
At a glance
What can fail
The rearview camera's coaxial cable connector may be improperly crimped, causing the rearview camera to stop working or work intermittently.
What the fix does
Dealers will replace the coaxial cables at no charge.
Summarized — see the official notice for exact wording, dates, and contacts.
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Driver Assistance
Ratings from NHTSA's New Car Assessment Program (NCAP). Based on 2 tested variants; worst-case ratings shown.
Complaints are owner-reported and reflect individual experiences, not confirmed defects. They are distinct from recalls. Data sourced from the national vehicle safety complaint database. See trending complaints →
At a glance
What can fail
Fuel supply lines may not be properly attached and seated, risking fuel leakage.
What the fix does
Dealers will inspect and replace fuel supply lines as needed at no charge.
Summarized — see the official notice for exact wording, dates, and contacts.
