This page covers 2 recalls, 376 owner complaints, NHTSA crash-test ratings and EPA fuel economy for the 2018 GMC Acadia.
20–23 mpg combined
10.2–11.8 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 4 tested variants for this model year.
4/5 Overall
NHTSA 5-Star Safety Rating
Powertrain complaints dominate what 2018 GMC Acadia owners report, and the most consistent pattern is a false "Shift to Park" warning. Owners describe the message appearing on the dashboard, often with a continuous audible chime, even when the transmission is correctly in park and the vehicle is shut off. Many report it happening repeatedly, and some say they had to disconnect the battery to silence the alert. A related powertrain thread involves the coolant temperature sensor, with owners reporting the check engine light returning shortly after the part was replaced, suggesting the repair didn't hold. The electrical system draws the second-highest complaint volume, with some owners describing a "Steering Assist" error tied to temperature sensor readings, accompanied by the engine fan running and the air conditioning cutting out.
376
Total Complaints
8
Crash-Related
1
Fire-Related
5
With Injuries
By System
The 2018 GMC Acadia has two recalls, the more serious being a fuel pump that can detach and damage the high-pressure fuel line, creating a fuel leak and raising the risk of an engine fire.
The second recall involves the right front intermediate driveshaft, which can fracture and separate while driving, causing the vehicle to suddenly lose power and increasing the risk of a crash.
At a glance
What can fail
The high pressure fuel pump can separate from its mounting flange, potentially damaging the high pressure fuel line.
What the fix does
Dealers will replace the high pressure fuel pump and fuel pipe at no cost.
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
The right front intermediate driveshaft can fracture and separate during driving, potentially losing power to the wheels.
What the fix does
Dealers will replace the right front intermediate driveshaft assembly at no cost to you.
Summarized — see the official notice for exact wording, dates, and contacts.
