Before buying a used 2026 GMC Sierra, check whether recall repairs were completed, how it scored in crash tests and what owners report most often. Ask the seller for service records covering any recall listed below.
No owner complaints have been filed with NHTSA for this model year.
Source: NHTSA owner complaints. Complaints are unverified reports, not confirmed defects.
| Version | City | Highway | Combined |
|---|---|---|---|
| Sierra 2WD — Auto 10-spd, 8 cyl, 5.3 L | 14.7 L/100 km (16 mpg) | 11.8 L/100 km (20 mpg) | 13.8 L/100 km (17 mpg) |
| Sierra 2WD — Auto 10-spd, 6 cyl, 3.0 L, Diesel, Turbo | 10.2 L/100 km (23 mpg) | 8.4 L/100 km (28 mpg) | 9.4 L/100 km (25 mpg) |
| Sierra 2WD — Auto 8-spd, 4 cyl, 2.7 L, Turbo | 13.1 L/100 km (18 mpg) | 11.2 L/100 km (21 mpg) | 11.8 L/100 km (20 mpg) |
| Sierra 2WD with Sport Mode — Auto 10-spd, 8 cyl, 5.3 L | 14.7 L/100 km (16 mpg) | 11.2 L/100 km (21 mpg) | 13.1 L/100 km (18 mpg) |
| Sierra 2WD with Sport Mode — Auto 8-spd, 4 cyl, 2.7 L, Turbo | 13.8 L/100 km (17 mpg) | 11.2 L/100 km (21 mpg) | 12.4 L/100 km (19 mpg) |
| Sierra 4WD — Auto 10-spd, 8 cyl, 6.2 L | 15.7 L/100 km (15 mpg) | 12.4 L/100 km (19 mpg) | 14.7 L/100 km (16 mpg) |
Source: U.S. EPA / fueleconomy.gov. Converted to L/100 km for Canadian buyers.
No NHTSA recalls are on file for the 2026 GMC Sierra.
Source: U.S. NHTSA. Canadian-market vehicles can have different recalls — check Transport Canada's recall database. Always confirm recall status for a specific VIN with a dealer.
A 0–100 grade from public NHTSA data — higher means fewer reported problems. Provisional: this model year is new and complaints are still coming in. How it's calculated
NHTSA hasn't published 5-star ratings for this model year.
Source: NHTSA New Car Assessment Program.
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