On fuel costs these two are nearly tied. Driving 15,000 miles a year with $3.10/gal regular gas, the most efficient 2021 Chevrolet Silverado (21 MPG) costs about $2,214 a year to fuel and the 2021 GMC Sierra (21 MPG) about $2,214.
Your numbers
Change these to match your driving and local prices. Every figure and chart on this page updates.
Fuel cost over 10 years
Chevrolet Silverado
GMC Sierra
Side by side
Chevrolet Silverado
GMC Sierra
$2,214
Your annual fuel cost
$2,214
21 MPG
Combined efficiency
21 MPG
20 MPG
City
20 MPG
23 MPG
Highway
23 MPG
423 g/mi
Tailpipe CO₂ (g/mi)
421 g/mi
4/10
EPA fuel economy score
4/10
4/10
EPA greenhouse gas score
4/10
Gas
Powertrain
Gas
Regular gasoline
Fuel
Regular gasoline
2.7L 4-cyl turbo
Engine / motor
2.7L 4-cyl turbo
8-speed automatic
Transmission
8-speed automatic
RWD
Drivetrain
RWD
✓ marks the better value. EPA scores run 1–10 (10 is best). Volumes come from the EPA interior volume index and aren't published for every body style.
Chevrolet Silverado vs GMC Sierra across model years
Chevrolet Silverado
GMC Sierra
Annual fuel cost of the most efficient configuration of each model year, at your prices. Click a point to open that year.
How they differ
Among 17 2021 full-size pickups, the Chevrolet Silverado ranks 9th and the GMC Sierra 8th for lowest fuel cost.
Frequently asked questions
How much does it cost to fuel the 2021 Chevrolet Silverado vs. the GMC Sierra per year?
At 15,000 miles a year with $3.10/gal regular gas, about $2,214 for the Chevrolet Silverado and $2,214 for the GMC Sierra.