Chevrolet Silverado vs GMC Sierra
The Chevrolet Silverado is the more efficient of the two: it reaches 70 mpg combined versus 68 mpg for the GMC Sierra, a 2 mpg advantage and costs about $0 less per year to fuel.
Across 4 measured categories, the Chevrolet Silverado leads in 4. Figures are EPA test data, not manufacturer claims.
2015–2026
Chevrolet Silverado
Standard Pickup Trucks 4WD · 300 configurations
2015–2026
GMC Sierra
Standard Pickup Trucks 4WD · 274 configurations
Head-to-head specifications
| Metric | Chevrolet Silverado | GMC Sierra |
|---|---|---|
| Best combined MPG | 70 mpg ✓ | 68 mpg |
| Best city MPG | 78 mpg ✓ | 75 mpg |
| Best highway MPG | 63 mpg ✓ | 61 mpg |
| Lowest annual fuel costEPA estimate at 15,000 miles per year | $1,100 | $1,100 |
| Lowest CO2 output | 383 g/mi ✓ | 392 g/mi |
| Engines offered | SIDI, w/ Sport and Off Road Mode, 3.0, SIDI; FFV | SIDI, 3.0, SIDI; FFV, SIDI; with Sport Mode |
| Transmissions | Automatic (A1), Automatic 10-spd, Automatic 8-spd | Automatic (A1), Automatic 10-spd, Automatic 8-spd |
| Drivetrains | 4-Wheel Drive, Rear-Wheel Drive, All-Wheel Drive | 4-Wheel Drive, Rear-Wheel Drive |
| Fuel types | Electricity, Regular, Diesel | Electricity, Regular, Diesel |
| EPA class | Standard Pickup Trucks 4WD | Standard Pickup Trucks 4WD |
| Years covered | 2015–2026 | 2015–2026 |
| Configurations on record | 300 | 274 |
Source: EPA fuel economy records via fueleconomy.gov. Best-case values across all recorded configurations for each model.
Silverado vs Sierra: common questions
Which is better on gas, the Chevrolet Silverado or the GMC Sierra?
The Chevrolet Silverado is the more efficient of the two: it reaches 70 mpg combined versus 68 mpg for the GMC Sierra, a 2 mpg advantage and costs about $0 less per year to fuel.
Which costs less to run per year?
By EPA estimates at 15,000 miles a year, the GMC Sierra runs about $1,100 a year in fuel at its most efficient configuration, versus about $1,100 for the Chevrolet Silverado — a difference of roughly $0 per year.
What engines do the Silverado and Sierra offer?
Chevrolet Silverado: SIDI, w/ Sport and Off Road Mode, 3.0, SIDI; FFV. GMC Sierra: SIDI, 3.0, SIDI; FFV, SIDI; with Sport Mode.
Are they in the same vehicle class?
Yes — the EPA classifies both the Chevrolet Silverado and the GMC Sierra as Standard Pickup Trucks 4WD, so they compete directly.
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