2003 GMC Sierra
Standard Pickup Trucks 2WD · Rear-Wheel Drive · Regular Gasoline
16
Combined MPG
14
City MPG
19
Highway MPG
—
Safety Rating
📊 Key Statistics — 2003 GMC Sierra
- Combined fuel economy: 16 MPG (14 city / 19 highway)
- Annual fuel cost: $3,750
- CO₂ emissions: 555 grams/mile
Specifications
| Make | GMC · Company Profile |
| Model | Sierra |
| Year | 2003 |
| Class | Standard Pickup Trucks 2WD |
| Drive | Rear-Wheel Drive |
| Transmission | Automatic 4-spd |
| Fuel Type | Regular Gasoline |
| Cylinders | 6 |
| Engine Size | 4.3L |
Annual Fuel Cost
| Annual Fuel Cost (15K mi, $3.50/gal) | $3281 |
| Monthly Fuel Cost | $273 |
| Cost per Mile (fuel only) | $22¢ |
Based on 15,000 miles/year and $3.50/gallon national average.
Compare This Car
GMC Sierra — MPG by Year
| Year | MPG | |
|---|---|---|
| 2026 | 68 | ↑ |
| 2025 | 64 | ↑ |
| 2024 | 25 | ↑ |
| 2023 | 26 | ↑ |
| 2022 | 26 | ↑ |
| 2021 | 26 | ↑ |
| 2020 | 26 | ↑ |
| 2019 | 21 | ↑ |
| 2018 | 20 | ↑ |
| 2017 | 20 | ↑ |
Similar 2003 Standard Pickup Trucks 2WD
- Mazda B Pickup — 23 MPG
- Ford Ranger — 23 MPG
- Toyota Tacoma — 22 MPG
- Nissan Frontier — 21 MPG
- Ford Explorer — 17 MPG
- Dodge Dakota Pickup — 17 MPG
- Toyota Tundra — 16 MPG
- Ford F150 — 16 MPG