2003 Chevrolet Avalanche
6 configurations — EPA fuel economy ratings
| Trim / Variant | City MPG | Hwy MPG | Combined MPG | Fuel | Drive | Engine | Transmission |
|---|---|---|---|---|---|---|---|
| Avalanche 1500 2WD | 12 | 17 | 14 | Regular Gasoline | Rear-Wheel Drive | 5.3L 8-cyl | Automatic 4-spd |
| Avalanche 1500 2WD | 13 | 17 | 14 | Regular Gasoline | Rear-Wheel Drive | 5.3L 8-cyl | Automatic 4-spd |
| Avalanche 1500 4WD | 13 | 17 | 14 | Regular Gasoline | 4-Wheel or All-Wheel Drive | 5.3L 8-cyl | Automatic 4-spd |
| Avalanche 1500 4WD | 12 | 16 | 13 | Regular Gasoline | 4-Wheel or All-Wheel Drive | 5.3L 8-cyl | Automatic 4-spd |
| Avalanche 1500 AWD | 13 | 17 | 14 | Regular Gasoline | 4-Wheel or All-Wheel Drive | 5.3L 8-cyl | Automatic 4-spd |
| Avalanche 1500 AWD | 12 | 16 | 13 | Regular Gasoline | 4-Wheel or All-Wheel Drive | 5.3L 8-cyl | Automatic 4-spd |