1991 GMC Sonoma
7 configurations — EPA fuel economy ratings
| Trim / Variant | City MPG | Hwy MPG | Combined MPG | Fuel | Drive | Engine | Transmission |
|---|---|---|---|---|---|---|---|
| Sonoma 2WD | 19 | 26 | 21 | Regular Gasoline | Rear-Wheel Drive | 2.5L 4-cyl | Automatic 4-spd |
| Sonoma 2WD | 15 | 22 | 18 | Regular Gasoline | Rear-Wheel Drive | 4.3L 6-cyl | Manual 5-spd |
| Sonoma 2WD | 16 | 22 | 18 | Regular Gasoline | Rear-Wheel Drive | 4.3L 6-cyl | Automatic 4-spd |
| Sonoma 2WD | 17 | 23 | 19 | Regular Gasoline | Rear-Wheel Drive | 2.8L 6-cyl | Manual 5-spd |
| Sonoma 2WD | 21 | 25 | 22 | Regular Gasoline | Rear-Wheel Drive | 2.5L 4-cyl | Manual 5-spd |
| Sonoma 4WD | 15 | 20 | 17 | Regular Gasoline | 4-Wheel or All-Wheel Drive | 4.3L 6-cyl | Automatic 4-spd |
| Sonoma 4WD | 14 | 19 | 16 | Regular Gasoline | 4-Wheel or All-Wheel Drive | 4.3L 6-cyl | Manual 5-spd |