1991 GMC Sierra 1500 4WD vs 1991 GMC Sonoma 2WD
| EPA figure | 1991 GMC Sierra 1500 4WD | 1991 GMC Sonoma 2WD |
|---|---|---|
| Model year | 1991 | 1991 |
| Body · drive | Pickup · 4-Wheel or All-Wheel Drive · Gas | Pickup · Rear-Wheel Drive · Gas |
| Combined MPG | 13 | 21 |
| City / highway MPG | 11 / 15 | 19 / 26 |
| Fuel a year | $5,150 | $3,200 |
| Tailpipe CO₂ (g/mi) | 684 | 423 |
| Engine | 5.7 L 8-cyl | 2.5 L 4-cyl |
| Transmission | Manual 5-spd | Automatic 4-spd |
▲ marks the better official figure on that line: more range, MPG or MPGe; less fuel cost or CO₂. From fueleconomy.gov.