1991 GMC Sierra 2500 4WD vs 1991 GMC Sonoma 4WD
| EPA figure | 1991 GMC Sierra 2500 4WD | 1991 GMC Sonoma 4WD |
|---|---|---|
| Model year | 1991 | 1991 |
| Body · drive | Pickup · 4-Wheel or All-Wheel Drive · Diesel | Pickup · 4-Wheel or All-Wheel Drive · Gas |
| Combined MPG | 18 | 17 |
| City / highway MPG | 17 / 21 | 15 / 20 |
| Fuel a year | $5,300 | $3,950 |
| Tailpipe CO₂ (g/mi) | 566 | 523 |
| Engine | 6.2 L 8-cyl | 4.3 L 6-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.