1990 Buick Century vs 1991 Buick Riviera
| EPA figure | 1990 Buick Century | 1991 Buick Riviera |
|---|---|---|
| Model year | 1990 | 1991 |
| Body · drive | Midsize · Front-Wheel Drive · Gas | Midsize · Front-Wheel Drive · Gas |
| Combined MPG | 20 | 19 |
| City / highway MPG | 18 / 25 | 16 / 24 |
| Fuel a year | $3,350 | $3,550 |
| Tailpipe CO₂ (g/mi) | 444 | 468 |
| Engine | 3.3 L 6-cyl | 3.8 L 6-cyl |
| Transmission | Automatic 3-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.