1991 Buick Century vs 1992 Buick Riviera
| EPA figure | 1991 Buick Century | 1992 Buick Riviera |
|---|---|---|
| Model year | 1991 | 1992 |
| Body · drive | Midsize · Front-Wheel Drive · Gas | Midsize · Front-Wheel Drive · Gas |
| Combined MPG | 22 | 19 |
| City / highway MPG | 19 / 28 | 16 / 24 |
| Fuel a year | $3,050 | $3,550 |
| Tailpipe CO₂ (g/mi) | 404 | 468 |
| Engine | 2.5 L 4-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.