1989 Buick Century vs 1990 Buick Riviera
| EPA figure | 1989 Buick Century | 1990 Buick Riviera |
|---|---|---|
| Model year | 1989 | 1990 |
| Body · drive | Midsize · Front-Wheel Drive · Gas | Midsize · Front-Wheel Drive · Gas |
| Combined MPG | 21 | 19 |
| City / highway MPG | 18 / 26 | 16 / 25 |
| Fuel a year | $3,200 | $3,550 |
| Tailpipe CO₂ (g/mi) | 423 | 468 |
| Engine | 2.8 L 6-cyl | 3.8 L 6-cyl |
| Transmission | Automatic 4-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.