2011 Audi S4 vs 2011 Audi S6
| EPA figure | 2011 Audi S4 | 2011 Audi S6 |
|---|---|---|
| Model year | 2011 | 2011 |
| Body · drive | Compact · All-Wheel Drive · Gas | Midsize · All-Wheel Drive · Gas |
| Combined MPG | 21 | 16 |
| City / highway MPG | 18 / 28 | 14 / 21 |
| Fuel a year | $3,900 | $5,150 |
| Tailpipe CO₂ (g/mi) | 423 | 555 |
| Engine | 3.0 L 6-cyl supercharged | 5.2 L 10-cyl |
| Transmission | Automatic (S7) | Automatic (S6) |
▲ marks the better official figure on that line: more range, MPG or MPGe; less fuel cost or CO₂. From fueleconomy.gov.