2018 Audi S4 vs 2018 Audi S8
| EPA figure | 2018 Audi S4 | 2018 Audi S8 |
|---|---|---|
| Model year | 2018 | 2018 |
| Body · drive | Compact · All-Wheel Drive · Gas | Midsize · All-Wheel Drive · Gas |
| Combined MPG | 24 | 18 |
| City / highway MPG | 21 / 30 | 14 / 24 |
| Fuel a year | $3,400 | $4,550 |
| Tailpipe CO₂ (g/mi) | 374 | 503 |
| Engine | 3.0 L 6-cyl turbo | 4.0 L 8-cyl turbo |
| Transmission | Automatic (AM-S8) | Automatic (S8) |
▲ marks the better official figure on that line: more range, MPG or MPGe; less fuel cost or CO₂. From fueleconomy.gov.