2021 Audi R8 Spyder 2WD vs 2021 Audi S4
| EPA figure | 2021 Audi R8 Spyder 2WD | 2021 Audi S4 |
|---|---|---|
| Model year | 2021 | 2021 |
| Body · drive | Two Seaters · Rear-Wheel Drive · Gas | Compact · All-Wheel Drive · Gas |
| Combined MPG | 17 | 23 |
| City / highway MPG | 14 / 23 | 20 / 28 |
| Fuel a year | $4,850 | $3,550 |
| Tailpipe CO₂ (g/mi) | 528 | 380 |
| Engine | 5.2 L 10-cyl | 3.0 L 6-cyl turbo |
| Transmission | Automatic (AM-S7) | Automatic (S8) |
▲ marks the better official figure on that line: more range, MPG or MPGe; less fuel cost or CO₂. From fueleconomy.gov.