2025 Audi RS 3 vs 2026 Mercedes-Benz S500 4matic
| EPA figure | 2025 Audi RS 3 | 2026 Mercedes-Benz S500 4matic |
|---|---|---|
| Model year | 2025 | 2026 |
| Body · drive | Subcompact · All-Wheel Drive · Gas | Large · All-Wheel Drive · Hybrid |
| Combined MPG | 23 | 23 |
| City / highway MPG | 20 / 29 | 20 / 29 |
| Fuel a year | $3,550 | $3,550 |
| Tailpipe CO₂ (g/mi) | 385 | 380 |
| Engine | 2.5 L 5-cyl turbo | 3.0 L 6-cyl turbo supercharged |
| Transmission | Automatic (AM-S7) | Automatic 9-spd |
▲ marks the better official figure on that line: more range, MPG or MPGe; less fuel cost or CO₂. From fueleconomy.gov.