2026 Mercedes-Benz S500 4matic vs 2027 Audi A8 quattro
| EPA figure | 2026 Mercedes-Benz S500 4matic | 2027 Audi A8 quattro |
|---|---|---|
| Model year | 2026 | 2027 |
| Body · drive | Large · All-Wheel Drive · Hybrid | Large · All-Wheel Drive · Hybrid |
| Combined MPG | 23 | 22 |
| City / highway MPG | 20 / 29 | 19 / 27 |
| Fuel a year | $3,550 | $3,750 |
| Tailpipe CO₂ (g/mi) | 380 | 414 |
| Engine | 3.0 L 6-cyl turbo supercharged | 3.0 L 6-cyl turbo |
| Transmission | Automatic 9-spd | Automatic (S8) |
▲ marks the better official figure on that line: more range, MPG or MPGe; less fuel cost or CO₂. From fueleconomy.gov.