Audi A8 Quattro vs Mercedes-Benz S63 AMG
Side-by-side comparison from manufacturer specifications, NHTSA safety data, and live dealer listings.
Vehicles
Vehicles
2021 Mercedes-Benz S63 AMG
Overview
| Spec | Audi A8 QuattroL | Mercedes-Benz S63 AMGAMG S 63 |
|---|---|---|
| Selected trim | L | AMG S 63 |
| Body style | Sedan | Coupe |
| Drivetrain | all wheel drive | all wheel drive |
| Fuel type | premium unleaded (required) | premium unleaded (required) |
| Transmission | 8-speed shiftable automatic | 9-speed shiftable automatic |
| Engine type | mild hybrid | gas |
| Model year | 2026 | 2021 |
Pricing & market
| Spec | Audi A8 QuattroL | Mercedes-Benz S63 AMGAMG S 63 |
|---|---|---|
| MSRP | $95,100 (best) | $173,100 |
| For sale now | 0 | 0 |
Fuel economy & range
| Spec | Audi A8 QuattroL | Mercedes-Benz S63 AMGAMG S 63 |
|---|---|---|
| Combined MPG | 22 MPG (best) | 19 MPG |
| City MPG | 19 MPG (best) | 16 MPG |
| Highway MPG | 27 MPG (best) | 26 MPG |
| Fuel tank | 21.7 gal (best) | 21.1 gal |
Performance
| Spec | Audi A8 QuattroL | Mercedes-Benz S63 AMGAMG S 63 |
|---|---|---|
| Horsepower | 335 hp | 603 hp (best) |
| Torque | 369 lb-ft | 664 lb-ft (best) |
| Engine size | 3 L | 4 L (best) |
| Cylinders | V6 | V8 |
Size & capability
| Spec | Audi A8 QuattroL | Mercedes-Benz S63 AMGAMG S 63 |
|---|---|---|
| Seating | 5 seats (best) | 4 seats |
| Doors | 4 (best) | 2 |
| Cargo volume | 12.5 cu ft | 14.1 cu ft (best) |
| Payload | 1,113 lbs (best) | — |
| Curb weight | 4,773 lbs | 4,586 lbs (best) |
| Ground clearance | — | 4.9 in (best) |
| Wheelbase | 123.1 in (best) | 115.9 in |
| Length | 209.5 in (best) | 198.9 in |
| Width | 76.6 in (best) | 74.8 in |
| Height | 58.3 in (best) | 56 in |
Safety & recalls
| Spec | Audi A8 QuattroL | Mercedes-Benz S63 AMGAMG S 63 |
|---|---|---|
| Open recalls (YMM scope) | None reported | None reported |
Highlighted values indicate the better figure for that spec when a clear winner exists. Specs reflect the selected trim for each vehicle. Drag a vehicle header to reorder columns. MSRP and specifications are manufacturer data; listing prices and inventory come from live dealer listings. Safety ratings are from NHTSA.
Trim overview
All available trims with MSRP. The trim selected above is highlighted; comparison specs use that selection.
| Trim | Audi A8 Quattro | Mercedes-Benz S63 AMG |
|---|---|---|
| 1 | L $95,100 MSRP(Currently comparing) | AMG S 63 $173,100 MSRP(Currently comparing) |
| 2 | — | AMG S 63 $185,400 MSRP |