BMW M8 vs Mercedes-Benz SL55 AMG
Side-by-side comparison from manufacturer specifications, NHTSA safety data, and live dealer listings.
Vehicles
Vehicles
2026 Mercedes-Benz SL55 AMG
Overview
| Spec | BMW M8Competition | Mercedes-Benz SL55 AMGAMG SL 55 |
|---|---|---|
| Selected trim | Competition | AMG SL 55 |
| Body style | Coupe | Convertible |
| 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 | gas | gas |
| Model year | 2025 | 2026 |
Pricing & market
| Spec | BMW M8Competition | Mercedes-Benz SL55 AMGAMG SL 55 |
|---|---|---|
| MSRP | $138,800 (best) | $145,250 |
| Lowest listing price | $73,872 (best) | — |
| Median listing price | $88,185 (best) | — |
| Highest listing price | $102,498 (best) | — |
| For sale now | 2 (best) | 0 |
Fuel economy & range
| Spec | BMW M8Competition | Mercedes-Benz SL55 AMGAMG SL 55 |
|---|---|---|
| Combined MPG | 17 MPG (best) | 16 MPG |
| City MPG | 15 MPG (best) | 13 MPG |
| Highway MPG | 22 MPG (best) | 21 MPG |
| Fuel tank | 20.1 gal (best) | 18.5 gal |
Performance
| Spec | BMW M8Competition | Mercedes-Benz SL55 AMGAMG SL 55 |
|---|---|---|
| Horsepower | 617 hp (best) | 469 hp |
| Torque | 553 lb-ft (best) | 516 lb-ft |
| Engine size | 4.4 L (best) | 4 L |
| Cylinders | V8 | V8 |
Size & capability
| Spec | BMW M8Competition | Mercedes-Benz SL55 AMGAMG SL 55 |
|---|---|---|
| Seating | 4 seats | 4 seats |
| Doors | 2 | 2 |
| Cargo volume | 14.8 cu ft (best) | 7.5 cu ft |
| Curb weight | 4,560 lbs | 4,277 lbs (best) |
| Ground clearance | 4.8 in (best) | — |
| Wheelbase | 111.3 in (best) | 106.3 in |
| Length | 191.8 in (best) | 185.2 in |
| Width | 74.9 in | 75.4 in (best) |
| Height | 53.6 in (best) | 53.5 in |
Safety & recalls
| Spec | BMW M8Competition | Mercedes-Benz SL55 AMGAMG SL 55 |
|---|---|---|
| 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 | BMW M8 | Mercedes-Benz SL55 AMG |
|---|---|---|
| 1 | Competition $138,800 MSRP(Currently comparing) | AMG SL 55 $145,250 MSRP(Currently comparing) |
| 2 | Competition $150,000 MSRP | — |
Live inventory
BMW M8 vs Mercedes-Benz SL55 AMG FAQ
- Which is better: 2025 BMW M8 or 2026 Mercedes-Benz SL55 AMG?
- It depends on priorities. OpenDealer compares 2025 BMW M8 vs 2026 Mercedes-Benz SL55 AMG on MSRP, fuel economy, horsepower, seating, towing, NHTSA safety ratings, and live market prices so you can weigh the tradeoffs.
- Which costs less: 2025 BMW M8 or 2026 Mercedes-Benz SL55 AMG?
- Based on starting MSRP, the 2025 BMW M8 starts lower at $138,800. Live BMW M8 listings start at $73,872.
- Which has better startingMsrp: 2025 BMW M8 or 2026 Mercedes-Benz SL55 AMG?
- The 2025 BMW M8 leads on startingMsrp in this comparison (138,800).
- Which has better combinedMpg: 2025 BMW M8 or 2026 Mercedes-Benz SL55 AMG?
- The 2025 BMW M8 leads on combinedMpg in this comparison (17).
- Which has better horsepower: 2025 BMW M8 or 2026 Mercedes-Benz SL55 AMG?
- The 2025 BMW M8 leads on horsepower in this comparison (617).