BMW M4 vs Mercedes-Benz SL450
Side-by-side comparison from manufacturer specifications, NHTSA safety data, and live dealer listings.
Vehicles
Vehicles
2020 Mercedes-Benz SL450
Overview
| Spec | BMW M4Coupe | Mercedes-Benz SL450SL 450 |
|---|---|---|
| Selected trim | Coupe | SL 450 |
| Body style | Coupe | Convertible |
| Drivetrain | rear wheel drive | rear wheel drive |
| Fuel type | premium unleaded (required) | premium unleaded (required) |
| Transmission | 6-speed manual | 9-speed shiftable automatic |
| Engine type | gas | gas |
| Model year | 2027 | 2020 |
Pricing & market
| Spec | BMW M4Coupe | Mercedes-Benz SL450SL 450 |
|---|---|---|
| MSRP | $82,200 (best) | $91,000 |
| Lowest listing price | $103,687 (best) | — |
| Median listing price | $105,440 (best) | — |
| Highest listing price | $107,192 (best) | — |
| For sale now | 2 (best) | 0 |
Fuel economy & range
| Spec | BMW M4Coupe | Mercedes-Benz SL450SL 450 |
|---|---|---|
| Combined MPG | — | 22 MPG (best) |
| City MPG | — | 20 MPG (best) |
| Highway MPG | — | 28 MPG (best) |
| Fuel tank | 15.6 gal | 19.8 gal (best) |
Performance
| Spec | BMW M4Coupe | Mercedes-Benz SL450SL 450 |
|---|---|---|
| Horsepower | 473 hp (best) | 362 hp |
| Torque | 406 lb-ft (best) | 369 lb-ft |
| Engine size | 3 L | 3 L |
| Cylinders | I6 | V6 |
Size & capability
| Spec | BMW M4Coupe | Mercedes-Benz SL450SL 450 |
|---|---|---|
| Seating | 4 seats (best) | 2 seats |
| Doors | 2 | 2 |
| Cargo volume | 15.5 cu ft (best) | 13.5 cu ft |
| Payload | 769 lbs (best) | — |
| Curb weight | 3,829 lbs | 3,825 lbs (best) |
| Ground clearance | 4.7 in (best) | 3.7 in |
| Wheelbase | 112.5 in (best) | 101.8 in |
| Length | 189.1 in (best) | 182.3 in |
| Width | 74.3 in (best) | 73.9 in |
| Height | 55 in (best) | 51.2 in |
Safety & recalls
| Spec | BMW M4Coupe | Mercedes-Benz SL450SL 450 |
|---|---|---|
| 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 M4 | Mercedes-Benz SL450 |
|---|---|---|
| 1 | Coupe $82,200 MSRP(Currently comparing) | SL 450 $91,000 MSRP(Currently comparing) |
| 2 | Competition $86,600 MSRP | — |
| 3 | Competition xDrive $91,700 MSRP | — |
| 4 | Competition xDrive $98,600 MSRP | — |