BMW 840i vs Mercedes-Benz C63 AMG S
Side-by-side comparison from manufacturer specifications, NHTSA safety data, and live dealer listings.
Vehicles
Vehicles
2023 Mercedes-Benz C63 AMG S
Overview
| Spec | BMW 840i840i | Mercedes-Benz C63 AMG SAMG C 63 S |
|---|---|---|
| Selected trim | 840i | AMG C 63 S |
| Body style | Sedan | Coupe |
| Drivetrain | rear wheel drive | rear wheel drive |
| Fuel type | premium unleaded (recommended) | premium unleaded (required) |
| Transmission | 8-speed shiftable automatic | 9-speed shiftable automatic |
| Engine type | gas | gas |
| Model year | 2026 | 2023 |
Pricing & market
| Spec | BMW 840i840i | Mercedes-Benz C63 AMG SAMG C 63 S |
|---|---|---|
| MSRP | $94,500 | $81,850 (best) |
| For sale now | 0 | 0 |
Fuel economy & range
| Spec | BMW 840i840i | Mercedes-Benz C63 AMG SAMG C 63 S |
|---|---|---|
| Combined MPG | 24 MPG (best) | 19 MPG |
| City MPG | 21 MPG (best) | 16 MPG |
| Highway MPG | 29 MPG (best) | 26 MPG |
| Fuel tank | 18 gal (best) | 17.4 gal |
Performance
| Spec | BMW 840i840i | Mercedes-Benz C63 AMG SAMG C 63 S |
|---|---|---|
| Horsepower | 335 hp | 503 hp (best) |
| Torque | 369 lb-ft | 516 lb-ft (best) |
| Engine size | 3 L | 4 L (best) |
| Cylinders | I6 | V8 |
Size & capability
| Spec | BMW 840i840i | Mercedes-Benz C63 AMG SAMG C 63 S |
|---|---|---|
| Seating | 5 seats (best) | 4 seats |
| Doors | 4 (best) | 2 |
| Cargo volume | 15.5 cu ft (best) | 10.5 cu ft |
| Payload | 1,003 lbs (best) | — |
| Curb weight | 4,180 lbs | 4,123 lbs (best) |
| Ground clearance | 4.8 in (best) | 3.5 in |
| Wheelbase | 119 in (best) | 111.8 in |
| Length | 200.3 in (best) | 187.1 in |
| Width | 76.1 in (best) | 71.3 in |
| Height | 55.4 in (best) | 55.3 in |
Safety & recalls
| Spec | BMW 840i840i | Mercedes-Benz C63 AMG SAMG C 63 S |
|---|---|---|
| Open recalls (YMM scope) | 1 | None reported (best) |
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 840i | Mercedes-Benz C63 AMG S |
|---|---|---|
| 1 | 840i $94,500 MSRP(Currently comparing) | AMG C 63 S $81,850 MSRP(Currently comparing) |
| 2 | 840i $94,500 MSRP | AMG C 63 S $90,000 MSRP |
| 3 | 840i $104,500 MSRP | — |
BMW 840i vs Mercedes-Benz C63 AMG S FAQ
- Which is better: 2026 BMW 840i or 2023 Mercedes-Benz C63 AMG S?
- It depends on priorities. OpenDealer compares 2026 BMW 840i vs 2023 Mercedes-Benz C63 AMG S on MSRP, fuel economy, horsepower, seating, towing, NHTSA safety ratings, and live market prices so you can weigh the tradeoffs.
- Which costs less: 2026 BMW 840i or 2023 Mercedes-Benz C63 AMG S?
- Based on starting MSRP, the 2023 Mercedes-Benz C63 AMG S starts lower at $81,850.
- Which has better startingMsrp: 2026 BMW 840i or 2023 Mercedes-Benz C63 AMG S?
- The 2023 Mercedes-Benz C63 AMG S leads on startingMsrp in this comparison (81,850).
- Which has better combinedMpg: 2026 BMW 840i or 2023 Mercedes-Benz C63 AMG S?
- The 2026 BMW 840i leads on combinedMpg in this comparison (24).
- Which has better horsepower: 2026 BMW 840i or 2023 Mercedes-Benz C63 AMG S?
- The 2023 Mercedes-Benz C63 AMG S leads on horsepower in this comparison (503).
- Which has better seats: 2026 BMW 840i or 2023 Mercedes-Benz C63 AMG S?
- The 2026 BMW 840i leads on seats in this comparison (5).