Mercedes-Benz C63 AMG S vs Porsche 718 Cayman
Side-by-side comparison from manufacturer specifications, NHTSA safety data, and live dealer listings.
Vehicles
Vehicles
2025 Porsche 718 Cayman
Overview
| Spec | Mercedes-Benz C63 AMG SAMG C 63 S | Porsche 718 Cayman718 Cayman Coupe |
|---|---|---|
| Selected trim | AMG C 63 S | 718 Cayman Coupe |
| Body style | Coupe | Coupe |
| Drivetrain | rear wheel drive | rear wheel drive |
| Fuel type | premium unleaded (required) | premium unleaded (required) |
| Transmission | 9-speed shiftable automatic | 7-speed automated manual |
| Engine type | gas | gas |
| Model year | 2023 | 2025 |
Pricing & market
| Spec | Mercedes-Benz C63 AMG SAMG C 63 S | Porsche 718 Cayman718 Cayman Coupe |
|---|---|---|
| MSRP | $81,850 | $72,800 (best) |
| Lowest listing price | — | $54,739 (best) |
| Median listing price | — | $114,999 (best) |
| Highest listing price | — | $189,900 (best) |
| For sale now | 0 | 3 (best) |
Fuel economy & range
| Spec | Mercedes-Benz C63 AMG SAMG C 63 S | Porsche 718 Cayman718 Cayman Coupe |
|---|---|---|
| Combined MPG | 19 MPG | 24 MPG (best) |
| City MPG | 16 MPG | 21 MPG (best) |
| Highway MPG | 26 MPG | 27 MPG (best) |
| Fuel tank | 17.4 gal (best) | 14.2 gal |
Performance
| Spec | Mercedes-Benz C63 AMG SAMG C 63 S | Porsche 718 Cayman718 Cayman Coupe |
|---|---|---|
| Horsepower | 503 hp (best) | 300 hp |
| Torque | 516 lb-ft (best) | 280 lb-ft |
| Engine size | 4 L (best) | 2 L |
| Cylinders | V8 | flat 4 |
Size & capability
| Spec | Mercedes-Benz C63 AMG SAMG C 63 S | Porsche 718 Cayman718 Cayman Coupe |
|---|---|---|
| Seating | 4 seats (best) | 2 seats |
| Doors | 2 | 2 |
| Cargo volume | 10.5 cu ft | 15 cu ft (best) |
| Payload | — | 611 lbs (best) |
| Curb weight | 4,123 lbs | 3,104 lbs (best) |
| Ground clearance | 3.5 in (best) | — |
| Wheelbase | 111.8 in (best) | 97.4 in |
| Length | 187.1 in (best) | 172.4 in |
| Width | 71.3 in (best) | 70.9 in |
| Height | 55.3 in (best) | 51 in |
Safety & recalls
| Spec | Mercedes-Benz C63 AMG SAMG C 63 S | Porsche 718 Cayman718 Cayman Coupe |
|---|---|---|
| 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 | Mercedes-Benz C63 AMG S | Porsche 718 Cayman |
|---|---|---|
| 1 | AMG C 63 S $81,850 MSRP(Currently comparing) | 718 Cayman Coupe $72,800 MSRP(Currently comparing) |
| 2 | AMG C 63 S $90,000 MSRP | Style Edition $79,200 MSRP |
| 3 | — | S $84,800 MSRP |
| 4 | — | GTS 4.0 $99,700 MSRP |
| 5 | — | GT4 RS $164,200 MSRP |
Live inventory
Porsche 718 Cayman3 for sale
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Used2017 Porsche 718 Cayman
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bodyseating48,960 mi$54,739Lake City Chrysler Dodge Jeep Ram
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Certified2024 Porsche 718 Cayman
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Guards Red•Black6,437 mi$114,999Porsche Cary
Cary, NC
Used2025 Porsche 718 Cayman
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Shark Blue•Black2,075 mi$189,900Mercedes-Benz of St. Petersburg
Pinellas Park, FL
Mercedes-Benz C63 AMG S vs Porsche 718 Cayman FAQ
- Which is better: 2023 Mercedes-Benz C63 AMG S or 2025 Porsche 718 Cayman?
- It depends on priorities. OpenDealer compares 2023 Mercedes-Benz C63 AMG S vs 2025 Porsche 718 Cayman on MSRP, fuel economy, horsepower, seating, towing, NHTSA safety ratings, and live market prices so you can weigh the tradeoffs.
- Which costs less: 2023 Mercedes-Benz C63 AMG S or 2025 Porsche 718 Cayman?
- Based on starting MSRP, the 2025 Porsche 718 Cayman starts lower at $72,800. Live Porsche 718 Cayman listings start at $54,739.
- Which has better startingMsrp: 2023 Mercedes-Benz C63 AMG S or 2025 Porsche 718 Cayman?
- The 2025 Porsche 718 Cayman leads on startingMsrp in this comparison (72,800).
- Which has better combinedMpg: 2023 Mercedes-Benz C63 AMG S or 2025 Porsche 718 Cayman?
- The 2025 Porsche 718 Cayman leads on combinedMpg in this comparison (24).
- Which has better horsepower: 2023 Mercedes-Benz C63 AMG S or 2025 Porsche 718 Cayman?
- The 2023 Mercedes-Benz C63 AMG S leads on horsepower in this comparison (503).
- Which has better seats: 2023 Mercedes-Benz C63 AMG S or 2025 Porsche 718 Cayman?
- The 2023 Mercedes-Benz C63 AMG S leads on seats in this comparison (4).