Mercedes-Benz S550 vs Porsche 911
Side-by-side comparison from manufacturer specifications, NHTSA safety data, and live dealer listings.
Vehicles
Vehicles
2026 Porsche 911
Overview
| Spec | Mercedes-Benz S550S 550 | Porsche 911Carrera |
|---|---|---|
| Selected trim | S 550 | Carrera |
| Body style | Sedan | Coupe |
| Drivetrain | rear wheel drive | rear wheel drive |
| Fuel type | premium unleaded (required) | premium unleaded (required) |
| Transmission | 9-speed shiftable automatic | 8-speed automated manual |
| Engine type | gas | gas |
| Model year | 2017 | 2026 |
Pricing & market
| Spec | Mercedes-Benz S550S 550 | Porsche 911Carrera |
|---|---|---|
| MSRP | $96,600 (best) | $135,500 |
| Lowest listing price | — | $77,590 (best) |
| Median listing price | — | $181,729 (best) |
| Highest listing price | — | $470,144 (best) |
| For sale now | 0 | 37 (best) |
Fuel economy & range
| Spec | Mercedes-Benz S550S 550 | Porsche 911Carrera |
|---|---|---|
| Combined MPG | 21 MPG | 21 MPG |
| City MPG | 18 MPG | 18 MPG |
| Highway MPG | 26 MPG (best) | 25 MPG |
| Fuel tank | 23 gal (best) | 16.6 gal |
Performance
| Spec | Mercedes-Benz S550S 550 | Porsche 911Carrera |
|---|---|---|
| Horsepower | 449 hp (best) | 388 hp |
| Torque | 516 lb-ft (best) | 331 lb-ft |
| Engine size | 4.7 L (best) | 3 L |
| Cylinders | V8 | flat 6 |
Size & capability
| Spec | Mercedes-Benz S550S 550 | Porsche 911Carrera |
|---|---|---|
| Seating | 5 seats (best) | 2 seats |
| Doors | 4 (best) | 2 |
| Cargo volume | 16.3 cu ft (best) | 4.8 cu ft |
| Payload | — | 758 lbs (best) |
| Curb weight | 4,663 lbs | 3,342 lbs (best) |
| Wheelbase | 124.6 in (best) | 96.5 in |
| Length | 206.5 in (best) | 178.8 in |
| Width | — | 72.9 in (best) |
| Height | 58.7 in (best) | 51.3 in |
Safety & recalls
| Spec | Mercedes-Benz S550S 550 | Porsche 911Carrera |
|---|---|---|
| Open recalls (YMM scope) | 10 | 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 | Mercedes-Benz S550 | Porsche 911 |
|---|---|---|
| 1 | S 550 $96,600 MSRP(Currently comparing) | Carrera $135,500 MSRP(Currently comparing) |
| 2 | S 550 $131,400 MSRP | Carrera $149,400 MSRP |
| 3 | S 550 4MATIC $99,600 MSRP | Carrera T $148,000 MSRP |
| 4 | S 550 4MATIC $122,750 MSRP | Carrera T $161,900 MSRP |
| 5 | AMG S 63 4MATIC $164,750 MSRP | Carrera S $156,200 MSRP |
| 6 | — | Carrera S $170,100 MSRP |
| 7 | — | Carrera 4S $164,500 MSRP |
| 8 | — | Carrera 4S $178,400 MSRP |
| 9 | — | Targa 4S $180,200 MSRP |
| 10 | — | Carrera GTS $181,000 MSRP |
| 11 | — | Carrera GTS $194,900 MSRP |
| 12 | — | Carrera 4 GTS $189,300 MSRP |
| 13 | — | Carrera 4 GTS $203,300 MSRP |
| 14 | — | Targa 4 GTS $203,300 MSRP |
| 15 | — | GT3 $235,800 MSRP |
| 16 | — | GT3 with Touring Package $235,800 MSRP |
| 17 | — | Spirit 70 $254,300 MSRP |
| 18 | — | Turbo S $270,300 MSRP |
| 19 | — | Turbo S $284,300 MSRP |
| 20 | — | GT3 90 F.A. Porsche $387,000 MSRP |
Live inventory
Porsche 91137 for sale
See all
Certified2018 Porsche 911
Carrera S
Night Blue Metallic•Black45,667 mi$113,000Porsche Charlotte Northlake
Charlotte, NC
Used2025 Porsche 911
Carrera 4 GTS
black•black2,398 mi$202,693Land Rover St Petersburg
St. Petersburg, FL
New2026 Porsche 911
Carrera
Black•Black256 mi$181,729Porsche Oklahoma City
Oklahoma City, OK
Used2013 Porsche 911
Carrera 4S
Platinum Silver Metallic•Yachting Blue23,123 mi$84,299Feldman Chevrolet of New Hudson
New Hudson, MI
Certified2025 Porsche 911
Carrera S
Gentian Blue Metallic•Black/Limestone Beige47 mi$197,999Porsche Conshohocken
Conshohocken, PA
Certified2026 Porsche 911
Carrera GTS
Jet Black Metallic•Black37 mi$224,999Porsche Conshohocken
Conshohocken, PA
Mercedes-Benz S550 vs Porsche 911 FAQ
- Which is better: 2017 Mercedes-Benz S550 or 2026 Porsche 911?
- It depends on priorities. OpenDealer compares 2017 Mercedes-Benz S550 vs 2026 Porsche 911 on MSRP, fuel economy, horsepower, seating, towing, NHTSA safety ratings, and live market prices so you can weigh the tradeoffs.
- Which costs less: 2017 Mercedes-Benz S550 or 2026 Porsche 911?
- Based on starting MSRP, the 2017 Mercedes-Benz S550 starts lower at $96,600. Live Porsche 911 listings start at $77,590.
- Which has better startingMsrp: 2017 Mercedes-Benz S550 or 2026 Porsche 911?
- The 2017 Mercedes-Benz S550 leads on startingMsrp in this comparison (96,600).
- Which has better horsepower: 2017 Mercedes-Benz S550 or 2026 Porsche 911?
- The 2026 Porsche 911 leads on horsepower in this comparison (701).
- Which has better seats: 2017 Mercedes-Benz S550 or 2026 Porsche 911?
- The 2017 Mercedes-Benz S550 leads on seats in this comparison (5).