Comparison Mercedes-Benz SL (R129) SL 320 (231 Hp) Automatic & Porsche 718 Cayman T 2.0 (300 Hp) PDK & Porsche 944 2.7 (165 Hp)
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| Brand: | Mercedes-Benz | Porsche | Porsche |
| Model: | SL | 718 | 944 |
| Generation: | SL (R129) | 718 Cayman | 944 |
| Engine / modification: | SL 320 (231 Hp) Automatic | T 2.0 (300 Hp) PDK | 2.7 (165 Hp) |
| Production start: | 1993 year | 2018 year | 1988 year |
| Production end: | 1995 year | 1989 year | |
| Coupe type: | Roadster | Coupe | |
| Num. of Doors: | 2 | 2 | |
| Num. of seats: | 2 | 2 | |
| Fuel consumption / economy - urban: | 14.4 l/100 km | 10.5 l/100 km | |
| Fuel consumption / economy - extra urban: | 8.5 l/100 km | 6.4 l/100 km | |
| Fuel consumption / economy - combined: | 10 l/100 km | 7.9 l/100 km | |
| Fuel Type: | Petrol (Gasoline) | Petrol (Gasoline) | Petrol (Gasoline) |
| Drag coefficient: | 0.32-0.40 | 0.30 | |
| Fuel tank volume: | 80 l | 54 l | |
| Emission standard: | Euro 1 | EURO VId - TEMP | |
| CO2 emissions: | 180 g/km | ||
| Power: | 231 hp | 300 hp | 165 hp |
| Max power in: | 5600 rpm. | 7500 rpm. | |
| Maximum speed: | 240 km/h | 275 km/h | |
| Acceleration from 0 to 100 km/h: | 8.4 sec | 4.7 sec | |
| Torque: | 315 Nm @ 3750 rpm. | 380 Nm @ 2150-4500 rpm. | |
| Model Engine: | M 104.991 | ||
| Engine position: | Front, longitudinal | Middle, longitudinal | |
| Engine displacement: | 3199 cm3 | 1988 cm3 | |
| Engine oil capacity: | 7 l | ||
| Coolant: | 11.5 l | ||
| Fuel System: | Direct injection | ||
| Aspiration / Turbine: | Turbocharger | ||
| Position of cylinders: | Inline | Boxer | |
| Valvetrain: | DOHC | ||
| Number of cylinders: | 6 | 4 | |
| Number of valves per cylinder: | 4 | 4 | |
| Compression ratio: | 10 | 9.5 | |
| Piston Stroke: | 84 mm | 76.4 mm | |
| Cylinder Bore: | 89.9 mm | 91 mm | |
| Wheel Drive: | Rear wheel drive | Rear wheel drive | |
| Number of Gears (automatic transmission): | 5 | 7 PDK | |
| Length: | 4470 mm | 4379 mm | |
| Width: | 1812 mm | 1801 mm | |
| Width including mirrors: | 1994 mm | ||
| Height: | 1303 mm | 1276 mm | |
| Wheelbase: | 2515 mm | 2475 mm | |
| Front track: | 1535 mm | 1528 mm | |
| Rear (Back) track: | 1523 mm | 1534 mm | |
| Minimum volume of Luggage (trunk): | 265 l | 150 l | |
| Maximum amount of Luggage (trunk): | 275 l | ||
| Max weight: | 2170 kg | 1685 kg | |
| Front brakes: | Ventilated discs | Ventilated discs | |
| Rear brakes: | Disc | Ventilated discs | |
| Kerb Weight: | 1780 kg | 1380 kg | |
| ABS: | yes | ||
| Steering type: | Cone worm with recirculation balls | Steering rack and pinion | |
| Power steering: | Hydraulic Steering | Electric Steering | |
| Minimum turning circle (turning diameter): | 10.7 m | ||
| Tire size: | 225/55 ZR 16 | 235/45 ZR18; 265/45 ZR18 | |
| Wheel rims size: | 8 J x 16 H 2 | 8J x 18; 9.5J x 18 |