Comparison Mercedes-Benz W124 (facelift 1989) 250 D CAT (90 Hp) & Porsche Cayman (987c, facelift 2009) S 3.4 (320 Hp) PDK
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| Brand: | Mercedes-Benz | Porsche |
| Model: | W124 | Cayman |
| Generation: | W124 (facelift 1989) | Cayman (987c, facelift 2009) |
| Engine / modification: | 250 D CAT (90 Hp) | S 3.4 (320 Hp) PDK |
| Production start: | 1989 year | 2009 year |
| Production end: | 1993 year | 2012 year |
| Coupe type: | Sedan | Coupe |
| Num. of Doors: | 4 | 2 |
| Num. of seats: | 5 | 2 |
| Fuel consumption / economy - urban: | 8.9 l/100 km | 14.1 l/100 km |
| Fuel consumption / economy - extra urban: | 5.4 l/100 km | 6.6 l/100 km |
| Fuel consumption / economy - combined: | 9.4 l/100 km | |
| Fuel Type: | Diesel | Petrol (Gasoline) |
| Drag coefficient: | 0.30 | |
| Fuel tank volume: | 70 l | 65 l |
| Emission standard: | Euro 5 | |
| CO2 emissions: | 221 g/km | |
| Power: | 90 hp | 320 hp |
| Max power in: | 4600 rpm. | 7200 rpm. |
| Maximum speed: | 175 km/h | 275 km/h |
| Acceleration from 0 to 100 km/h: | 16.5 sec | 5.1 sec |
| Acceleration from 0 to 200 km/h: | 19.7 sec | |
| Torque: | 158 Nm @ 2600-3100 rpm. | 370 Nm @ 4750 rpm. |
| Stopping distance 100 km/h - 0: | 34.5 m | |
| stopping distance 200 km/h - 0: | 136.4 m | |
| Model Engine: | OM 602 D 25 / 602.912 | MA1.21 |
| Engine position: | Front, longitudinal | Middle, longitudinal |
| Engine displacement: | 2497 cm3 | 3436 cm3 |
| Engine oil capacity: | 7 l | 7.5 l |
| Coolant: | 9.5 l | 23-25 l |
| Fuel System: | Diesel - Standard diesel injection (SDI) | Direct injection |
| Maximum engine speed: | 7500 rpm. | |
| Position of cylinders: | Inline | Boxer |
| Valvetrain: | SOHC | DOHC |
| Number of cylinders: | 5 | 6 |
| Number of valves per cylinder: | 2 | 4 |
| Compression ratio: | 22 | 12.5 |
| Piston Stroke: | 84 mm | 77.5 mm |
| Cylinder Bore: | 87 mm | 97 mm |
| Wheel Drive: | Rear wheel drive | Rear wheel drive |
| Number of Gears (automatic transmission): | 7 | |
| Number of Gears (manual transmission): | 5 | |
| Length: | 4740 mm | 4347 mm |
| Width: | 1740 mm | 1801 mm |
| Width including mirrors: | 1978 mm | |
| Height: | 1428 mm | 1306 mm |
| Wheelbase: | 2800 mm | 2415 mm |
| Front track: | 1501 mm | 1486 mm |
| Rear (Back) track: | 1491 mm | 1528 mm |
| Ride height(clearance): | 126 mm | |
| Minimum volume of Luggage (trunk): | 260 l | |
| Front suspension: | Wishbone | Independent type McPherson |
| Rear suspension: | Multi-link independent | McPherson |
| Max weight: | 1970 kg | 1675 kg |
| Front brakes: | Disc | |
| Rear brakes: | Disc | |
| Kerb Weight: | 1390 kg | 1375 kg |
| Steering type: | Cone worm with recirculation balls | Steering rack and pinion |
| Power steering: | Hydraulic Steering | Hydraulic Steering |
| Max. roof load: | 60 kg | |
| Minimum turning circle (turning diameter): | 11.1 m | |
| Tire size: | Front wheel tires: 195/65 R15 | Front wheel tires: 235/40 ZR 18 |
| Wheel rims size: | Front wheel rims: 6.5J x 15 | Front wheel rims: 8 J x 18 |