Comparison Opel Signum (facelift 2005) 2.8i V6 24V Turbo (250 Hp) Automatic & Mercedes-Benz C-class (W203, facelift 2004) C 230 Kompressor (189 Hp) (USA)
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| Brand: | Opel | Mercedes-Benz |
| Model: | Signum | C-class |
| Generation: | Signum (facelift 2005) | C-class (W203, facelift 2004) |
| Engine / modification: | 2.8i V6 24V Turbo (250 Hp) Automatic | C 230 Kompressor (189 Hp) (USA) |
| Production start: | 2006 year | 2004 year |
| Production end: | 2008 year | 2007 year |
| Coupe type: | Hatchback | Sedan |
| Num. of Doors: | 5 | 4 |
| Num. of seats: | 5 | 5 |
| Fuel consumption / economy - urban: | 17.4 l/100 km | 10.7 l/100 km |
| Fuel consumption / economy - extra urban: | 7.6 l/100 km | 7.8 l/100 km |
| Fuel Type: | Petrol (Gasoline) | Petrol (Gasoline) |
| Drag coefficient: | 0.32 | 0.27 |
| Fuel tank volume: | 60 l | |
| Power: | 250 hp | 189 hp |
| Max power in: | 5500 rpm. | 5800 rpm. |
| Maximum speed: | 247 km/h | |
| Acceleration from 0 to 100 km/h: | 7.6 sec | |
| Torque: | 350 Nm | 260 Nm @ 3500-4000 rpm. |
| Model Engine: | Z28NET | |
| Engine position: | Front, transverse | Front, longitudinal |
| Engine displacement: | 2792 cm3 | 1796 cm3 |
| Engine oil capacity: | 6.0 l | |
| Fuel System: | Multi-point injection | |
| Aspiration / Turbine: | Turbocharging | |
| Position of cylinders: | V engine | Inline |
| Valvetrain: | DOHC | |
| Number of cylinders: | 6 | 4 |
| Number of valves per cylinder: | 4 | 4 |
| Compression ratio: | 9.5 | 8.7 |
| Piston Stroke: | 74.8 mm | |
| Cylinder Bore: | 89 mm | |
| Wheel Drive: | Front wheel drive | Rear wheel drive |
| Number of Gears (automatic transmission): | 6 | |
| Number of Gears (manual transmission): | 6 | |
| Length: | 4651 mm | 4526 mm |
| Width: | 1798 mm | 1728 mm |
| Height: | 1466 mm | 1400 mm |
| Wheelbase: | 2830 mm | 2715 mm |
| Front track: | 1536 mm | 1493 mm |
| Rear (Back) track: | 1525 mm | 1464 mm |
| Minimum volume of Luggage (trunk): | 365 l | 345 l |
| Maximum amount of Luggage (trunk): | 1410 l | |
| Front suspension: | Independent, spring | Independent, Spring McPherson, with stabilizer |
| Rear suspension: | Independent, spring | |
| Max weight: | 2175 kg | |
| Front brakes: | Disc | Ventilated discs |
| Rear brakes: | Disc | Disc |
| Kerb Weight: | 1580 kg | 1475 kg |
| Power steering: | Hydraulic Steering | |
| Minimum turning circle (turning diameter): | 10.76 m | |
| Tire size: | 235/40 R18 | Front wheel tires: 8.5J x 17 |
| Wheel rims size: | R18 | Front wheel rims: 245/40 R17 |