Comparison Opel Signum (facelift 2005) 2.8i V6 24V Turbo (250 Hp) & Mercedes-Benz SLC (C107) 500 SLC V8 (240 Hp) 4G-TRONIC
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| Brand: | Opel | Mercedes-Benz |
| Model: | Signum | SLC |
| Generation: | Signum (facelift 2005) | SLC (C107) |
| Engine / modification: | 2.8i V6 24V Turbo (250 Hp) | 500 SLC V8 (240 Hp) 4G-TRONIC |
| Production start: | 2006 year | 1980 year |
| Production end: | 2008 year | 1981 year |
| Coupe type: | Hatchback | Coupe |
| Num. of Doors: | 5 | 2 |
| Num. of seats: | 5 | 5 |
| Fuel consumption / economy - urban: | 15.7 l/100 km | 20.7 l/100 km |
| Fuel consumption / economy - extra urban: | 7.6 l/100 km | 10.9 l/100 km |
| Fuel Type: | Petrol (Gasoline) | Petrol (Gasoline) |
| Drag coefficient: | 0.32 | |
| Fuel tank volume: | 60 l | 90 l |
| Power: | 250 hp | 240 hp |
| Max power in: | 5500 rpm. | 5000 rpm. |
| Maximum speed: | 250 km/h | 225 km/h |
| Acceleration from 0 to 100 km/h: | 7.2 sec | 7.8 sec |
| Torque: | 350 Nm | 402 Nm @ 3200 rpm. |
| Model Engine: | M 117 E 50 / 117.960 | |
| Engine position: | Front, transverse | Front, longitudinal |
| Engine displacement: | 2792 cm3 | 4973 cm3 |
| Engine oil capacity: | 9 l | |
| Coolant: | 13.5 l | |
| Fuel System: | Multi-point injection | |
| Aspiration / Turbine: | Turbocharging | |
| Position of cylinders: | V engine | |
| Valvetrain: | SOHC | |
| Number of cylinders: | 6 | 8 |
| Number of valves per cylinder: | 4 | 2 |
| Compression ratio: | 9.5 | 8.8 |
| Piston Stroke: | 74.8 mm | 85 mm |
| Cylinder Bore: | 89 mm | 96.5 mm |
| Wheel Drive: | Front wheel drive | Rear wheel drive |
| Number of Gears (automatic transmission): | 6 | 4 G-TRONIC |
| Number of Gears (manual transmission): | 6 | |
| Length: | 4651 mm | 4750 mm |
| Width: | 1798 mm | 1790 mm |
| Height: | 1466 mm | 1330 mm |
| Wheelbase: | 2830 mm | 2815 mm |
| Front track: | 1536 mm | 1452 mm |
| Rear (Back) track: | 1525 mm | 1440 mm |
| Minimum volume of Luggage (trunk): | 365 l | |
| Maximum amount of Luggage (trunk): | 1410 l | |
| Front suspension: | Independent, spring | |
| Rear suspension: | Independent, spring | |
| Max weight: | 2175 kg | 2005 kg |
| Front brakes: | Disc | Ventilated discs |
| Rear brakes: | Disc | Disc |
| Kerb Weight: | 1580 kg | 1515 kg |
| Steering type: | Cone worm with recirculation balls | |
| Power steering: | Hydraulic Steering | |
| Tire size: | 235/40 R18 | 205/70 R14 |
| Wheel rims size: | R18 | 6.5J x 14 |