Comparison Opel Signum (facelift 2005) 2.8i V6 24V Turbo (250 Hp) & BMW 3 Series Sedan (E46, facelift 2001) 320i (170 Hp) Automatic
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| Brand: | Opel | BMW |
| Model: | Signum | 3 Series |
| Generation: | Signum (facelift 2005) | 3 Series Sedan (E46, facelift 2001) |
| Engine / modification: | 2.8i V6 24V Turbo (250 Hp) | 320i (170 Hp) Automatic |
| Production start: | 2006 year | 2001 year |
| Production end: | 2008 year | 2005 year |
| Coupe type: | Hatchback | Sedan |
| Num. of Doors: | 5 | 4 |
| Num. of seats: | 5 | 5 |
| Fuel consumption / economy - urban: | 15.7 l/100 km | 13.1 l/100 km |
| Fuel consumption / economy - extra urban: | 7.6 l/100 km | 7.3 l/100 km |
| Fuel consumption / economy - combined: | 9.4 l/100 km | |
| Fuel Type: | Petrol (Gasoline) | Petrol (Gasoline) |
| Drag coefficient: | 0.32 | |
| Fuel tank volume: | 60 l | 63 l |
| Power: | 250 hp | 170 hp |
| Max power in: | 5500 rpm. | 6100 rpm. |
| Maximum speed: | 250 km/h | 223 km/h |
| Acceleration from 0 to 100 km/h: | 7.2 sec | 9.3 sec |
| Torque: | 350 Nm | 210 Nm @ 3500 rpm. |
| Model Engine: | M54B22 | |
| Engine position: | Front, transverse | Front, longitudinal |
| Engine displacement: | 2792 cm3 | 2171 cm3 |
| Engine oil capacity: | 6.5 l | |
| Coolant: | 8.4 l | |
| Fuel System: | Multi-point injection | Multi-point injection |
| Aspiration / Turbine: | Turbocharging | |
| Position of cylinders: | V engine | Inline |
| Valvetrain: | DOHC | |
| Number of cylinders: | 6 | 6 |
| Number of valves per cylinder: | 4 | 4 |
| Compression ratio: | 9.5 | 10.8 |
| Piston Stroke: | 74.8 mm | 72 mm |
| Cylinder Bore: | 89 mm | 80 mm |
| Wheel Drive: | Front wheel drive | Rear wheel drive |
| Number of Gears (automatic transmission): | 6 | 5 |
| Number of Gears (manual transmission): | 6 | |
| Length: | 4651 mm | 4470 mm |
| Width: | 1798 mm | 1740 mm |
| Height: | 1466 mm | 1420 mm |
| Wheelbase: | 2830 mm | 2725 mm |
| Front track: | 1536 mm | 1480 mm |
| Rear (Back) track: | 1525 mm | 1495 mm |
| Minimum volume of Luggage (trunk): | 365 l | 410 l |
| Maximum amount of Luggage (trunk): | 1410 l | |
| Front suspension: | Independent, spring | The depreciated rack |
| Rear suspension: | Independent, spring | Helical spring |
| Max weight: | 2175 kg | 1890 kg |
| Front brakes: | Disc | Ventilated discs |
| Rear brakes: | Disc | Ventilated discs |
| Kerb Weight: | 1580 kg | 1390 kg |
| ABS: | yes | |
| Steering type: | Steering rack and pinion | |
| Power steering: | Hydraulic Steering | |
| Tire size: | 235/40 R18 | 195/65 R15 |
| Wheel rims size: | R18 | 6.5J x 15 |