Comparison BMW 3 Series Sedan (E90) 318i (129 Hp) Automatic & Opel Astra J 1.7 CDTI (125 Hp) & Opel Vectra C (facelift 2005) 1.8i 16V (140 Hp) Automatic
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| Brand: | BMW | Opel | Opel |
| Model: | 3 Series | Astra | Vectra |
| Generation: | 3 Series Sedan (E90) | Astra J | Vectra C (facelift 2005) |
| Engine / modification: | 318i (129 Hp) Automatic | 1.7 CDTI (125 Hp) | 1.8i 16V (140 Hp) Automatic |
| Production start: | 2005 year | 2009 year | 2006 year |
| Production end: | 2007 year | 2012 year | 2008 year |
| Coupe type: | Sedan | Hatchback | Sedan |
| Powertrain Architecture: | Internal Combustion engine | ||
| Num. of Doors: | 4 | 5 | 4 |
| Num. of seats: | 5 | 5 | 5 |
| Fuel consumption / economy - urban: | 11.2 l/100 km | 5.7 l/100 km | 10.8 l/100 km |
| Fuel consumption / economy - extra urban: | 6 l/100 km | 4.2 l/100 km | 5.9 l/100 km |
| Fuel consumption / economy - combined: | 7.9 l/100 km | 4.7 l/100 km | 7.7 l/100 km |
| Fuel Type: | Petrol (Gasoline) | Diesel | Petrol (Gasoline) |
| Drag coefficient: | 0.31 | ||
| Fuel tank volume: | 63 l | 56 l | 61 l |
| Emission standard: | Euro 5 | ||
| CO2 emissions: | 190 g/km | 125 g/km | |
| Power: | 129 hp | 125 hp | 140 hp |
| Max power in: | 5750 rpm. | 4000 rpm. | 6300 rpm. |
| Maximum speed: | 206 km/h | 195 km/h | 203 km/h |
| Acceleration from 0 to 100 km/h: | 11 sec | 11.5 sec | 11.2 sec |
| Torque: | 180 Nm @ 3250 rpm. | 280 Nm @ 2300 rpm. | 175 Nm @ 3800 rpm. |
| Model Engine: | N46B20 | A17DTR | Z18XER |
| Engine position: | Front, longitudinal | Front, transverse | Front, transverse |
| Engine displacement: | 1995 cm3 | 1686 cm3 | 1796 cm3 |
| Engine oil capacity: | 4.3 l | 4.0 l | 4.3 l |
| Coolant: | 7.2 l | ||
| Fuel System: | Multi-point indirect injection | Diesel Commonrail | Multi-point injection |
| Aspiration / Turbine: | Naturally aspirated engine | Turbo / Intercooler (Turbocharging / Intercooler) | |
| Position of cylinders: | Inline | Inline | Inline |
| Valvetrain: | DOHC | DOHC | |
| Number of cylinders: | 4 | 4 | 4 |
| Number of valves per cylinder: | 4 | 4 | 4 |
| Compression ratio: | 10.5 | 18 | 10.5 |
| Piston Stroke: | 90 mm | 86 mm | 88.2 mm |
| Cylinder Bore: | 84 mm | 79 mm | 80.5 mm |
| Wheel Drive: | Rear wheel drive | Front wheel drive | Front wheel drive |
| Number of Gears (automatic transmission): | 6 | 5 | |
| Number of Gears (manual transmission): | 6 | ||
| Length: | 4520 mm | 4419 mm | 4611 mm |
| Width: | 1817 mm | 1814 mm | 1798 mm |
| Width including mirrors: | 2013 mm | 2013 mm | |
| Height: | 1421 mm | 1510 mm | 1460 mm |
| Wheelbase: | 2760 mm | 2685 mm | 2700 mm |
| Front track: | 1500 mm | 1541 mm | 1536 mm |
| Rear (Back) track: | 1513 mm | 1551 mm | 1525 mm |
| Ride height(clearance): | 160 mm | ||
| Front overhang: | 755 mm | ||
| Rear overhang: | 1005 mm | ||
| Minimum volume of Luggage (trunk): | 460 l | 370 l | 500 l |
| Maximum amount of Luggage (trunk): | 1235 l | 1050 l | |
| Front suspension: | Independent, Spring McPherson, with stabilizer | The depreciated rack | |
| Rear suspension: | Independent, spring multi-link with stabilizer | Several levers and rods | |
| Max weight: | 1910 kg | 2065 kg | 1870 kg |
| Front brakes: | Ventilated discs | Ventilated discs | Ventilated discs |
| Rear brakes: | Disc | Disc | Disc |
| Kerb Weight: | 1465 kg | 1515 kg | 1395 kg |
| ABS: | yes | yes | |
| Steering type: | Steering rack and pinion | Steering rack and pinion | Steering rack and pinion |
| Power steering: | Hydraulic Steering | ||
| Max. roof load: | 75 kg | ||
| Permitted trailer load with brakes (8%): | 1600 kg | ||
| Minimum turning circle (turning diameter): | 11.4 m | ||
| Permitted trailer load with brakes (12%): | 1400 kg | ||
| Permitted trailer load without brakes: | 695 kg | ||
| Permitted towbar download: | 75 kg | ||
| Tire size: | 205/55 R16 | 215/60 R16 | 195/65 R15 |
| Wheel rims size: | 7J x 16 | R16 | 6.5J x 15 |