Comparison BMW Z4 (E85, facelift 2006) 3.0 si (265 Hp) Automatic & Volkswagen Derby (86) 0.9 (40 Hp) & Opel Astra J 1.4 Turbo (120 Hp) ecoFLEX
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| Brand: | BMW | Volkswagen | Opel |
| Model: | Z4 | Derby | Astra |
| Generation: | Z4 (E85, facelift 2006) | Derby (86) | Astra J |
| Engine / modification: | 3.0 si (265 Hp) Automatic | 0.9 (40 Hp) | 1.4 Turbo (120 Hp) ecoFLEX |
| Production start: | 2006 year | 1977 year | 2009 year |
| Production end: | 2008 year | 1981 year | 2012 year |
| Coupe type: | Cabriolet | Sedan | Hatchback |
| Num. of Doors: | 2 | 5 | |
| Num. of seats: | 2 | 5 | |
| Fuel consumption / economy - urban: | 12.8 l/100 km | 7.1 l/100 km | |
| Fuel consumption / economy - extra urban: | 6.8 l/100 km | 4.6 l/100 km | |
| Fuel consumption / economy - combined: | 9.0 l/100 km | 5.5 l/100 km | |
| Fuel Type: | Petrol (Gasoline) | Petrol (Gasoline) | Petrol (Gasoline) |
| Drag coefficient: | 0.31 | ||
| Fuel tank volume: | 55 l | 56 l | |
| Emission standard: | Euro 5 | ||
| CO2 emissions: | 129 g/km | ||
| Power: | 265 hp | 40 hp | 120 hp |
| Max power in: | 6600 rpm. | 4200-6000 rpm. | |
| Maximum speed: | 250 km/h | ||
| Acceleration from 0 to 100 km/h: | 6.0 sec | ||
| Torque: | 315 Nm @ 2500 rpm. | 200 Nm @ 1850-4200 rpm. | |
| Model Engine: | N52B30 | A14NEL | |
| Engine position: | Front, longitudinal | Front, transverse | |
| Engine displacement: | 2996 cm3 | 1364 cm3 | |
| Engine oil capacity: | 6.5 l | 4.0 l | |
| Fuel System: | Multi-point injection | Multi-point injection | |
| Aspiration / Turbine: | Turbocharging | ||
| Position of cylinders: | Inline | Inline | |
| Valvetrain: | DOHC | ||
| Number of cylinders: | 6 | 4 | |
| Number of valves per cylinder: | 4 | 4 | |
| Compression ratio: | 10.7 | 9.5 | |
| Piston Stroke: | 88 mm | ||
| Cylinder Bore: | 85 mm | ||
| Wheel Drive: | Rear wheel drive | Front wheel drive | |
| Number of Gears (automatic transmission): | 6 | ||
| Number of Gears (manual transmission): | 6 | ||
| Length: | 4091 mm | 4419 mm | |
| Width: | 1781 mm | 1814 mm | |
| Width including mirrors: | 2013 mm | ||
| Height: | 1268 mm | 1510 mm | |
| Wheelbase: | 2495 mm | 2685 mm | |
| Front track: | 1473 mm | 1541 mm | |
| Rear (Back) track: | 1523 mm | 1551 mm | |
| Ride height(clearance): | 160 mm | ||
| Minimum volume of Luggage (trunk): | 300 l | 370 l | |
| Maximum amount of Luggage (trunk): | 1235 l | ||
| Front suspension: | The depreciated rack | ||
| Rear suspension: | Helical spring | ||
| Max weight: | 1650 kg | 1870 kg | |
| Front brakes: | Ventilated discs | ||
| Rear brakes: | Ventilated discs | ||
| Kerb Weight: | 1395 kg | 1298 kg | |
| ABS: | yes | yes | |
| Steering type: | Steering rack and pinion | Steering rack and pinion | |
| Power steering: | Electric Steering | ||
| Minimum turning circle (turning diameter): | 9.8 m | 11.4 m | |
| Tire size: | 225/45 R17 | 215/50 R17 | |
| Wheel rims size: | 8J X 17 | R17 |