Comparison BMW 7 Series (E23) 745i (252 Hp) Automatic & Opel Astra G 2.0 DI 16V (82 Hp) Automatic
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| Brand: | BMW | Opel |
| Model: | 7 Series | Astra |
| Generation: | 7 Series (E23) | Astra G |
| Engine / modification: | 745i (252 Hp) Automatic | 2.0 DI 16V (82 Hp) Automatic |
| Production start: | 1979 year | 1998 year |
| Production end: | 1983 year | 2002 year |
| Coupe type: | Sedan | Hatchback |
| Num. of Doors: | 4 | 3/5 |
| Num. of seats: | 5 | 5 |
| Fuel consumption / economy - urban: | 16.6 l/100 km | 8.9 l/100 km |
| Fuel consumption / economy - extra urban: | 5.4 l/100 km | |
| Fuel consumption / economy - combined: | 6.7 l/100 km | |
| Fuel Type: | Petrol (Gasoline) | Diesel |
| Drag coefficient: | 0.28 | |
| Fuel tank volume: | 100 l | 52 l |
| CO2 emissions: | 180 g/km | |
| Power: | 252 hp | 82 hp |
| Max power in: | 5200 rpm. | 4300 rpm. |
| Maximum speed: | 221 km/h | 170 km/h |
| Acceleration from 0 to 100 km/h: | 7.8 sec | 15.5 sec |
| Torque: | 380 Nm @ 2600 rpm. | 185 Nm @ 1800 rpm. |
| Model Engine: | M102B32 | X20DTL, Y20DTL |
| Engine position: | Front, longitudinal | Front, transverse |
| Engine displacement: | 3210 cm3 | 1995 cm3 |
| Engine oil capacity: | 5.5 l | |
| Coolant: | 7.9 l | |
| Fuel System: | Multi-point injection | Diesel - Standard diesel injection (SDI) |
| Aspiration / Turbine: | Turbocharger | Turbocharger |
| Position of cylinders: | Inline | Inline |
| Valvetrain: | SOHC | SOHC |
| Number of cylinders: | 6 | 4 |
| Number of valves per cylinder: | 2 | 4 |
| Compression ratio: | 7 | 18.5 |
| Piston Stroke: | 86 mm | 90 mm |
| Cylinder Bore: | 89 mm | 84 mm |
| Wheel Drive: | Front wheel drive | |
| Number of Gears (automatic transmission): | 3 | 4 |
| Length: | 4860 mm | 4110 mm |
| Width: | 1800 mm | 1709 mm |
| Width including mirrors: | 1989 mm | |
| Height: | 1430 mm | 1425 mm |
| Wheelbase: | 2795 mm | 2606 mm |
| Front track: | 1502 mm | 1464 mm |
| Rear (Back) track: | 1524 mm | 1452 mm |
| Ride height(clearance): | 132 mm | 130 mm |
| Front overhang: | 791 mm | |
| Rear overhang: | 713 mm | |
| Minimum volume of Luggage (trunk): | 370 l | |
| Maximum amount of Luggage (trunk): | 1180 l | |
| Front suspension: | Independent, Spring McPherson, with stabilizer | Independent, Spring McPherson, with stabilizer |
| Rear suspension: | Independent, spring multi-link with stabilizer | Semi-independent, spring |
| Max weight: | 2070 kg | 1765 kg |
| Front brakes: | Ventilated discs | Ventilated discs |
| Rear brakes: | Disc | Disc |
| Kerb Weight: | 1600 kg | 1245 kg |
| ABS: | yes | yes |
| Steering type: | Steering rack and pinion | |
| Power steering: | Hydraulic Steering | |
| Max. roof load: | 100 kg | |
| Minimum turning circle (turning diameter): | 10.8 m | |
| Permitted trailer load with brakes (12%): | 1300 kg | |
| Permitted trailer load without brakes: | 635 kg | |
| Permitted towbar download: | 75 kg | |
| Tire size: | 205/70 R14 | 185/65 R15 H |
| Wheel rims size: | 6.5 J x 14 | 6J x 15 ET49 |