Comparison BMW 7 Series (E23, facelift 1983) 728i (184 Hp) & Opel Vectra B CC (facelift 1999) 2.5i V6 (170 Hp)
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| Brand: | BMW | Opel |
| Model: | 7 Series | Vectra |
| Generation: | 7 Series (E23, facelift 1983) | Vectra B CC (facelift 1999) |
| Engine / modification: | 728i (184 Hp) | 2.5i V6 (170 Hp) |
| Production start: | 1983 year | 1999 year |
| Production end: | 1986 year | 2000 year |
| Coupe type: | Sedan | Hatchback |
| Num. of Doors: | 4 | 5 |
| Num. of seats: | 5 | 5 |
| Fuel consumption / economy - urban: | 15.1 l/100 km | 14.1 l/100 km |
| Fuel consumption / economy - extra urban: | 7.9 l/100 km | 7.3 l/100 km |
| Fuel consumption / economy - combined: | 11.1 l/100 km | 9.8 l/100 km |
| Fuel Type: | Petrol (Gasoline) | Petrol (Gasoline) |
| Drag coefficient: | 0.40 | |
| Fuel tank volume: | 100 l | 60 l |
| Emission standard: | Euro 2 | |
| CO2 emissions: | 236 g/km | |
| Power: | 184 hp | 170 hp |
| Max power in: | 5800 rpm. | 5800 rpm. |
| Maximum speed: | 201 km/h | 230 km/h |
| Acceleration from 0 to 100 km/h: | 9.5 sec | 8.5 sec |
| Torque: | 240 Nm @ 4200 rpm. | 230 Nm @ 3200 rpm. |
| Engine position: | Front, longitudinal | Front, transverse |
| Engine displacement: | 2788 cm3 | 2498 cm3 |
| Fuel System: | Multi-point injection | Multi-point injection |
| Position of cylinders: | Inline | V engine |
| Valvetrain: | DOHC | |
| Number of cylinders: | 6 | 6 |
| Number of valves per cylinder: | 2 | 4 |
| Compression ratio: | 9.3 | 10 |
| Piston Stroke: | 80 mm | 79.6 mm |
| Cylinder Bore: | 86 mm | 81.6 mm |
| Wheel Drive: | Rear wheel drive | Front wheel drive |
| Number of Gears (manual transmission): | 5 | 5 |
| Length: | 4860 mm | 4495 mm |
| Width: | 1800 mm | 1707 mm |
| Width including mirrors: | 1841 mm | |
| Height: | 1430 mm | 1425 mm |
| Wheelbase: | 2795 mm | 2637 mm |
| Front track: | 1502 mm | 1484 mm |
| Rear (Back) track: | 1524 mm | 1487 mm |
| Minimum volume of Luggage (trunk): | 480 l | 480 l |
| Maximum amount of Luggage (trunk): | 790 l | |
| Front suspension: | Independent, Spring McPherson, with stabilizer | Coil spring |
| Rear suspension: | Independent, spring | Helical spring |
| Max weight: | 1980 kg | 1875 kg |
| Front brakes: | Disc | Ventilated discs |
| Rear brakes: | Drum | Disc |
| Kerb Weight: | 1470 kg | 1370 kg |
| ABS: | yes | |
| Steering type: | Steering rack and pinion | |
| Power steering: | Hydraulic Steering | |
| Minimum turning circle (turning diameter): | 11.6 m | |
| Tire size: | 195/70 R 14 | 205/55 R16 |
| Wheel rims size: | R14 | R16 |