Comparison BMW 7 Series (E23, facelift 1983) 728i (184 Hp) & Saab 9000 Hatchback 2.3 16V CS (146 Hp) & Saab 9000 Hatchback 2.3 16V Turbo CSE (200 Hp) & Opel Commodore B Coupe 2.8 GS/E (160 Hp)
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| Brand: | BMW | Saab | Saab | Opel |
| Model: | 7 Series | 9000 | 9000 | Commodore |
| Generation: | 7 Series (E23, facelift 1983) | 9000 Hatchback | 9000 Hatchback | Commodore B Coupe |
| Engine / modification: | 728i (184 Hp) | 2.3 16V CS (146 Hp) | 2.3 16V Turbo CSE (200 Hp) | 2.8 GS/E (160 Hp) |
| Production start: | 1983 year | 1989 year | 1993 year | 1973 year |
| Production end: | 1986 year | 1998 year | 1998 year | 1975 year |
| Coupe type: | Sedan | Hatchback | Hatchback | Coupe |
| Num. of Doors: | 4 | 5 | 5 | 2 |
| Num. of seats: | 5 | 5 | 5 | 5 |
| Fuel consumption / economy - urban: | 15.1 l/100 km | |||
| Fuel consumption / economy - extra urban: | 7.9 l/100 km | |||
| Fuel consumption / economy - combined: | 11.1 l/100 km | 9.2 l/100 km | ||
| Fuel Type: | Petrol (Gasoline) | Petrol (Gasoline) | Petrol (Gasoline) | Petrol (Gasoline) |
| Drag coefficient: | 0.40 | 0.45 | ||
| Fuel tank volume: | 100 l | 66 l | 66 l | 70 l |
| Power: | 184 hp | 146 hp | 200 hp | 160 hp |
| Max power in: | 5800 rpm. | 5500 rpm. | 5300 rpm. | |
| Maximum speed: | 201 km/h | 235 km/h | 190 km/h | |
| Acceleration from 0 to 100 km/h: | 9.5 sec | 7.5 sec | 11 sec | |
| Torque: | 240 Nm @ 4200 rpm. | 323 Nm @ 1800 rpm. | 235 Nm/4000 rpm. | |
| Model Engine: | B234 | B234 | ||
| Engine position: | Front, longitudinal | Front, transverse | ||
| Engine displacement: | 2788 cm3 | 2290 cm3 | 2784 cm3 | |
| Engine oil capacity: | 4.3 l | 5 l | ||
| Coolant: | 9 l | 9 l | ||
| Fuel System: | Multi-point injection | Multi-point injection | Carburettor | |
| Aspiration / Turbine: | Turbocharging | |||
| Position of cylinders: | Inline | Inline | Inline | |
| Valvetrain: | DOHC | SOHC | ||
| Number of cylinders: | 6 | 4 | 6 | |
| Number of valves per cylinder: | 2 | 4 | 2 | |
| Compression ratio: | 9.3 | 9.3 | 9.5 | |
| Piston Stroke: | 80 mm | 90 mm | 69.8 mm | |
| Cylinder Bore: | 86 mm | 90 mm | 92 mm | |
| Wheel Drive: | Rear wheel drive | Front wheel drive | ||
| Number of Gears (automatic transmission): | 4 | |||
| Number of Gears (manual transmission): | 5 | 5 | 4 | |
| Length: | 4860 mm | 4761 mm | 4607 mm | |
| Width: | 1800 mm | 1778 mm | 1728 mm | |
| Height: | 1430 mm | 1420 mm | 1370 mm | |
| Wheelbase: | 2795 mm | 2672 mm | 2668 mm | |
| Front track: | 1502 mm | 1522 mm | 1450 mm | |
| Rear (Back) track: | 1524 mm | 1492 mm | 1400 mm | |
| Ride height(clearance): | 140 mm | |||
| Minimum volume of Luggage (trunk): | 480 l | 487 l | 434 l | |
| Maximum amount of Luggage (trunk): | 883 l | |||
| Front suspension: | Independent, Spring McPherson, with stabilizer | Wishbone | ||
| Rear suspension: | Independent, spring | Suspension with traction connecting levers | ||
| Max weight: | 1980 kg | 1930 kg | 1660 kg | |
| Front brakes: | Disc | Ventilated discs | Disc | |
| Rear brakes: | Drum | Disc | Drum | |
| Kerb Weight: | 1470 kg | 1375 kg | 1240 kg | |
| ABS: | yes | |||
| Steering type: | Steering rack and pinion | |||
| Power steering: | Hydraulic Steering | |||
| Minimum turning circle (turning diameter): | 11.6 m | 11.2 m | ||
| Tire size: | 195/70 R 14 | 205/60 R15 | ||
| Wheel rims size: | R14 | R15 |