Comparison BMW 7 Series (E32) 730i (188 Hp) cat & BMW 3 Series Sedan (E30) 315 (75 Hp)
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| Brand: | BMW | BMW |
| Model: | 7 Series | 3 Series |
| Generation: | 7 Series (E32) | 3 Series Sedan (E30) |
| Engine / modification: | 730i (188 Hp) cat | 315 (75 Hp) |
| Production start: | 1986 year | 1982 year |
| Production end: | 1992 year | 1983 year |
| Coupe type: | Sedan | Sedan |
| Num. of Doors: | 4 | 4 |
| Num. of seats: | 5 | 5 |
| Fuel consumption / economy - urban: | 16.3 l/100 km | 10.5 l/100 km |
| Fuel consumption / economy - extra urban: | 7.6 l/100 km | 6.0 l/100 km |
| Fuel consumption / economy - combined: | 11.1 l/100 km | 8.2 l/100 km |
| Fuel Type: | Petrol (Gasoline) | Petrol (Gasoline) |
| Drag coefficient: | 0.32 | |
| Fuel tank volume: | 90 l | 55 l |
| Power: | 188 hp | 75 hp |
| Max power in: | 5800 rpm. | 5800 rpm. |
| Maximum speed: | 220 km/h | 160 km/h |
| Acceleration from 0 to 100 km/h: | 9.4 sec | 14.0 sec |
| Torque: | 260 Nm @ 4000 rpm. | 110 Nm @ 3200 rpm. |
| Model Engine: | M30B30 | |
| Engine position: | Front, longitudinal | Front, longitudinal |
| Engine displacement: | 2986 cm3 | 1573 cm3 |
| Engine oil capacity: | 5.75 l | |
| Coolant: | 12 l | |
| Fuel System: | Multi-point injection | Carburettor |
| Position of cylinders: | Inline | Inline |
| Valvetrain: | OHC | |
| Number of cylinders: | 6 | 4 |
| Number of valves per cylinder: | 2 | 2 |
| Compression ratio: | 9 | |
| Piston Stroke: | 80 mm | |
| Cylinder Bore: | 89 mm | |
| Wheel Drive: | Rear wheel drive | |
| Number of Gears (manual transmission): | 5 | 4 |
| Length: | 4910 mm | 4321 mm |
| Width: | 1845 mm | 1641 mm |
| Height: | 1411 mm | 1379 mm |
| Wheelbase: | 2832 mm | 2570 mm |
| Front track: | 1527 mm | 1410 mm |
| Rear (Back) track: | 1550 mm | 1420 mm |
| Ride height(clearance): | 125 mm | |
| Minimum volume of Luggage (trunk): | 500 l | 425 l |
| Front suspension: | Coil spring | |
| Rear suspension: | Helical spring | |
| Max weight: | 2130 kg | 1540 kg |
| Front brakes: | Ventilated discs | Disc |
| Rear brakes: | Disc | Drum |
| Kerb Weight: | 1600 kg | 1100 kg |
| ABS: | yes | |
| Steering type: | Steering rack and pinion | |
| Power steering: | Hydraulic Steering | |
| Minimum turning circle (turning diameter): | 11.6 m | |
| Tire size: | 205/65 R15 | |
| Wheel rims size: | R15 |