Comparison BMW 6 Series (E24) 630 CS (185 Hp) & BMW 7 Series (E23) 728i (184 Hp) Automatic
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| Brand: | BMW | BMW |
| Model: | 6 Series | 7 Series |
| Generation: | 6 Series (E24) | 7 Series (E23) |
| Engine / modification: | 630 CS (185 Hp) | 728i (184 Hp) Automatic |
| Production start: | 1976 year | 1979 year |
| Production end: | 1979 year | 1983 year |
| Coupe type: | Coupe | Sedan |
| Num. of Doors: | 2 | 4 |
| Num. of seats: | 4 | 5 |
| Fuel consumption / economy - urban: | 14.5 l/100 km | |
| Fuel consumption / economy - combined: | 11.4 l/100 km | |
| Fuel Type: | Petrol (Gasoline) | Petrol (Gasoline) |
| Drag coefficient: | 0.41 | |
| Fuel tank volume: | 70 l | 100 l |
| Power: | 185 hp | 184 hp |
| Max power in: | 5800 rpm. | 5800 rpm. |
| Maximum speed: | 210 km/h | 190 km/h |
| Acceleration from 0 to 100 km/h: | 8.9 sec | 11.5 sec |
| Torque: | 255 Nm @ 3500 rpm. | 235 Nm @ 4300 rpm. |
| Model Engine: | M30 | M30B28 |
| Engine position: | Front, longitudinal | Front, longitudinal |
| Engine displacement: | 2986 cm3 | 2788 cm3 |
| Engine oil capacity: | 5.8 l | 5.8 l |
| Fuel System: | Carburettor | Multi-point injection |
| Position of cylinders: | Inline | Inline |
| Valvetrain: | SOHC | |
| Number of cylinders: | 6 | 6 |
| Number of valves per cylinder: | 2 | 2 |
| Compression ratio: | 9 | 9.3 |
| Piston Stroke: | 80 mm | 80 mm |
| Cylinder Bore: | 89 mm | 86 mm |
| Wheel Drive: | Rear wheel drive | |
| Number of Gears (automatic transmission): | 3 | |
| Number of Gears (manual transmission): | 4 | |
| Length: | 4755 mm | 4860 mm |
| Width: | 1725 mm | 1800 mm |
| Height: | 1365 mm | 1430 mm |
| Wheelbase: | 2626 mm | 2795 mm |
| Front track: | 1422 mm | 1502 mm |
| Rear (Back) track: | 1487 mm | 1524 mm |
| Ride height(clearance): | 132 mm | |
| Minimum volume of Luggage (trunk): | 415 l | |
| Front suspension: | Independent, Spring McPherson, with stabilizer | Independent, Spring McPherson, with stabilizer |
| Rear suspension: | Independent, spring | Independent, spring |
| Max weight: | 1830 kg | 1960 kg |
| Front brakes: | Ventilated discs | Ventilated discs |
| Rear brakes: | Disc | Disc |
| Kerb Weight: | 1450 kg | 1505 kg |
| Steering type: | Worm-reduction unit | |
| Minimum turning circle (turning diameter): | 11.2 m | |
| Tire size: | 195/70 R14 | 195/70 HR14; 220/55 HR390 TRX |
| Wheel rims size: | R14 | 6.0J x 14; 165 TR 390 |