Comparison BMW 8 Series Convertible (G14, facelift 2022) M850i (530 Hp) xDrive Steptronic Sport & BMW 7 Series (E23, facelift 1983) 728i (184 Hp)
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| Brand: | BMW | BMW |
| Model: | 8 Series | 7 Series |
| Generation: | 8 Series Convertible (G14, facelift 2022) | 7 Series (E23, facelift 1983) |
| Engine / modification: | M850i (530 Hp) xDrive Steptronic Sport | 728i (184 Hp) |
| Production start: | 2022 year | 1983 year |
| Production end: | 1986 year | |
| Coupe type: | Cabriolet | Sedan |
| Powertrain Architecture: | Internal Combustion engine | |
| Num. of Doors: | 2 | 4 |
| Num. of seats: | 4 | 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 | |
| Fuel Type: | Petrol (Gasoline) | Petrol (Gasoline) |
| Drag coefficient: | 0.40 | |
| Fuel tank volume: | 68 l | 100 l |
| Combined fuel consumption (WLTP): | 10.7-11 l/100 km | |
| Emission standard: | Euro 6d | |
| Power: | 530 hp | 184 hp |
| Max power in: | 5500-6000 rpm. | 5800 rpm. |
| Maximum speed: | 250 , Electronically limited km/h | 201 km/h |
| Acceleration from 0 to 100 km/h: | 4.1 sec | 9.5 sec |
| CO2 emissions (WLTP): | 243-249 g/km | |
| Torque: | 750 Nm @ 1800-4600 rpm. | 240 Nm @ 4200 rpm. |
| Model Engine: | N63B44D | |
| Engine position: | Front, longitudinal | Front, longitudinal |
| Engine displacement: | 4395 cm3 | 2788 cm3 |
| Engine oil capacity: | 10.5 l | |
| Coolant: | 10 l | |
| Fuel System: | Direct injection | Multi-point injection |
| Aspiration / Turbine: | BiTurbo | |
| Position of cylinders: | V engine | Inline |
| Number of cylinders: | 8 | 6 |
| Number of valves per cylinder: | 4 | 2 |
| Compression ratio: | 10.5 | 9.3 |
| Piston Stroke: | 88.3 mm | 80 mm |
| Cylinder Bore: | 89 mm | 86 mm |
| Wheel Drive: | All wheel drive (4x4) | Rear wheel drive |
| Number of Gears (automatic transmission): | 8 Steptronic Sport | |
| Number of Gears (manual transmission): | 5 | |
| Length: | 4851 mm | 4860 mm |
| Width: | 1902 mm | 1800 mm |
| Width including mirrors: | 2137 mm | |
| Height: | 1345 mm | 1430 mm |
| Wheelbase: | 2822 mm | 2795 mm |
| Front track: | 1627 mm | 1502 mm |
| Rear (Back) track: | 1642 mm | 1524 mm |
| Front overhang: | 953 mm | |
| Rear overhang: | 1076 mm | |
| Minimum volume of Luggage (trunk): | 280-350 l | 480 l |
| Front suspension: | Double wishbone | Independent, Spring McPherson, with stabilizer |
| Rear suspension: | Multi-link independent | Independent, spring |
| Max weight: | 2515 kg | 1980 kg |
| Front brakes: | Ventilated discs | Disc |
| Rear brakes: | Ventilated discs | Drum |
| Kerb Weight: | 2050 kg | 1470 kg |
| Steering type: | Steering rack and pinion | |
| Power steering: | Electric Steering | |
| Minimum turning circle (turning diameter): | 11.9 m | 11.6 m |
| Tire size: | 245/35 R20; 275/30 R20 | 195/70 R 14 |
| Wheel rims size: | 8J x 20; 9J x 20 | R14 |