Comparison BMW 7 Series (E23, facelift 1983) 728i (184 Hp) Automatic & BMW 1 Series Coupe (E82) 120i (170 Hp) & BMW 2 Series Coupe (F22) 218i (136 Hp) Steptronic
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| Brand: | BMW | BMW | BMW |
| Model: | 7 Series | 1 Series | 2 Series |
| Generation: | 7 Series (E23, facelift 1983) | 1 Series Coupe (E82) | 2 Series Coupe (F22) |
| Engine / modification: | 728i (184 Hp) Automatic | 120i (170 Hp) | 218i (136 Hp) Steptronic |
| Production start: | 1983 year | 2009 year | 2015 year |
| Production end: | 1986 year | 2011 year | 2017 year |
| Coupe type: | Sedan | Coupe | Coupe |
| Num. of Doors: | 4 | 2 | 2 |
| Num. of seats: | 5 | 4 | 4 |
| Fuel consumption / economy - urban: | 14.5 l/100 km | 8.6 l/100 km | 6.2-6.8 l/100 km |
| Fuel consumption / economy - extra urban: | 7.8 l/100 km | 5.4 l/100 km | 4.4-4.8 l/100 km |
| Fuel consumption / economy - combined: | 10.7 l/100 km | 6.6 l/100 km | 5.1-5.5 l/100 km |
| Fuel Type: | Petrol (Gasoline) | Petrol (Gasoline) | Petrol (Gasoline) |
| Drag coefficient: | 0.40 | 0.30 | 0.29 |
| Fuel tank volume: | 100 l | 53 l | 52 l |
| Emission standard: | Euro 5 | Euro 6 | |
| CO2 emissions: | 153 g/km | 118-129 g/km | |
| Power: | 184 hp | 170 hp | 136 hp |
| Max power in: | 5800 rpm. | 6700 rpm. | 4500-6000 rpm. |
| Maximum speed: | 195 km/h | 224 km/h | 210 km/h |
| Acceleration from 0 to 100 km/h: | 11.4 sec | 7.8 sec | 8.9 sec |
| Torque: | 240 Nm @ 4200 rpm. | 210 Nm @ 4250 rpm. | 220 Nm @ 1250 rpm. |
| Model Engine: | N43B20 | B38B15 | |
| Engine position: | Front, longitudinal | Front, longitudinal | Front, longitudinal |
| Engine displacement: | 2788 cm3 | 1995 cm3 | 1499 cm3 |
| Engine oil capacity: | 4.25 l | 4.25 l | |
| Coolant: | 7.2 l | 8.7 l | |
| Fuel System: | Multi-point injection | Direct injection | Direct injection |
| Aspiration / Turbine: | Twin-power turbo | ||
| Position of cylinders: | Inline | Inline | Inline |
| Number of cylinders: | 6 | 4 | 3 |
| Number of valves per cylinder: | 2 | 4 | 4 |
| Compression ratio: | 9.3 | 12 | 11 |
| Piston Stroke: | 80 mm | 90 mm | 94.6 mm |
| Cylinder Bore: | 86 mm | 84 mm | 82 mm |
| Wheel Drive: | Rear wheel drive | Rear wheel drive | Rear wheel drive |
| Number of Gears (automatic transmission): | 4 | 8 Steptronic | |
| Number of Gears (manual transmission): | 6 | ||
| Length: | 4860 mm | 4360 mm | 4432 mm |
| Width: | 1800 mm | 1748 mm | 1774 mm |
| Height: | 1430 mm | 1423 mm | 1418 mm |
| Wheelbase: | 2795 mm | 2660 mm | 2690 mm |
| Front track: | 1502 mm | 1474 mm | 1521 mm |
| Rear (Back) track: | 1524 mm | 1507 mm | 1556 mm |
| Ride height(clearance): | 147 mm | 140 mm | |
| Minimum volume of Luggage (trunk): | 480 l | 370 l | 390 l |
| Front suspension: | Independent, Spring McPherson, with stabilizer | Double wishbone | Double wishbone |
| Rear suspension: | Independent, spring | Multi-link independent | Multi-link independent |
| Max weight: | 1980 kg | 1740 kg | 1870 kg |
| Front brakes: | Disc | Ventilated discs | Ventilated discs |
| Rear brakes: | Drum | Disc | Disc |
| Kerb Weight: | 1490 kg | 1300 kg | 1360 kg |
| ABS: | yes | yes | |
| Steering type: | Steering rack and pinion | Steering rack and pinion | |
| Power steering: | Electric Steering | Electric Steering | |
| Max. roof load: | 75 kg | 75 kg | |
| Minimum turning circle (turning diameter): | 11.6 m | 10.7 m | 10.9 m |
| Permitted trailer load with brakes (12%): | 1200 kg | 1300 kg | |
| Permitted trailer load without brakes: | 680 kg | 680 kg | |
| Permitted towbar download: | 75 kg | ||
| Tire size: | 195/70 HR 14 | 205/55 R16 87V | 205/50 R17; 225/45 R17; 245/40 R17; 225/40 R18; 245/35 R18 |
| Wheel rims size: | R14 | 7 J x 16 | 7J x 17; 7.5J x 17; 8J x 17; 7.5J x 18; 8J x 18 |