Comparison BMW 7 Series (E23) 728 (170 Hp) & BMW X4 (F26) 20d (190 Hp) xDrive
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| Brand: | BMW | BMW |
| Model: | 7 Series | X4 |
| Generation: | 7 Series (E23) | X4 (F26) |
| Engine / modification: | 728 (170 Hp) | 20d (190 Hp) xDrive |
| Production start: | 1977 year | 2014 year |
| Production end: | 1979 year | 2018 year |
| Coupe type: | Sedan | SUV |
| Num. of Doors: | 4 | 5 |
| Num. of seats: | 5 | 5 |
| Fuel consumption / economy - urban: | 6.2 l/100 km | |
| Fuel consumption / economy - extra urban: | 5.0 l/100 km | |
| Fuel consumption / economy - combined: | 5.4 l/100 km | |
| Fuel Type: | Petrol (Gasoline) | Petrol (Gasoline) |
| Drag coefficient: | 0.33 | |
| Fuel tank volume: | 90 l | 67 l |
| Emission standard: | Euro 6 | |
| CO2 emissions: | 143 g/km | |
| Power: | 170 hp | 190 hp |
| Max power in: | 5800 rpm. | 4000 rpm. |
| Maximum speed: | 192 km/h | 212 km/h |
| Acceleration from 0 to 100 km/h: | 10.1 sec | 8.0 sec |
| Torque: | 233 Nm @ 4000 rpm. | 400 Nm @ 1750-2500 rpm. |
| Model Engine: | M30B28 | B47D20 |
| Engine position: | Front, longitudinal | Front, longitudinal |
| Engine displacement: | 2788 cm3 | 1995 cm3 |
| Engine oil capacity: | 5.8 l | 5 l |
| Coolant: | 9.5 l | |
| Fuel System: | Multi-point injection | Diesel Commonrail |
| Aspiration / Turbine: | Twin-power turbo | |
| Position of cylinders: | Inline | Inline |
| Valvetrain: | SOHC | |
| Number of cylinders: | 6 | 4 |
| Number of valves per cylinder: | 2 | 4 |
| Compression ratio: | 9 | 16.5 |
| Piston Stroke: | 80 mm | 90 mm |
| Cylinder Bore: | 86 mm | 84 mm |
| Wheel Drive: | All wheel drive (4x4) | |
| Number of Gears (manual transmission): | 5 | 6 |
| Length: | 4860 mm | 4671 mm |
| Width: | 1800 mm | 1881 mm |
| Height: | 1430 mm | 1624 mm |
| Wheelbase: | 2795 mm | 2810 mm |
| Front track: | 1502 mm | 1616 mm |
| Rear (Back) track: | 1524 mm | 1632 mm |
| Ride height(clearance): | 132 mm | 204 mm |
| Minimum volume of Luggage (trunk): | 500 l | |
| Maximum amount of Luggage (trunk): | 1400 l | |
| Front suspension: | Independent, Spring McPherson, with stabilizer | Independent, spring |
| Rear suspension: | Independent, spring | Multi-link independent |
| Max weight: | 2000 kg | 2320 kg |
| Front brakes: | Ventilated discs | Ventilated discs |
| Rear brakes: | Disc | Ventilated discs |
| Kerb Weight: | 1530 kg | 1730 kg |
| ABS: | yes | |
| Steering type: | Steering rack and pinion | |
| Power steering: | Electric Steering | |
| Max. roof load: | 100 kg | |
| Minimum turning circle (turning diameter): | 11.9 m | |
| Permitted trailer load with brakes (12%): | 2000 kg | |
| Permitted trailer load without brakes: | 750 kg | |
| Permitted towbar download: | 100 kg | |
| Tire size: | 195/70 R14 | 225/60 R17 99V |
| Wheel rims size: | 6.0J x 14 | 7.5J x 17 |