Comparison BMW 8 Series Convertible (G14) 840d (320 Hp) xDrive Steptronic & BMW 1 Series Hatchback (F40) M135i (306 Hp) xDrive Steptronic
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| Brand: | BMW | BMW |
| Model: | 8 Series | 1 Series |
| Generation: | 8 Series Convertible (G14) | 1 Series Hatchback (F40) |
| Engine / modification: | 840d (320 Hp) xDrive Steptronic | M135i (306 Hp) xDrive Steptronic |
| Production start: | 2019 year | 2019 year |
| Production end: | 2020 year | 2020 year |
| Coupe type: | Cabriolet | Hatchback |
| Num. of Doors: | 2 | 5 |
| Num. of seats: | 4 | 5 |
| Fuel consumption / economy - urban: | 7.3-7.4 l/100 km | 8.2 l/100 km |
| Fuel consumption / economy - extra urban: | 5.1-5.6 l/100 km | 6.0 l/100 km |
| Fuel consumption / economy - combined: | 5.9-6.3 l/100 km | 6.8-7.1 l/100 km |
| Fuel Type: | Diesel | Petrol (Gasoline) |
| Drag coefficient: | 0.30 | 0.34 |
| Fuel tank volume: | 66 l | 50 l |
| Emission standard: | Euro 6d | Euro 6d - TEMP |
| CO2 emissions: | 155-166 g/km | 155-162 g/km |
| Power: | 320 hp | 306 hp |
| Max power in: | 4400 rpm. | 4500-6250 rpm. |
| Maximum speed: | 250 km/h | 250 km/h |
| Acceleration from 0 to 100 km/h: | 5.2 sec | 4.8 sec |
| Torque: | 680 Nm @ 1750-2250 rpm. | 450 Nm @ 1750-5000 rpm. |
| Model Engine: | B57D30 | B48A20T1 |
| Engine position: | Front, longitudinal | Front, transverse |
| Engine displacement: | 2993 cm3 | 1998 cm3 |
| Engine oil capacity: | 6.5 l | 5.25 l |
| Coolant: | 9.5 l | |
| Fuel System: | Diesel Commonrail | Direct injection |
| Aspiration / Turbine: | Twin-power turbo | Twin-power turbo |
| Position of cylinders: | Inline | Inline |
| Number of cylinders: | 6 | 4 |
| Number of valves per cylinder: | 4 | 4 |
| Compression ratio: | 16.5 | 9.5 |
| Piston Stroke: | 90 mm | 94.6 mm |
| Cylinder Bore: | 84 mm | 82 mm |
| Wheel Drive: | All wheel drive (4x4) | All wheel drive (4x4) |
| Number of Gears (automatic transmission): | 8 Steptronic | 8 Steptronic |
| Length: | 4843 mm | 4319 mm |
| Width: | 1902 mm | 1799 mm |
| Width including mirrors: | 2137 mm | 2081 mm |
| Height: | 1339 mm | 1434 mm |
| Wheelbase: | 2822 mm | 2670 mm |
| Front track: | 1619 mm | 1560 mm |
| Rear (Back) track: | 1642 mm | 1563 mm |
| Ride height(clearance): | 118 mm | 153 mm |
| Front overhang: | 857 mm | |
| Rear overhang: | 792 mm | |
| Minimum volume of Luggage (trunk): | 350 l | 380 l |
| Maximum amount of Luggage (trunk): | 1200 l | |
| Front suspension: | Double wishbone | |
| Rear suspension: | Multi-link independent | Multi-link independent |
| Max weight: | 2485 kg | 2085 kg |
| Front brakes: | Ventilated discs | Ventilated discs |
| Rear brakes: | Ventilated discs | Ventilated discs |
| Kerb Weight: | 1955 kg | 1525 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 | |
| Minimum turning circle (turning diameter): | 11.9 m | 11.4 m |
| Permitted towbar download: | 75 kg | |
| Tire size: | 245/45 R18 100Y; 275/40 R18 103Y | 225/40 R18 92 Y XL |
| Wheel rims size: | 8J x 18; 9J x 18 | 8J x 18 |