Car technical specifications and fuel economy / consumption / mpg

Comparison BMW 8 Series Convertible (G14) 840i (340 Hp) xDrive Steptronic & BMW 8 Series (G15) M850i (530 Hp) xDrive Steptronic


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BMW 8 Series Convertible (G14) 840i (340 Hp) xDrive Steptronic
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BMW 8 Series (G15) M850i (530 Hp) xDrive Steptronic
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Brand: BMW BMW
Model: 8 Series 8 Series
Generation: 8 Series Convertible (G14) 8 Series (G15)
Engine / modification: 840i (340 Hp) xDrive Steptronic M850i (530 Hp) xDrive Steptronic
Production start: 2019 year 2018 year
Production end: 2020 year 2020 year
Coupe type: Cabriolet Coupe
Num. of Doors: 2 2
Num. of seats: 4 4
Fuel consumption / economy - urban: 9.7-9.8 l/100 km
Fuel consumption / economy - extra urban: 6.6-6.7 l/100 km
Fuel consumption / economy - combined: 7.7-7.8 l/100 km 10.0-10.5 l/100 km
Fuel Type: Petrol (Gasoline) Petrol (Gasoline)
Drag coefficient: 0.31 0.33
Fuel tank volume: 68 l 68 l
Emission standard: Euro 6d - TEMP Euro 6
CO2 emissions: 175-178 g/km 228-240 g/km
Power: 340 hp 530 hp
Max power in: 5000-6500 rpm. 5500-6000 rpm.
Maximum speed: 250 km/h 250 km/h
Acceleration from 0 to 100 km/h: 4.9 sec 3.7 sec
Torque: 500 Nm @ 1600-4500 rpm. 750 Nm @ 1800-4600 rpm.
Model Engine: B58B30 N63B44
Engine position: Front, longitudinal Front, longitudinal
Engine displacement: 2998 cm3 4395 cm3
Engine oil capacity: 6.5 l 10.5 l
Fuel System: Direct injection Direct injection
Aspiration / Turbine: Twin-power turbo Twin-power turbo
Position of cylinders: Inline V engine
Number of cylinders: 6 8
Number of valves per cylinder: 4 4
Compression ratio: 11 10.5
Piston Stroke: 94.6 mm 88.3 mm
Cylinder Bore: 82 mm 89 mm
Wheel Drive: All wheel drive (4x4) All wheel drive (4x4)
Number of Gears (automatic transmission): 8 Steptronic 8 Steptronic
Length: 4843 mm 4851 mm
Width: 1902 mm 1902 mm
Width including mirrors: 2137 mm 2137 mm
Height: 1339 mm 1346 mm
Wheelbase: 2822 mm 2822 mm
Front track: 1627 mm 1627 mm
Rear (Back) track: 1642 mm 1642 mm
Ride height(clearance): 118 mm 128 mm
Front overhang: 953 mm 953 mm
Rear overhang: 1076 mm 1076 mm
Minimum volume of Luggage (trunk): 280 l 420 l
Maximum amount of Luggage (trunk): 350 l
Front suspension: Double wishbone Double wishbone
Rear suspension: Multi-link independent Multi-link independent
Max weight: 2400 kg 2395 kg
Front brakes: Ventilated discs Ventilated discs
Rear brakes: Ventilated discs Ventilated discs
Kerb Weight: 1880 kg 1890 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
Permitted trailer load with brakes (8%): 1305 kg
Minimum turning circle (turning diameter): 11.9 m 11.9 m
Permitted trailer load with brakes (12%): 1305 kg
Tire size: 245/45 R18 100Y XL; 275/40 R18 103Y XL 245/35 R20; 275/30 R20
Wheel rims size: 8J x 18; 9J x 18 8J x 20; 9J x 20