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Car comparisons: BMW - 8 Series Convertible (G14) - 840d (320 Hp) xDrive Steptronic versus BMW - 8 Series (G15) - M850i (530 Hp) xDrive Steptronic (car comparisons, car technical specifications, tire sizes, dimensions, fuel consumption(fuel economy), max speed, max range, car problems and solutions, car reviews)

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Brand

Model

Generation

Car

Sample photo

^{Only differences?}

- GENERAL INFORMATIONS

Brand

BMW

Model

8 Series

Generation

8 Series Convertible (G14)

8 Series (G15)

Engine ^{(Engine modification)}

840d (320 Hp) xDrive Steptronic

M850i (530 Hp) xDrive Steptronic

Enginepower

320 ^hp (horsepower) - cycle/minute

530 ^hp (horsepower) - cycle/minute

Fuel type

Diesel

Petrol (Gasoline)

Body type

Cabriolet

Coupe

Doors

2 doors

Seats

4 seats

Drive whell

All wheel drive 4x4

Number of gears / Gearbox type

8 Gears, Automatic Transmission Steptronic

Automatic gear

8 Steptronic

Manual gear

Car type

Car segment

Production years

2019/2020 ^{(Start of car production / End of car production)}

2018/2020 ^{(Start of car production / End of car production)}

Powertrain architecture

Internal combustion engine (ICE)

- ENGINE SPECIFICATIONS

Engine

840d (320 Hp) xDrive Steptronic

M850i (530 Hp) xDrive Steptronic

Enginepower

320 ^hp (horsepower) - cycle/minute

530 ^hp (horsepower) - cycle/minute

Engine power rpm

4400 ^rpm

5500 - 6000 ^rpm

Power per litre

106.9 ^hp / L

120.6 ^hp / L

Engine location

Front, Longitudinaly

Engine displacement

2993 ^cm3 (cubic centimeter)

4395 ^cm3 (cubic centimeter)

Engine model / Motor code

B57D30B

N63B44D

Engine torque

680 ^nm (newton meter) - cycle/minute

750 ^nm (newton meter) - cycle/minute

Enginetorque rpm

1750 - 2250 ^rpm

1800 - 4600 ^rpm

Turbine

Twin power turbo, Intercooler

Engine systems

Particulate filter

Valvetrain

Cylinder sposition

Inline

V-engine

Cylinders count

6 cylinders

8 cylinders

Cylinders bore

84 ^mm (millimeter)
3.31 ⁱⁿ (inch)

89 ^mm (millimeter)
3.5 ⁱⁿ (inch)

Piston stroke

90 ^mm (millimeter)
3.54 ⁱⁿ (inch)

88.3 ^mm (millimeter)
3.46 ⁱⁿ (inch)

Valve per cylinder

4 valve

Compression ratio

16.5

10.5

Maximum engine speed

Engine oil capacity

6.5 ^lt (liters)
1.72 ^gal US gallons
1.43 ^gal UK gallons

10.5 ^lt (liters)
2.77 ^gal US gallons
2.31 ^gal UK gallons

Coolant capacity

9.5 ^lt (liters)
2.51 ^gal US gallons
2.09 ^gal UK gallons

10.5 ^lt (liters)
2.77 ^gal US gallons
2.31 ^gal UK gallons

Engine oil specification

0W-20, 0W-30, 0W-40, 5W-30, 5W-40, 10W-40 ?

Safety tests

- Euro NCAP (EU) safety / crash test results:
- IIHS-HLDI (USA) safety / crash test results:
- NHTSA (USA) safety / crash test results:

- CAR PERFORMANCE

Maximum speed

250 ^km - kilometer per hour
155 ^mph - mile per hour

Acceleration 0-100

5.2 seconds acceleration - (0km --> 100km)

3.7 seconds acceleration - (0km --> 100km)

Acceleration 0-200

Acceleration 0-300

Stop 100-0

Stop 200-0

- CARMEASUREMENTS / CAPACITIES

Car length

4843 ^mm - millimeter
190.67 ⁱⁿ - inch

4851 ^mm - millimeter
190.98 ⁱⁿ - inch

Car width

1902 ^mm - millimeter
74.88 ⁱⁿ - inch

Car width with mirrors folded

Car width including mirrors

2137 ^mm - millimeter
84.13 ⁱⁿ - inch

Car height

1339 ^mm - millimeter
52.72 ⁱⁿ - inch

1346 ^mm - millimeter
52.99 ⁱⁿ - inch

Ride height

118 ^mm - millimeter
4.65 ⁱⁿ - inch

128 ^mm - millimeter
5.04 ⁱⁿ - inch

Front track

1619 ^mm - millimeter
63.74 ⁱⁿ - inch

1627 ^mm - millimeter
64.06 ⁱⁿ - inch

Rear track ^{(Back track)}

1642 ^mm - millimeter
64.65 ⁱⁿ - inch

Front overhang

953 ^mm - millimeter
37.52 ⁱⁿ - inch

Rear overhang

1076 ^mm - millimeter
42.36 ⁱⁿ - inch

Wheelbase

2822 ^mm - millimeter
111.1 ⁱⁿ - inch

Drag coefficient

0.30 ^dc - aerodynamic coefficient

0.33 ^dc - aerodynamic coefficient

Minimum turning circle diameter

11.9 ^m - meter

Approach angle

Departure angle

Ramp angle

Climb angle

Wading depth

Drivetrain architecture

The Internal combustion engine (ICE) drives permanently the four wheels of the vehicle.

Tire sizes

245/45 R18 100Y ; 275/40 R18 103Y

245/35 R20 ; 275/30 R20

Rim sizes

8J x 18 ; 9J x 18

8J x 20 ; 9J x 20

Car weight ^{(Kerb weight)}

1955 ^kg - kilograms
4310.04 ^lbs - pounds

1890 ^kg - kilograms
4166.74 ^lbs - pounds

Maximum car weight

2485 ^kg - kilograms
5478.49 ^lbs - pounds

2395 ^kg - kilograms
5280.07 ^lbs - pounds

Maximum load

Maximum roof load

75 ^kg - kilograms
165.35 ^lbs - pounds

Minimum luggage volume

350 ^lt - liters

420 ^lt - liters

Maximum luggage volume

Permitted trailer load with brakes - 8%

Permitted trailer load with brakes - 12%

Permitted trailer load without brakes

Permitted towbar load

- TECHNICAL INFORMATIONS

Front brakes

Ventilated discs

Rear brakes

Ventilated discs

ABS

? (Anti-lock braking system)

Front suspension

Double wishbone

Rear suspension

Independent multi-link suspension

Steering type

Steering rack and pinion

Power steering

Electric Steering

Safety tests

- Euro NCAP (EU) safety / crash test results:
- IIHS-HLDI (USA) safety / crash test results:
- NHTSA (USA) safety / crash test results:

Car accessories

Tool Kit and Jack? Tire Repair Kit? Compressor? Fire Extinguisher? Warning Triangle? First Aid Kit? Trunk Modules? Bicycle Holder? Coat Hanger?

Safety / security

Airbags:
-Frontal Airbag: .Driver? .Passenger? .Rear? -Side Head Airbag?
-Side Chest?
-Side Pelvis Airbag?
-Knee?
-Curtain Airbag?
-Center Airbag?
-Airbag cut-off Switch: .Passenger? .Rear?

Seat Belts:
-Belt Pretensioner: .Driver? .Passenger? .Rear?
-Belt Load Limiter: .Driver? .Passenger?
-Height Adjustable Retractor: .Manual? -Type of Belt Three-Point-Belt: .Front Seats? .Outer Rear Seats?
-Rear Centre Seat Belt?
-Seat Belt Colour?

- FUEL CONSUMPTIONS

Fuel type

Diesel

Petrol (Gasoline)

Fuel system

Diesel Commonrail

Direct injection

Fuel tank volume

66 ^lt liters
17.44 ^gal US gallons
14.52 ^gal UK gallons

68 ^lt liters
17.96 ^gal US gallons
14.96 ^gal UK gallons

Cng fuel tank volume

Adblue tank volume

Fuel octane rating number

? ^on octane

Emissionstandard

Euro 6d

Euro 6

Carbondioxide emissions

155-166 ^co2 grams/kilometer

228-240 ^co2 grams/kilometer

Weight to power ratio

6.1 ^kg / hp

3.6 ^kg / hp

Weight to torque ratio

2.9 ^kg / nm

2.5 ^kg / nm

Fuel consumption (economy) in the city ^(urban)

7.3-7.4 ^lt liters Diesel / 100 kilometers
33.61-31.79 ^mpg US gallons
40.36-38.18 ^mpg UK gallons

Fuel consumption (economy) outside the city ^{(extra urban)}

5.1-5.6 ^lt liters Diesel / 100 kilometers
47.05-42.01 ^mpg US gallons
56.51-50.45 ^mpg UK gallons

Fuel consumption (economy) average ^(combined)

5.9-6.3 ^lt liters Diesel / 100 kilometers
47.05-37.34 ^mpg US gallons
56.51-44.85 ^mpg UK gallons

10.0-10.5 ^lt liters Petrol (Gasoline) / 100 kilometers
23.52-22.4 ^mpg US gallons
28.25-26.91 ^mpg UK gallons

- ELECTRIC MOTOR/HYBRID ENGINE CAR INFORMATIONS

Gross battery capacity

Net usable battery capacity

Electric / battery range

Battery technology

Battery recuperation output

Battery voltage

1. Electric motor power

1. Electric motor power rpm

1. Electric motor torque

1. Electric motor torque rpm

1. Electric motor location

1. Electric motor layout

1. Electric motor type

2. Electric motor power

2. Electric motor power rpm

2. Electric motor torque

2. Electric motor torque rpm

2. Electric motor location

2. Electric motor layout

2. Electric motor type

3. Electric motor power

3. Electric motor power rpm

3. Electric motor torque

3. Electric motor torque rpm

3. Electric motor location

3. Electric motor layout

3. Electric motor type

4. Electric motor power

4. Electric motor power rpm

4. Electric motor torque

4. Electric motor torque rpm

4. Electric motor location

4. Electric motor layout

4. Electric motor type

Electric system power

Electric system power rpm

Electric system torque

Electric system torque rpm

Electric motor maximum speed

Electric energy consumption average

Car informations

BMW - 8 Series Convertible (G14) - 840d (320 Hp) xDrive Steptronic car informations

BMW - 8 Series (G15) - M850i (530 Hp) xDrive Steptronic car informations

Car pictures

BMW - 8 Series Convertible (G14) - 840d (320 Hp) xDrive Steptronic car pictures

BMW - 8 Series (G15) - M850i (530 Hp) xDrive Steptronic car pictures

Car reviews

BMW - 8 Series Convertible (G14) - 840d (320 Hp) xDrive Steptronic car reviews

BMW - 8 Series (G15) - M850i (530 Hp) xDrive Steptronic car reviews

Summary

What body style ?
2 doors Cabriolet with 4 seats
How long?
4843 ^mm
How heavy?
1955 ^kg ^{(kerb weight)}
What size engine?
2993 ^cm3
How many cylinders?
6 ^cylinders
How much power?
320 ^hp
How much torque?
680 ^nm
How quick?
0-100 km: 5.2 ^seconds
How fast? / what is max speed?
250 ^km / 155 ^mph
How economical
urban: 7.3-7.4 ^lt Diesel / 100 km/h
extra urban: 5.1-5.6 ^lt Diesel / 100 km/h
combined: 5.9-6.3 ^lt Diesel / 100 km/h

What body style ?
2 doors Coupe with 4 seats
How long?
4851 ^mm
How heavy?
1890 ^kg ^{(kerb weight)}
What size engine?
4395 ^cm3
How many cylinders?
8 ^cylinders
How much power?
530 ^hp
How much torque?
750 ^nm
How quick?
0-100 km: 3.7 ^seconds
How fast? / what is max speed?
250 ^km / 155 ^mph
How economical
urban: ^lt Petrol (Gasoline) / 100 km/h
extra urban: ^lt Petrol (Gasoline) / 100 km/h
combined: 10.0-10.5 ^lt Petrol (Gasoline) / 100 km/h

What is your choice?

- My winner
BMW - 8 Series Convertible (G14) - 840d (320 Hp) xDrive Steptronic because?... ?

- My winner
BMW - 8 Series (G15) - M850i (530 Hp) xDrive Steptronic because?... ?