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Compare BMW 8 Series G14 Convertible vs Alpina B6 F12 vs Alpina Roadster V8

Variants
840d MHEV xDrive
840d xDrive
840i
840i Euro6d
840i Euro6d xDrive
840i xDrive
M850i Euro6d xDrive
M850i xDrive
B6 Bi-Turbo
B6 Bi-Turbo EDITION 50

Capacity

Cargo Capacity
300 L / 10.6 cu-ft ~ 350 L / 12.4 cu-ft
Coolant Capacity
9.5 L / 10.0 qt
Fuel Capacity
70.0 L / 18.5 gal
73.0 L / 19.3 gal
Passengers
4
4
2
Payload
410 kg / 904 lbs
335 kg / 739 lbs

Chassis

Brakes | Front
Ventilated discs
Ventilated discs
Ventilated discs
Brakes | Rear
Ventilated discs
Ventilated discs
Ventilated discs
Power Steering
Electric Steering
Electric Steering
Hydraulic Steering
Suspension | Front
Double-wishbone
Double-wishbone
Double-wishbone
Suspension | Rear
Multi-link
Multi-link
Double-wishbone
Tire Size
255/35 R20
Turning Circle
11.9 m

Construction

Body Style
2-door Convertible
2-door Convertible

Dimensions

Size | Height
1320 mm / 52.0 in
Size | Length
4894 mm / 192.7 in
4400 mm / 173.2 in
Size | Width
1830 mm / 72.0 in
Track Width | Front
1594.0 mm / 62.8 in
1550.0 mm / 61.0 in
Track Width | Rear
1642.0 mm / 64.6 in
1570.0 mm / 61.8 in
Weight
2020.0 kg / 4453.3 lbs
1615.0 kg / 3560.5 lbs
Wheelbase
2822 mm / 111.1 in
2855 mm / 112.4 in
2505 mm / 98.6 in

Performance

Acceleration | 0 - 100 km/h
5.3 sec
Acceleration | 0 - 60 mph
5.0 sec
CO2 Emission
224 g/km
Fuel Economy
9.6 L/100km / 24.5 MPG (combined) | 13.2 L/100km / 17.8 MPG (urban) | 7.5 L/100km / 31.4 MPG (highway)
9.3 L/100km / 25.3 MPG (combined) | 15.0 L/100km / 15.7 MPG (urban) | 7.5 L/100km / 31.4 MPG (highway)
Top Speed
250.0 km/h / 155.3 mph
260.0 km/h / 161.6 mph

Powertrain

Drivetrain Layout
Front-engine (longitudinal), Rear-wheel drive
Front-engine (longitudinal), Rear-wheel drive
Engine | Bore
89.0 mm / 3.5 in
Engine | Compression Ratio
10.0:1
10.5:1
Engine | Displacement
4.4 L / 268.2 cu-in / 4395.0 cc
4.8 L / 295.2 cu-in / 4837.0 cc
Engine | Power
381.0 hp / 284.1 kW @ 5800 rpm
Engine | Specific Output
78.8 hp/L / 1.3 hp/cu-in
Engine | Stroke
88.3 mm / 3.5 in
89.0 mm / 3.5 in
Engine | Torque
520 Nm / 383.5 lb-ft @ 3800 rpm
Engine | Type
Bi-turbocharged direct-injected petrol V8 engine
Naturally-aspirated multi-port injected petrol V8 DOHC engine with 4 values per cylinder
Transmission | Gears
8-speed
8-speed
5-speed
Transmission | Type
Automatic Steptronic
Automatic Switch-Tronic
Manual

Production

Availability
2002 ~ 2006
Debut
2018-11
Made In
Germany

Reviews

Neofiliac score
85%
84%
83%
Pros
  • Rather good styling
  • Luxurious interior
  • Decent performanceGood 0.28 drag coefficient
  • Good suspension setup
  • Superb level of torque
  • Good performance
  • Double-wishbone + multi-link suspensions
  • Superb styling (but not better than the Z8)
  • Good handling (but not better than the Z8)
Cons
  • Diesel in a luxury convertible?
  • Only soft top
  • Poor reliability
  • Obsession with AWD
  • Worse handling despite having double-wishbone front suspensions
  • Even lower engine reliability
  • A downgrade from the standard E52 Z8

Price

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