Compare BMW 8 Series G14 Convertible vs Alpina Roadster V8 vs Alpina B3 E93
Variants
840d MHEV xDrive
840d xDrive
840i
840i Euro6d
840i Euro6d xDrive
840i xDrive
M850i Euro6d xDrive
M850i xDrive
Capacity
Cargo Capacity
430 L / 15.2 cu-ft
Coolant Capacity
9.5 L / 10.0 qt
Fuel Capacity
73.0 L / 19.3 gal
63.0 L / 16.6 gal
Passengers
4
2
4
Payload
335 kg / 739 lbs
355 kg / 783 lbs
Chassis
Brakes | Front
Ventilated discs
Ventilated discs
Ventilated discs
Brakes | Rear
Ventilated discs
Ventilated discs
Ventilated discs
Power Steering
Electric Steering
Hydraulic Steering
Suspension | Front
Double-wishbone
Double-wishbone
MacPherson strut
Suspension | Rear
Multi-link
Double-wishbone
Multi-link
Tire Size
255/35 R20
245/40 R18ZR, 265/40 R18ZR
Turning Circle
11.9 m
Construction
Body Style
2-door Convertible
2-door Convertible
Dimensions
Size | Height
1320 mm / 52.0 in
1395 mm / 54.9 in
Size | Length
4400 mm / 173.2 in
4580 mm / 180.3 in
Size | Width
1830 mm / 72.0 in
1782 mm / 70.2 in
Track Width | Front
1550.0 mm / 61.0 in
1503.0 mm / 59.2 in
Track Width | Rear
1642.0 mm / 64.6 in
1570.0 mm / 61.8 in
1512.0 mm / 59.5 in
Weight
1615.0 kg / 3560.5 lbs
1845.0 kg / 4067.5 lbs
Wheelbase
2822 mm / 111.1 in
2505 mm / 98.6 in
2760 mm / 108.7 in
Performance
Acceleration | 0 - 100 km/h
5.3 sec
5.0 sec
Acceleration | 0 - 60 mph
5.0 sec
4.8 sec
Fuel Economy
9.3 L/100km / 25.3 MPG (combined) | 15.0 L/100km / 15.7 MPG (urban) | 7.5 L/100km / 31.4 MPG (highway)
9.7 L/100km / 24.2 MPG (combined) | 14.0 L/100km / 16.8 MPG (urban) | 7.2 L/100km / 32.7 MPG (highway)
Top Speed
250.0 km/h / 155.3 mph
260.0 km/h / 161.6 mph
280.0 km/h / 174.0 mph
Powertrain
Drivetrain Layout
Front-engine (longitudinal), Rear-wheel drive
Front-engine (longitudinal), Rear-wheel drive
Emission Standard
Euro 5
Engine | Bore
84.0 mm / 3.3 in
Engine | Compression Ratio
10.5:1
9.4:1
Engine | Displacement
4.8 L / 295.2 cu-in / 4837.0 cc
3.0 L / 181.8 cu-in / 2979.0 cc
Engine | Power
381.0 hp / 284.1 kW @ 5800 rpm
360.0 hp / 268.5 kW @ 5500-6000 rpm
Engine | Specific Output
78.8 hp/L / 1.3 hp/cu-in
120.8 hp/L / 2.0 hp/cu-in
Engine | Stroke
89.0 mm / 3.5 in
89.6 mm / 3.5 in
Engine | Torque
520 Nm / 383.5 lb-ft @ 3800 rpm
500 Nm / 368.8 lb-ft @ 3800-5000 rpm
Engine | Type
Naturally-aspirated multi-port injected petrol V8 DOHC engine with 4 values per cylinder
Turbocharged multi-port injected petrol inline-6 DOHC engine with 4 values per cylinder
Transmission | Gears
8-speed
5-speed
6-speed
Transmission | Type
Automatic Steptronic
Manual
Automatic
Production
Availability
2002 ~ 2006
2007 ~ 2012
Debut
2018-11
Made In
Germany
Reviews
Neofiliac score
85%
83%
75%
Pros
- Rather good styling
- Luxurious interior
- Decent performanceGood 0.28 drag coefficient
- Good suspension setup
- Superb styling (but not better than the Z8)
- Good handling (but not better than the Z8)
- Hardtop convertible
- Great styling
Cons
- Diesel in a luxury convertible?
- Only soft top
- Poor reliability
- Obsession with AWD
- A downgrade from the standard E52 Z8
- Stuck with MacPherson struts in the front
- Performance not very good
- Somewhat overstyled
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