Compare BMW M4 G83 Convertible vs Alpina B3 E46 Convertible vs BMW 4 Series F33 LCI Convertible
Variants
B3 3.3
B3 3.3 AT
B3 S
B3 S AT
420d
420d AT
420i
420i AT
430d AT
430i
430i AT
430i xDrive AT
435d xDrive AT
440i AT
440i xDrive AT
Capacity
Cargo Capacity
300 L / 10.6 cu-ft ~ 385 L / 13.6 cu-ft
300 L / 10.6 cu-ft
370 L / 13.1 cu-ft
Engine Oil Capacity
7.0 L / 7.4 qt
Fuel Capacity
59.0 L / 15.6 gal
63.0 L / 16.6 gal
Passengers
4
4
4
Payload
425 kg / 937 lbs
420 kg / 926 lbs
Chassis
Brakes | Front
Ventilated discs
Ventilated discs
Ventilated discs
Brakes | Rear
Ventilated discs
Ventilated discs
Ventilated discs
Power Steering
Electric Steering
Hydraulic Steering
Electric Steering
Steering Ratio
14.6
Suspension | Front
MacPherson strut
MacPherson strut
MacPherson strut
Suspension | Rear
Multi-link
Multi-link
Multi-link
Tire Size
Front wheel tires: 275/35 R19 Rear wheel tires: 285/30 R20
225/50 R17, 225/45 R18, 255/40 R18, 225/40 R19, 255/35 R19
Tire Size | Front
275/35 ZR19 100Y XL
Tire Size | Rear
285/30 ZR20 99Y XL
Turning Circle
12.6 m / 41.3 ft
Construction
Body Style
2-door Convertible
2-door Convertible
2-door Convertible
Dimensions
Ground Clearance
121 mm / 4.8 in
Size | Height
1395 mm / 54.9 in
1352 mm / 53.2 in
Size | Length
4794 mm / 188.7 in
4488 mm / 176.7 in
4640 mm / 182.7 in
Size | Width
1887 mm / 74.3 in
1757 mm / 69.2 in
1825 mm / 71.9 in
Track Width | Front
1617.0 mm / 63.7 in
1471.0 mm / 57.9 in
Track Width | Rear
1605.0 mm / 63.2 in
1472.0 mm / 58.0 in
1593.0 mm / 62.7 in
Weight
1920.0 kg / 4232.9 lbs
1620.0 kg / 3571.5 lbs
Wheel Size
Front wheel rims: 9.5J x 19 Rear wheel rims: 10.5J x 20
7.5J x 17, 8J x 18, 8.5J x 18, 8J x 19, 8.5J x 19
Wheel Size | Front
9.5J x 19
Wheel Size | Rear
10.5J x 20
Wheelbase
2857 mm / 112.5 in
2725 mm / 107.3 in
2810 mm / 110.6 in
Performance
Acceleration | 0 - 100 km/h
3.7 sec
Acceleration | 0 - 60 mph
3.5 sec
CO2 Emission
231 ~ 233 g/km
Coefficient Of Drag
0.34
Fuel Economy
10.2 L/100km / 23.1 MPG (combined)
Top Speed
250.0 km/h / 155.3 mph
Powertrain
Drivetrain Layout
Front-engine (longitudinal), All-wheel drive
Front-engine (longitudinal), Rear-wheel drive
Emission Standard
Euro 6d
Euro 6
Engine
S58B30T0
Engine | Bore
84.0 mm / 3.3 in
Engine | Compression Ratio
9.3:1
10.2:1
Engine | Displacement
3.0 L / 182.6 cu-in / 2993.0 cc
Engine | Power
510.0 hp / 380.3 kW @ 6250 rpm
Engine | Redline
7200 rpm
Engine | Specific Output
170.4 hp/L / 2.8 hp/cu-in
Engine | Stroke
90.0 mm / 3.5 in
93.8 mm / 3.7 in
Engine | Torque
650 Nm / 479.4 lb-ft @ 2750-5500 rpm
Engine | Type
Twin-scroll turbocharged direct-injected petrol inline-6 engine with 4 values per cylinder
Naturally-aspirated multi-port injected petrol inline-6 DOHC engine with 4 values per cylinder
Fuel Capacity
59 L
Transmission | Gears
8-speed
Transmission | Type
Automatic M Steptronic
Production
Availability
2021
2017 ~ 2020
Debut
2021-05
Made In
Germany
Reviews
Neofiliac score
78%
71%
77%
Pros
- Decent performance
- OK-ish styling with the top down
- Solid S58 engine
- Enjoyable 7200rpm redline
- Classic Alpina styling
- Decent reliability
- As reliable a drivetrain as BMW gets
- Good 0.28 drag coefficient
- Good ZF 8HP transmission
- Good looks with top up or down
Cons
- Ugly front-end
- Stuck with MacPherson struts in the front
- AWD-only
- Horrible ZF 5HP automatic transmission
- Not the best soft-top for its price
- Complex and unreliable top
- Engine reliability concerns
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