The Comparative Analysis :

ALPINA B3 S Convertible Switch-Tronic (03 - 06) vs. BMW 420i Convertible Steptronic (16 - 17)

€ 58,200
ALPINA B3 S Convertible Switch-Tronic (03 - 06) ALPINA B3 S Cabrio
€ 46,900
 BMW 420i Convertible Steptronic (16 - 17) BMW 420i Cabrio
€ 58,200
Base Price ⓘBase price of a new vehicle with standard equipment in Germany at market launch.
€ 46,900

ⓘBase price of a new vehicle with standard equipment in Germany at market launch. Price Info

Vehicle Dimensions

The ALPINA B3 S Cabrio is considerably smaller in every dimension. It's 5.9 inches shorter, 2.7 inches narrower and 1.3 inches lower than the BMW 420i Cabrio.
ALPINA B3 S Cabrio
BMW 420i Cabrio
53.2
Blueprint ALPINA B3 S Convertible Switch-Tronic (03 - 06)
69.2
80.1
54.5
Blueprint BMW 420i Convertible Steptronic (16 - 17)
71.9
79.4
69.2 in
Width
71.9 in
80.1 in
Width Incl. Mirrors
79.4 in
53.2 in
Height
54.5 in
Blueprint ALPINA B3 S Convertible Switch-Tronic (03 - 06)
107.3
176.7
Blueprint BMW 420i Convertible Steptronic (16 - 17)
110.6
182.6
176.7 in
Length
182.6 in
107.3 in
Wheelbase
110.6 in

Vehicle Weight

ALPINA B3 S Cabrio
BMW 420i Cabrio
3627 lb
Curb Weight
3946 lb
4553 lb
Gross Vehicle
Weight
4817 lb
ALPINA B3 S Convertible Switch-Tronic (03 - 06)
Weight Difference:
320 lb
8.11 %
BMW 420i Convertible Steptronic (16 - 17)

General

ALPINA B3 S Cabrio
BMW 420i Cabrio
E46
Generation
F33
Convertible
Car Body Style
Convertible
Premium Unleaded
Fuel Type
Premium Unleaded
Rear-wheel drive
Drivetrain
Rear-wheel drive
5-speed automatic transmission
Transmission
8-speed automatic transmission

Engine

ALPINA B3 S Cabrio
BMW 420i Cabrio
Straight-six gasoline engine (nat­u­ral­ly as­pi­rat­ed engine)
Engine Type
Straight-four gasoline engine with tur­bo­charger
Engine Series
BMW B48
E5/1
Engine Code
B48-B20
4
Valves
4
6
Cylinders
4
3.3 L / 161 cu in
Displacement
2 L / 98 cu in
301 hp
at 6300 rpm
Power
181 hp
at 5000 rpm
ALPINA B3 S Cabrio
301 hp
181 hp
BMW 420i Cabrio
267 lb‑ft
at 4500 rpm
Max. Torque
199 lb‑ft
at 1350 rpm
ALPINA B3 S Cabrio
267 lb‑ft
199 lb‑ft
BMW 420i Cabrio

Performance

ALPINA B3 S Cabrio
BMW 420i Cabrio
161 mph
Maximum Speed
143 mph
6.6 sec
Acceleration 0 to 62 mph
8.4 sec
62 mph 62
mph

302 ft
0.000 sec

ALPINA B3 S Cabrio

62 mph 62
mph

384 ft
0.000 sec

BMW 420i Cabrio

▶ REPLAY
12.05 lb/hp
Weight-to-Power Ratio
21.8 lb/hp
ALPINA B3 S Cabrio
12.05 lb/hp
21.8 lb/hp
BMW 420i Cabrio

Fuel Economy / Emissions

ALPINA B3 S Cabrio
BMW 420i Cabrio
Fuel Economy
20 mpg
combined
41 mpg
ALPINA B3 S Cabrio
20 mpg
41 mpg
BMW 420i Cabrio
13 mpg
city
31 mpg
No data
highway
No data
Kraftstoffanzeige
16.6 gal
Fuel Tank Capacity
15.9 gal
Kraftstoffanzeige
332 mi
Range
642 mi
ALPINA B3 S Cabrio
332 mi
642 mi
BMW 420i Cabrio
Environmental Impact
223.5 kWh
Total Energy Consumption
per 100 miles ⓘThe total energy consumption per 100 miles is the amount of energy consumed by a vehicle when burning fuel or using electricity per 100 miles (final energy), and the energy required to produce the appropriate amount of fuel or electricity (primary energy).
109.9 kWh
ALPINA B3 S Cabrio
223.5 kWh
109.9 kWh
BMW 420i Cabrio
Euro 3
Emission Standard
Euro 6b (NEFZ)
455 g/mi (NEFZ)
CO2 Emissions
219 g/mi (NEFZ)

Practical Convenience

ALPINA B3 S Cabrio
BMW 420i Cabrio
2
Doors
2
4
No. of Seats
4
1102 lb
Maximum Payload
871 lb
8.5 cu ft
Trunk Volume
10.5 cu ft
No data
Cargo Volume (Seats Down)
No data