The Comparative Analysis :

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

€ 55,000
ALPINA B3 S Convertible (03 - 06) ALPINA B3 S Cabrio
€ 50,800
 BMW 420i Convertible Steptronic (17 - ..) BMW 420i Cabrio
€ 55,000
Base Price ⓘBase price of a new vehicle with standard equipment in Germany at market launch.
€ 50,800

ⓘ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 (03 - 06)
69.2
80.1
54.5
Blueprint BMW 420i Convertible Steptronic (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 (03 - 06)
107.3
176.7
Blueprint BMW 420i Convertible Steptronic (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
3571 lb
Curb Weight
3946 lb
4497 lb
Gross Vehicle
Weight
4817 lb
ALPINA B3 S Convertible (03 - 06)
Weight Difference:
375 lb
9.5 %
BMW 420i Convertible Steptronic (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
6-speed manual 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
164 mph
Maximum Speed
143 mph
5.8 sec
Acceleration 0 to 62 mph
8.4 sec
62 mph 62
mph

266 ft
0.000 sec

ALPINA B3 S Cabrio

62 mph 62
mph

384 ft
0.000 sec

BMW 420i Cabrio

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

Fuel Economy / Emissions

ALPINA B3 S Cabrio
BMW 420i Cabrio
Fuel Economy
21 mpg
combined
37 mpg
ALPINA B3 S Cabrio
21 mpg
37 mpg
BMW 420i Cabrio
14 mpg
city
32 mpg
No data
highway
No data
Kraftstoffanzeige
16.6 gal
Fuel Tank Capacity
15.9 gal
Kraftstoffanzeige
350 mi
Range
592 mi
ALPINA B3 S Cabrio
350 mi
592 mi
BMW 420i Cabrio
Environmental Impact
212.1 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).
119.4 kWh
ALPINA B3 S Cabrio
212.1 kWh
119.4 kWh
BMW 420i Cabrio
Euro 3
Emission Standard
Euro 6d-TEMP-EVAP-ISC (WLTP)
431 g/mi (NEFZ)
CO2 Emissions
288 g/mi (WLTP)

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