The Comparative Analysis :

BMW 318i Convertible (10 - 14) vs. ALPINA B4 Bi-Turbo Convertible Switch-Tronic (14 - 17)

€ 39,100
BMW 318i Convertible (10 - 14) BMW 318i Cabrio
€ 75,900
 ALPINA B4 Bi-Turbo Convertible Switch-Tronic (14 - 17) ALPINA B4 Bi-Turbo Cabrio
€ 39,100
Base Price ⓘBase price of a new vehicle with standard equipment in Germany at market launch.
€ 75,900

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

Vehicle Dimensions

The dimensions of these vehicles differ a little. The BMW 318i Cabrio is 1.1 inches shorter, 1.7 inches narrower and 0.2 inches taller than the ALPINA B4 Bi-Turbo Cabrio.
BMW 318i Cabrio
ALPINA B4 Bi-Turbo Cabrio
54.5
Blueprint BMW 318i Convertible (10 - 14)
70.2
78.1
54.3
Blueprint ALPINA B4 Bi-Turbo Convertible Switch-Tronic (14 - 17)
71.9
79.7
70.2 in
Width
71.9 in
78.1 in
Width Incl. Mirrors
79.7 in
54.5 in
Height
54.3 in
Blueprint BMW 318i Convertible (10 - 14)
108.7
181.6
Blueprint ALPINA B4 Bi-Turbo Convertible Switch-Tronic (14 - 17)
110.6
182.7
181.6 in
Length
182.7 in
108.7 in
Wheelbase
110.6 in

Vehicle Weight

BMW 318i Cabrio
ALPINA B4 Bi-Turbo Cabrio
3682 lb
Curb Weight
4222 lb
4464 lb
Gross Vehicle
Weight
5071 lb
BMW 318i Convertible (10 - 14)
Weight Difference:
540 lb
12.79 %
ALPINA B4 Bi-Turbo Convertible Switch-Tronic (14 - 17)

General

BMW 318i Cabrio
ALPINA B4 Bi-Turbo Cabrio
E93
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

BMW 318i Cabrio
ALPINA B4 Bi-Turbo Cabrio
Straight-four gasoline engine (nat­u­ral­ly as­pi­rat­ed engine)
Engine Type
Straight-six gasoline engine with two tur­bo­chargers (bi­turbo)
BMW N43
Engine Series
N43-B20
Engine Code
N55-R20
4
Valves
4
4
Cylinders
6
2 L / 98 cu in
Displacement
3 L / 147 cu in
141 hp
at 6000 rpm
Power
404 hp
at 5500 rpm
BMW 318i Cabrio
141 hp
404 hp
ALPINA B4 Bi-Turbo Cabrio
140 lb‑ft
at 4250 rpm
Max. Torque
443 lb‑ft
at 3000 rpm
BMW 318i Cabrio
140 lb‑ft
443 lb‑ft
ALPINA B4 Bi-Turbo Cabrio

Performance

BMW 318i Cabrio
ALPINA B4 Bi-Turbo Cabrio
130 mph
Maximum Speed
187 mph
10.3 sec
Acceleration 0 to 62 mph
4.5 sec
62 mph 62
mph

469 ft
0.000 sec

BMW 318i Cabrio

62 mph 62
mph

207 ft
0.000 sec

ALPINA B4 Bi-Turbo Cabrio

▶ REPLAY
26.11 lb/hp
Weight-to-Power Ratio
10.45 lb/hp
BMW 318i Cabrio
26.11 lb/hp
10.45 lb/hp
ALPINA B4 Bi-Turbo Cabrio

Fuel Economy / Emissions

BMW 318i Cabrio
ALPINA B4 Bi-Turbo Cabrio
Fuel Economy
36 mpg
combined
29 mpg
BMW 318i Cabrio
36 mpg
29 mpg
ALPINA B4 Bi-Turbo Cabrio
28 mpg
city
22 mpg
No data
highway
No data
Kraftstoffanzeige
16.6 gal
Fuel Tank Capacity
15.9 gal
Kraftstoffanzeige
593 mi
Range
466 mi
BMW 318i Cabrio
593 mi
466 mi
ALPINA B4 Bi-Turbo Cabrio
Environmental Impact
125 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).
151.6 kWh
BMW 318i Cabrio
125 kWh
151.6 kWh
ALPINA B4 Bi-Turbo Cabrio
Euro 5
Emission Standard
Euro 6b (NEFZ)
248 g/mi (NEFZ)
CO2 Emissions
299 g/mi (NEFZ)

Practical Convenience

BMW 318i Cabrio
ALPINA B4 Bi-Turbo Cabrio
2
Doors
2
4
No. of Seats
4
783 lb
Maximum Payload
849 lb
9.9 cu ft
Trunk Volume
10.5 cu ft
No data
Cargo Volume (Seats Down)
No data