The Comparative Analysis :
BMW 320i Convertible Automatic (07 - 10) vs. ALPINA D4 Bi-Turbo Convertible Switch-Tronic (14 - 17)
€ 43,300
€ 65,700
€ 43,300
Base Price ⓘBase price of a new vehicle with standard equipment in Germany at market launch.
€ 65,700
ⓘBase price of a new vehicle with standard equipment in Germany at market launch. Price Info
Vehicle Dimensions
The dimensions of these vehicles differ slightly. The BMW 320i Cabrio is 2.4 inches shorter, 1.7 inches narrower and 0.2 inches taller than the ALPINA D4 Bi-Turbo Cabrio.
BMW 320i Cabrio
ALPINA D4 Bi-Turbo Cabrio
54.5
70.2
78.1
54.3
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
108.7
180.3
110.6
182.7
180.3 in
Length
182.7 in
108.7 in
Wheelbase
110.6 in
Vehicle Weight
BMW 320i Cabrio
ALPINA D4 Bi-Turbo Cabrio
3748 lb
Curb Weight
4167 lb
4530 lb
Gross Vehicle
Weight
Weight
4993 lb
Weight Difference:
419 lb
10.06 %
General
BMW 320i Cabrio
ALPINA D4 Bi-Turbo Cabrio
E93
Generation
F33
Convertible
Car Body Style
Convertible
Premium Unleaded
Fuel Type
Diesel

Rear-wheel drive
Drivetrain
Rear-wheel drive

6-speed automatic transmission
Transmission
8-speed automatic transmission
Engine
BMW 320i Cabrio
ALPINA D4 Bi-Turbo Cabrio
Straight-four gasoline engine (naturally aspirated engine)
Engine Type
Straight-six diesel engine with two turbochargers (biturbo)
BMW N43
Engine Series
N43-B20
Engine Code
N57-D30

4
Valves
4
4
Cylinders
6
2 L / 98 cu in
Displacement
3 L / 147 cu in
168 hp
at 6700 rpm
Power
345 hp
at 4000 rpm
BMW 320i Cabrio
168 hp
345 hp
ALPINA D4 Bi-Turbo Cabrio
155 lb‑ft
at 4250 rpm
Max. Torque
516 lb‑ft
at 1500 rpm
BMW 320i Cabrio
155 lb‑ft
516 lb‑ft
ALPINA D4 Bi-Turbo Cabrio
Performance
BMW 320i Cabrio
ALPINA D4 Bi-Turbo Cabrio
140 mph
Maximum Speed
171 mph
9.8 sec
Acceleration 0 to 62 mph
5 sec
62 mph
62
mph
mph
446 ft
0.000 sec
BMW 320i Cabrio
62 mph
62
mph
mph
226 ft
0.000 sec
ALPINA D4 Bi-Turbo Cabrio
▶ REPLAY
22.31 lb/hp
Weight-to-Power Ratio
12.08 lb/hp
BMW 320i Cabrio
22.31 lb/hp
12.08 lb/hp
ALPINA D4 Bi-Turbo Cabrio
Fuel Economy / Emissions
BMW 320i Cabrio
ALPINA D4 Bi-Turbo Cabrio
Fuel Economy
32 mpg
combined
40 mpg
BMW 320i Cabrio
32 mpg
40 mpg
ALPINA D4 Bi-Turbo Cabrio
24 mpg
city
36 mpg
No data
highway
No data
16.6 gal
Fuel Tank Capacity
15.9 gal
536 mi
Range
632 mi
BMW 320i Cabrio
536 mi
632 mi
ALPINA D4 Bi-Turbo Cabrio
Environmental Impact
138.2 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).
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).
121.3 kWh
BMW 320i Cabrio
138.2 kWh
121.3 kWh
ALPINA D4 Bi-Turbo Cabrio
Euro 5
Emission Standard
Euro 6b (NEFZ)
272 g/mi (NEFZ)
CO2 Emissions
251 g/mi (NEFZ)
Practical Convenience
BMW 320i Cabrio
ALPINA D4 Bi-Turbo Cabrio
2
Doors
2
4
No. of Seats
4
783 lb
Maximum Payload
827 lb
9.9 cu ft
Trunk Volume
10.5 cu ft









No data
Cargo Volume (Seats Down)
No data















