The Comparative Analysis :
BMW 320i Convertible Automatic (07 - 10) vs. BMW 420i Convertible Steptronic (14 - 16)
€ 43,300
€ 46,100
€ 43,300
Base Price ⓘBase price of a new vehicle with standard equipment in Germany at market launch.
€ 46,100
ⓘ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. Both cars are the same height, but the 320i Cabrio is 2.3 inches shorter and 1.7 inches narrower.
320i Cabrio
420i Cabrio
54.5
70.2
78.1
54.5
71.9
79.4
70.2 in
Width
71.9 in
78.1 in
Width Incl. Mirrors
79.4 in
54.5 in
Height
54.5 in
108.7
180.3
110.6
182.6
180.3 in
Length
182.6 in
108.7 in
Wheelbase
110.6 in
Vehicle Weight
320i Cabrio
420i Cabrio
3748 lb
Curb Weight
3858 lb
4530 lb
Gross Vehicle
Weight
Weight
4729 lb
Weight Difference:
110 lb
2.85 %
General
320i Cabrio
420i Cabrio
E93
Generation
F33
Convertible
Car Body Style
Convertible
Premium Unleaded
Fuel Type
Premium Unleaded
Rear-wheel drive
Drivetrain
Rear-wheel drive
6-speed automatic transmission
Transmission
8-speed automatic transmission
Engine
320i Cabrio
420i Cabrio
Straight-four gasoline engine (naturally aspirated engine)
Engine Type
Straight-four gasoline engine with turbocharger
BMW N43
Engine Series
BMW N20
N43-B20
Engine Code
N20-B20
4
Valves
4
4
Cylinders
4
2 L / 98 cu in
Displacement
2 L / 98 cu in
168 hp
at 6700 rpm
Power
181 hp
at 5000 rpm
320i Cabrio
168 hp
181 hp
420i Cabrio
155 lb‑ft
at 4250 rpm
Max. Torque
199 lb‑ft
at 1250 rpm
320i Cabrio
155 lb‑ft
199 lb‑ft
420i Cabrio
Performance
320i Cabrio
420i Cabrio
140 mph
Maximum Speed
143 mph
9.8 sec
Acceleration 0 to 62 mph
8.3 sec
62 mph
62
mph
mph
446 ft
0.000 sec
320i Cabrio
62 mph
62
mph
mph
377 ft
0.000 sec
420i Cabrio
▶ REPLAY
22.31 lb/hp
Weight-to-Power Ratio
21.31 lb/hp
320i Cabrio
22.31 lb/hp
21.31 lb/hp
420i Cabrio
Fuel Economy / Emissions
320i Cabrio
420i Cabrio
Fuel Economy
32 mpg
combined
37 mpg
320i Cabrio
32 mpg
37 mpg
420i Cabrio
24 mpg
city
27 mpg
No data
highway
No data
16.6 gal
Fuel Tank Capacity
15.9 gal
536 mi
Range
583 mi
320i Cabrio
536 mi
583 mi
420i 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).
121.2 kWh
320i Cabrio
138.2 kWh
121.2 kWh
420i Cabrio
Euro 5
Emission Standard
Euro 6b (NEFZ)
272 g/mi (NEFZ)
CO2 Emissions
240 g/mi (NEFZ)
Practical Convenience
320i Cabrio
420i Cabrio
2
Doors
2
4
No. of Seats
4
783 lb
Maximum Payload
871 lb
9.9 cu ft
Trunk Volume
10.5 cu ft
No data
Cargo Volume (Seats Down)
No data
