The Comparative Analysis :
BMW 428i Convertible Steptronic (14 - 15) vs. BMW 420i Convertible (17 - 18)
€ 50,400
€ 48,500
€ 50,400
Base Price ⓘBase price of a new vehicle with standard equipment in Germany at market launch.
€ 48,500
ⓘBase price of a new vehicle with standard equipment in Germany at market launch. Price Info
Vehicle Dimensions
The dimensions of the 428i Cabrio and the 420i Cabrio are absolutely identical. Both are 182.6 inches long, 71.9 inches wide and 54.5 inches tall.
428i Cabrio
420i Cabrio
54.5
71.9
79.4
54.5
71.9
79.4
71.9 in
Width
71.9 in
79.4 in
Width Incl. Mirrors
79.4 in
54.5 in
Height
54.5 in
110.6
182.6
110.6
182.6
182.6 in
Length
182.6 in
110.6 in
Wheelbase
110.6 in
Vehicle Weight
428i Cabrio
420i Cabrio
3913 lb
Curb Weight
3913 lb
4762 lb
Gross Vehicle
Weight
Weight
4784 lb
Weight Difference:
0 lb
0 %
General
428i Cabrio
420i Cabrio
F33
Generation
F33
Convertible
Car Body Style
Convertible
Premium Unleaded
Fuel Type
Premium Unleaded
Rear-wheel drive
Drivetrain
Rear-wheel drive
8-speed automatic transmission
Transmission
6-speed manual transmission
Engine
428i Cabrio
420i Cabrio
Straight-four gasoline engine with turbocharger
Engine Type
Straight-four gasoline engine with turbocharger
BMW N20
Engine Series
BMW B48
N20-B20
Engine Code
B48-B20
4
Valves
4
4
Cylinders
4
2 L / 98 cu in
Displacement
2 L / 98 cu in
242 hp
at 5000 rpm
Power
181 hp
at 5000 rpm
428i Cabrio
242 hp
181 hp
420i Cabrio
258 lb‑ft
at 1250 rpm
Max. Torque
199 lb‑ft
at 1350 rpm
428i Cabrio
258 lb‑ft
199 lb‑ft
420i Cabrio
Performance
428i Cabrio
420i Cabrio
155 mph
Maximum Speed
143 mph
6.4 sec
Acceleration 0 to 62 mph
8.2 sec
62 mph
62
mph
mph
292 ft
0.000 sec
428i Cabrio
62 mph
62
mph
mph
374 ft
0.000 sec
420i Cabrio
▶ REPLAY
16.17 lb/hp
Weight-to-Power Ratio
21.62 lb/hp
428i Cabrio
16.17 lb/hp
21.62 lb/hp
420i Cabrio
Fuel Economy / Emissions
428i Cabrio
420i Cabrio
Fuel Economy
36 mpg
combined
38 mpg
428i Cabrio
36 mpg
38 mpg
420i Cabrio
27 mpg
city
29 mpg
No data
highway
No data
15.9 gal
Fuel Tank Capacity
15.9 gal
565 mi
Range
601 mi
428i Cabrio
565 mi
601 mi
420i 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).
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).
117.5 kWh
428i Cabrio
125 kWh
117.5 kWh
420i Cabrio
Euro 6b (NEFZ)
Emission Standard
Euro 6b (NEFZ)
248 g/mi (NEFZ)
CO2 Emissions
233 g/mi (NEFZ)
Practical Convenience
428i Cabrio
420i Cabrio
2
Doors
2
4
No. of Seats
4
849 lb
Maximum Payload
871 lb
10.5 cu ft
Trunk Volume
10.5 cu ft
No data
Cargo Volume (Seats Down)
No data
