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