The Comparative Analysis :
BMW 428i Cabrio (14 - 15) vs. BMW 420i Cabrio (17 - 18)
€ 48,200

€ 48,500

€ 48,200
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 4638 mm long, 1825 mm wide and 1384 mm tall.
428i Cabrio
420i Cabrio
1384
1825
2017
1384
1825
2017
1825 mm
Width
1825 mm
2017 mm
Width Incl. Mirrors
2017 mm
1384 mm
Height
1384 mm
2810
4638
2810
4638
4638 mm
Length
4638 mm
2810 mm
Wheelbase
2810 mm
Vehicle Weight
428i Cabrio
420i Cabrio
1755 kg
Kerb Weight
1775 kg
2140 kg
Gross Vehicle
Weight
Weight
2170 kg

Weight Difference:
20 kg
1.13 %

General
428i Cabrio
420i Cabrio
F33
Generation
F33
Convertible
Car Body Style
Convertible
Super Unleaded (98 RON)
Fuel Type
Super Unleaded (98 RON)

Rear-wheel drive
Drive
Rear-wheel drive

6-speed manual transmission
Transmission
6-speed manual transmission
Engine
428i Cabrio
420i Cabrio
Straight-four petrol engine with turbocharger
Engine Type
Straight-four petrol engine with turbocharger
BMW N20
Engine Series
BMW B48
N20-B20
Engine Code
B48-B20


4
Valves
4
4
Cylinders
4
1997 CC
Engine Capacity
1998 CC
242 bhp
at 5000 rpm
Power
181 bhp
at 5000 rpm
428i Cabrio
242 bhp
181 bhp
420i Cabrio
350 NM
at 1250 rpm
Max. Torque
270 NM
at 1350 rpm
428i Cabrio
350 NM
270 NM
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
89 m
0.000 sec

428i Cabrio
62 mph
62
mph
mph
114 m
0.000 sec

420i Cabrio
▶ REPLAY
7.25 kg/bhp
Weight-to-Power Ratio
9.81 kg/bhp
428i Cabrio
7.25 kg/bhp
9.81 kg/bhp
420i Cabrio
Fuel Economy / Emissions
428i Cabrio
420i Cabrio
Fuel Economy
42 mpg
combined
46 mpg
428i Cabrio
42 mpg
46 mpg
420i Cabrio
32 mpg
city
35 mpg
No data
motorway
No data
60 L
Fuel Tank Capacity
60 L
548 mi
Range
601 mi
428i Cabrio
548 mi
601 mi
420i Cabrio
Environmental Impact
128.7 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
128.7 kWh
117.5 kWh
420i Cabrio
Euro 6b (NEFZ)
Emission Standard
Euro 6b (NEFZ)
159 g/km (NEFZ)
CO2 Emissions
145 g/km (NEFZ)
Practical Convenience
428i Cabrio
420i Cabrio
2
Doors
2
4
No. of Seats
4
385 kg
Maximum Payload
395 kg
370 L
Boot Capacity
370 L










No data
Boot Capacity (Seats Down)
No data