The Comparative Analysis :

BMW 428i Convertible (14 - 15) vs. BMW 420i Convertible Steptronic (17 - ..)

€ 48,200
BMW 428i Convertible (14 - 15) 428i Cabrio
€ 50,800
 BMW 420i Convertible Steptronic (17 - ..) 420i Cabrio
€ 48,200
Base Price ⓘBase price of a new vehicle with standard equipment in Germany at market launch.
€ 50,800

ⓘ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
Blueprint BMW 428i Convertible (14 - 15)
71.9
79.4
54.5
Blueprint BMW 420i Convertible Steptronic (17 - ..)
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
Blueprint BMW 428i Convertible (14 - 15)
110.6
182.6
Blueprint BMW 420i Convertible Steptronic (17 - ..)
110.6
182.6
182.6 in
Length
182.6 in
110.6 in
Wheelbase
110.6 in

Vehicle Weight

428i Cabrio
420i Cabrio
3869 lb
Curb Weight
3946 lb
4718 lb
Gross Vehicle
Weight
4817 lb
BMW 428i Convertible (14 - 15)
Weight Difference:
77 lb
1.95 %
BMW 420i Convertible Steptronic (17 - ..)

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
6-speed manual transmission
Transmission
8-speed automatic 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
8.4 sec
62 mph 62
mph

292 ft
0.000 sec

428i Cabrio

62 mph 62
mph

384 ft
0.000 sec

420i Cabrio

▶ REPLAY
15.99 lb/hp
Weight-to-Power Ratio
21.8 lb/hp
428i Cabrio
15.99 lb/hp
21.8 lb/hp
420i Cabrio

Fuel Economy / Emissions

428i Cabrio
420i Cabrio
Fuel Economy
35 mpg
combined
37 mpg
428i Cabrio
35 mpg
37 mpg
420i Cabrio
27 mpg
city
32 mpg
No data
highway
No data
Kraftstoffanzeige
15.9 gal
Fuel Tank Capacity
15.9 gal
Kraftstoffanzeige
548 mi
Range
592 mi
428i Cabrio
548 mi
592 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).
119.4 kWh
428i Cabrio
128.7 kWh
119.4 kWh
420i Cabrio
Euro 6b (NEFZ)
Emission Standard
Euro 6d-TEMP-EVAP-ISC (WLTP)
256 g/mi (NEFZ)
CO2 Emissions
288 g/mi (WLTP)

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