The Comparative Analysis :

BMW M4 Convertible (18 - 19) vs. BMW 420d Convertible Steptronic (14 - 15)

€ 85,700
BMW M4 Convertible (18 - 19) M4 Cabrio
€ 48,500
 BMW 420d Convertible Steptronic (14 - 15) 420d Cabrio
€ 85,700
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 M4 Cabrio is a little bigger in every dimension. It's 1.3 inches longer, 1.8 inches wider and 0.1 inches taller than the 420d Cabrio.
M4 Cabrio
420d Cabrio
54.6
Blueprint BMW M4 Convertible (18 - 19)
73.6
79.3
54.5
Blueprint BMW 420d Convertible Steptronic (14 - 15)
71.9
79.4
73.6 in
Width
71.9 in
79.3 in
Width Incl. Mirrors
79.4 in
54.6 in
Height
54.5 in
Blueprint BMW M4 Convertible (18 - 19)
110.7
183.9
Blueprint BMW 420d Convertible Steptronic (14 - 15)
110.6
182.6
183.9 in
Length
182.6 in
110.7 in
Wheelbase
110.6 in

Vehicle Weight

M4 Cabrio
420d Cabrio
4112 lb
Curb Weight
3869 lb
4960 lb
Gross Vehicle
Weight
4762 lb
BMW M4 Convertible (18 - 19)
Weight Difference:
243 lb
5.91 %
BMW 420d Convertible Steptronic (14 - 15)

General

M4 Cabrio
420d Cabrio
F83
Generation
F33
Convertible
Car Body Style
Convertible
Premium Unleaded
Fuel Type
Diesel
Rear-wheel drive
Drivetrain
Rear-wheel drive
6-speed manual transmission
Transmission
8-speed automatic transmission

Engine

M4 Cabrio
420d Cabrio
Straight-six gasoline engine with two tur­bo­chargers (bi­turbo)
Engine Type
Straight-four diesel engine with tur­bo­charger
BMW S55
Engine Series
BMW N47
S55-B30
Engine Code
N47-D20
4
Valves
4
6
Cylinders
4
3 L / 147 cu in
Displacement
2 L / 98 cu in
425 hp
at 5550 rpm
Power
181 hp
at 4000 rpm
M4 Cabrio
425 hp
181 hp
420d Cabrio
406 lb‑ft
at 2350 rpm
Max. Torque
280 lb‑ft
at 1750 rpm
M4 Cabrio
406 lb‑ft
280 lb‑ft
420d Cabrio

Performance

M4 Cabrio
420d Cabrio
155 mph
Maximum Speed
142 mph
4.6 sec
Acceleration 0 to 62 mph
8.2 sec
62 mph 62
mph

210 ft
0.000 sec

M4 Cabrio

62 mph 62
mph

374 ft
0.000 sec

420d Cabrio

▶ REPLAY
9.68 lb/hp
Weight-to-Power Ratio
21.38 lb/hp
M4 Cabrio
9.68 lb/hp
21.38 lb/hp
420d Cabrio

Fuel Economy / Emissions

M4 Cabrio
420d Cabrio
Fuel Economy
23 mpg
combined
49 mpg
M4 Cabrio
23 mpg
49 mpg
420d Cabrio
18 mpg
city
41 mpg
No data
highway
No data
Kraftstoffanzeige
15.9 gal
Fuel Tank Capacity
15.1 gal
Kraftstoffanzeige
369 mi
Range
738 mi
M4 Cabrio
369 mi
738 mi
420d Cabrio
Environmental Impact
191.4 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).
98.8 kWh
M4 Cabrio
191.4 kWh
98.8 kWh
420d Cabrio
Euro 6d-TEMP-EVAP (WLTP)
Emission Standard
Euro 6b (NEFZ)
385 g/mi (WLTP)
CO2 Emissions
204 g/mi (NEFZ)

Practical Convenience

M4 Cabrio
420d Cabrio
2
Doors
2
4
No. of Seats
4
849 lb
Maximum Payload
893 lb
10.5 cu ft
Trunk Volume
10.5 cu ft
No data
Cargo Volume (Seats Down)
No data