The Comparative Analysis :
BMW M3 Convertible SMG (04 - 06) vs. BMW 420d Convertible (15 - 17)
€ 67,000
€ 47,900
€ 67,000
Base Price ⓘBase price of a new vehicle with standard equipment in Germany at market launch.
€ 47,900
ⓘBase price of a new vehicle with standard equipment in Germany at market launch. Price Info
Vehicle Dimensions
The M3 Cabrio is considerably smaller in every dimension. It's 5.7 inches shorter, 1.8 inches narrower and 0.5 inches lower than the 420d Cabrio.
M3 Cabrio
420d Cabrio
54
70.1
78
54.5
71.9
79.4
70.1 in
Width
71.9 in
78 in
Width Incl. Mirrors
79.4 in
54 in
Height
54.5 in
107.5
176.9
110.6
182.6
176.9 in
Length
182.6 in
107.5 in
Wheelbase
110.6 in
Vehicle Weight
M3 Cabrio
420d Cabrio
3814 lb
Curb Weight
3913 lb
4630 lb
Gross Vehicle
Weight
Weight
4784 lb
Weight Difference:
99 lb
2.53 %
General
M3 Cabrio
420d Cabrio
E46
Generation
F33
Convertible
Car Body Style
Convertible
Premium Unleaded
Fuel Type
Diesel
Rear-wheel drive
Drivetrain
Rear-wheel drive
6-speed automated manual transmission (AMT)
Transmission
6-speed manual transmission
Engine
M3 Cabrio
420d Cabrio
Straight-six gasoline engine (naturally aspirated engine)
Engine Type
Straight-four diesel engine with turbocharger
BMW S54
Engine Series
BMW B47
S54-B32
Engine Code
B47-D20
4
Valves
4
6
Cylinders
4
3.2 L / 157 cu in
Displacement
2 L / 98 cu in
338 hp
at 7900 rpm
Power
187 hp
at 4000 rpm
M3 Cabrio
338 hp
187 hp
420d Cabrio
269 lb‑ft
at 4900 rpm
Max. Torque
295 lb‑ft
at 1750 rpm
M3 Cabrio
269 lb‑ft
295 lb‑ft
420d Cabrio
Performance
M3 Cabrio
420d Cabrio
155 mph
Maximum Speed
146 mph
5.5 sec
Acceleration 0 to 62 mph
8.1 sec
62 mph
62
mph
mph
249 ft
0.000 sec
M3 Cabrio
62 mph
62
mph
mph
371 ft
0.000 sec
420d Cabrio
▶ REPLAY
11.28 lb/hp
Weight-to-Power Ratio
20.93 lb/hp
M3 Cabrio
11.28 lb/hp
20.93 lb/hp
420d Cabrio
Fuel Economy / Emissions
M3 Cabrio
420d Cabrio
Fuel Economy
17 mpg
combined
49 mpg
M3 Cabrio
17 mpg
49 mpg
420d Cabrio
11 mpg
city
41 mpg
No data
highway
No data
16.6 gal
Fuel Tank Capacity
15.1 gal
288 mi
Range
738 mi
M3 Cabrio
288 mi
738 mi
420d Cabrio
Environmental Impact
257.7 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).
98.8 kWh
M3 Cabrio
257.7 kWh
98.8 kWh
420d Cabrio
Euro 4
Emission Standard
Euro 6b (NEFZ)
528 g/mi (NEFZ)
CO2 Emissions
204 g/mi (NEFZ)
Practical Convenience
M3 Cabrio
420d Cabrio
2
Doors
2
4
No. of Seats
4
816 lb
Maximum Payload
871 lb
8.5 cu ft
Trunk Volume
10.5 cu ft
No data
Cargo Volume (Seats Down)
No data
