The Comparative Analysis :
BMW 420d Convertible Steptronic (15 - 17) vs. BMW 318i Convertible (10 - 14)
€ 50,100

€ 39,100

€ 50,100
Base Price ⓘBase price of a new vehicle with standard equipment in Germany at market launch.
€ 39,100
ⓘBase price of a new vehicle with standard equipment in Germany at market launch. Price Info
Vehicle Dimensions
The dimensions of these vehicles differ a little. Both cars are the same height, but the 420d Cabrio is an inch longer and 1.7 inches wider.
420d Cabrio
318i Cabrio
54.5
71.9
79.4
54.5
70.2
78.1
71.9 in
Width
70.2 in
79.4 in
Width Incl. Mirrors
78.1 in
54.5 in
Height
54.5 in
110.6
182.6
108.7
181.6
182.6 in
Length
181.6 in
110.6 in
Wheelbase
108.7 in
Vehicle Weight
420d Cabrio
318i Cabrio
3946 lb
Curb Weight
3682 lb
4817 lb
Gross Vehicle
Weight
Weight
4464 lb

Weight Difference:
265 lb
6.72 %

General
420d Cabrio
318i Cabrio
F33
Generation
E93
Convertible
Car Body Style
Convertible
Diesel
Fuel Type
Premium Unleaded

Rear-wheel drive
Drivetrain
Rear-wheel drive

8-speed automatic transmission
Transmission
6-speed manual transmission
Engine
420d Cabrio
318i Cabrio
Straight-four diesel engine with turbocharger
Engine Type
Straight-four gasoline engine (naturally aspirated engine)
BMW B47
Engine Series
BMW N43
B47-D20
Engine Code
N43-B20


4
Valves
4
4
Cylinders
4
2 L / 98 cu in
Displacement
2 L / 98 cu in
187 hp
at 4000 rpm
Power
141 hp
at 6000 rpm
420d Cabrio
187 hp
141 hp
318i Cabrio
295 lb‑ft
at 1750 rpm
Max. Torque
140 lb‑ft
at 4250 rpm
420d Cabrio
295 lb‑ft
140 lb‑ft
318i Cabrio
Performance
420d Cabrio
318i Cabrio
142 mph
Maximum Speed
130 mph
8 sec
Acceleration 0 to 62 mph
10.3 sec
62 mph
62
mph
mph
364 ft
0.000 sec

420d Cabrio
62 mph
62
mph
mph
469 ft
0.000 sec

318i Cabrio
▶ REPLAY
21.1 lb/hp
Weight-to-Power Ratio
26.11 lb/hp
420d Cabrio
21.1 lb/hp
26.11 lb/hp
318i Cabrio
Fuel Economy / Emissions
420d Cabrio
318i Cabrio
Fuel Economy
53 mpg
combined
36 mpg
420d Cabrio
53 mpg
36 mpg
318i Cabrio
45 mpg
city
28 mpg
No data
highway
No data
15.1 gal
Fuel Tank Capacity
16.6 gal
805 mi
Range
593 mi
420d Cabrio
805 mi
593 mi
318i Cabrio
Environmental Impact
90.4 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).
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
420d Cabrio
90.4 kWh
125 kWh
318i Cabrio
Euro 6b (NEFZ)
Emission Standard
Euro 5
187 g/mi (NEFZ)
CO2 Emissions
248 g/mi (NEFZ)
Practical Convenience
420d Cabrio
318i Cabrio
2
Doors
2
4
No. of Seats
4
871 lb
Maximum Payload
783 lb
10.5 cu ft
Trunk Volume
9.9 cu ft









No data
Cargo Volume (Seats Down)
No data