Car comparison

BMW 4 Series Gran Coupe (F36) 420dvsBMW 4 Series Convertible (F33) 420i

Compare specs, acceleration, fuel consumption, dimensions, practicality, and estimated running costs side by side.

New comparison

BMW 4 Series Gran Coupe (F36)

420d

190 hp1995 ccDieselRWDAutomaticTurbochargedCoupe2015-2016
VS

BMW 4 Series Convertible (F33)

420i

184 hp1998 ccGasolineRWDManualTurbochargedCabriolet / convertible2016-2016

Comparison overview

Use the estimates as comparison hints and verify exact figures before making decisions.

Best choices

BMW 4 Series Gran Coupe (F36) 420d

  • Quickest 0-100 km/h
    7.3 s
  • Fastest top speed
    231 km/h
    144 mph
  • Most powerful
    190 hp
    142 kW
  • Highest torque
    400 Nm
    295 lb-ft
  • Lightest
    1,540 kg
    3,395 lb
  • Best power-to-weight
    123 hp/t
    92 kW/t
    8.1 kg/hp
  • Lowest combined fuel consumption
    4.3 L/100 km
    54.7 mpg US
    65.7 mpg UK
  • Lowest city consumption
    5.1 L/100 km
    46.1 mpg US
    55.4 mpg UK
  • Lowest highway consumption
    3.9 L/100 km
    60.3 mpg US
    72.4 mpg UK
  • Lowest CO2 emissions
    114 g/km
  • Best estimated range
    1,326 km
    824 mi
  • Largest trunk
    480 L
  • Best overall score
    58/100
  • Best performance score
    53/100
  • Best economy score
    95/100
  • Best practicality score
    68/100

Specification comparison

Specification comparison
ModelBMW4 Series Gran Coupe (F36)420dBMW4 Series Convertible (F33)420i
Power
190hp142kW
184hp137kW
Torque
400Nm295lb-ft
270Nm199lb-ft
Curb weight
1,540kg3,395lb
1,700kg3,748lb
Gross weight
2,100kg4,630lb
2,170kg4,784lb
Top speed
231 km/h
144 mph
230 km/h
143 mph
To 99% top speed
88.1s99% target: 229 km/h / 142 mph
Calculated
105.7s99% target: 228 km/h / 141 mph
Calculated
0-100 km/h
7.3s
8.2s
0-200 km/h
32.8s
Calculated
39.0s
Calculated
0-60 mph
6.9s
Calculated
7.7s
Calculated
Fuel consumption
4.3L/100 km54.7mpg US65.7mpg UK
6.6L/100 km35.6mpg US42.8mpg UK
Fuel consumption city
5.1L/100 km46.1mpg US55.4mpg UK
8.6L/100 km27.4mpg US32.8mpg UK
Fuel consumption highway
3.9L/100 km60.3mpg US72.4mpg UK
5.5L/100 km42.8mpg US51.4mpg UK
Quarter mile
15.3s
Calculated
15.9s
Calculated
Power-to-weight
123hp/t92kW/t56hp/1000 lb
Calculated
108hp/t81kW/t49hp/1000 lb
Calculated
Torque-to-weight
260Nm/t174lb-ft/ton
Calculated
159Nm/t106lb-ft/ton
Calculated
Estimated range
1,326km824mi
Calculated
909km565mi
Calculated
Displacement
1,995cc122cu in
1,998cc122cu in
Length
4,638mm183in
4,638mm183in
Width
1,825mm72in
1,825mm72in
Height
1,389mm55in
1,384mm54in
Wheelbase
2,810mm111in
2,810mm111in
Front track
1,545mm61in
1,545mm61in
Rear track
1,594mm63in
1,594mm63in
Ground clearance
130mm5in
130mm5in
Trunk volume
480L
370L
Max trunk volume
1,300L
-
Doors
5
2
Seats
5
4
Fuel tank
57L
60L
CO2 emissions
114g/km
153g/km

Performance charts

Use the estimates as comparison hints and verify exact figures before making decisions.

Dyno simulation

Estimated stock-style power and torque curves by engine speed.

BMW 4 Series Gran Coupe (F36) 420dBMW 4 Series Convertible (F33) 420iPowerTorque
  • BMW 4 Series Gran Coupe (F36) 420d: Power / Torque
  • BMW 4 Series Convertible (F33) 420i: Power / Torque
Dyno simulation data table
VehiclePeak power RPMPeak torque RPMMax engine speed
BMW4 Series Gran Coupe (F36)420d4,000 rpm1,750-2,500 rpm4,250 rpm
BMW4 Series Convertible (F33)420i5,000 rpm1,350-4,600 rpm5,250 rpm

Acceleration curve

Estimated speed over time for selected vehicles.

Acceleration and drag-race table
MetricBMW4 Series Gran Coupe (F36)420dBMW4 Series Convertible (F33)420i
Acceleration checkpoints
0-60 mph
0-97 km/h
6.9 s
7.7 s
0-100 km/h
0-62 mph
7.3 s
8.2 s
0-200 km/h
0-124 mph
32.8 s
39.0 s
Top speed
231 km/h
144 mph
230 km/h
143 mph
Drag race simulation
60 ft
18 m
2.5 s
2.5 s
330 ft
101 m
6.6 s
6.8 s
1/8 mile
201 m
9.9 s
10.4 s
1000 ft
305 m
12.8 s
13.4 s
1/4 mile
402 m
15.3 s
15.9 s
Trap speed
1/4 mile
402 m
151 km/h
94 mph
144 km/h
89 mph

Power comparison

Bar comparison chart for Power. Higher is better · hp / kW

Chart data table
VehicleValue
BMW4 Series Gran Coupe (F36)420d
190 hp
142 kW
BMW4 Series Convertible (F33)420i
184 hp
137 kW

BMW 4 Series Gran Coupe (F36) 420d has 6 hp more than BMW 4 Series Convertible (F33) 420i.

The biggest power difference is between BMW 4 Series Convertible (F33) 420i and BMW 4 Series Gran Coupe (F36) 420d: 6 hp (4 kW).

Torque comparison

Bar comparison chart for Torque. Higher is better · Nm / lb-ft

Chart data table
VehicleValue
BMW4 Series Gran Coupe (F36)420d
400 Nm
295 lb-ft
BMW4 Series Convertible (F33)420i
270 Nm
199 lb-ft

Curb weight comparison

Bar comparison chart for Curb weight. Lower is better · kg / lb

Chart data table
VehicleValue
BMW4 Series Gran Coupe (F36)420d
1,540 kg
3,395 lb
BMW4 Series Convertible (F33)420i
1,700 kg
3,748 lb

Top speed without limiter comparison

Bar comparison chart for Top speed without limiter. Higher is better · km/h / mph

Chart data table
VehicleValue
BMW4 Series Gran Coupe (F36)420d
231 km/h
144 mph
BMW4 Series Convertible (F33)420i
230 km/h
143 mph

0-100 km/h comparison

Bar comparison chart for 0-100 km/h. Lower is better · seconds

Chart data table
VehicleValue
BMW4 Series Gran Coupe (F36)420d7.3 s
BMW4 Series Convertible (F33)420i8.2 s

The biggest 0-100 km/h difference is between BMW 4 Series Gran Coupe (F36) 420d and BMW 4 Series Convertible (F33) 420i: 0.9 s.

Fuel consumption comparison

Bar comparison chart for Fuel consumption. Lower is better · L/100 km / mpg US / mpg UK

Chart data table
VehicleValue
BMW4 Series Gran Coupe (F36)420d
4.3 L/100 km
54.7 mpg US
65.7 mpg UK
BMW4 Series Convertible (F33)420i
6.6 L/100 km
35.6 mpg US
42.8 mpg UK

The biggest fuel consumption difference is between BMW 4 Series Gran Coupe (F36) 420d and BMW 4 Series Convertible (F33) 420i: 2.3 L/100 km.

Power-to-weight comparison

Bar comparison chart for Power-to-weight. Higher is better · hp/t / kW/t

Chart data table
VehicleValue
BMW4 Series Gran Coupe (F36)420d
123 hp/t
92 kW/t
8.1 kg/hp
BMW4 Series Convertible (F33)420i
108 hp/t
81 kW/t
9.2 kg/hp

Estimated range comparison

Bar comparison chart for Estimated range. Higher is better · km / mi

Chart data table
VehicleValue
BMW4 Series Gran Coupe (F36)420d
1,326 km
824 mi
BMW4 Series Convertible (F33)420i
909 km
565 mi

Performance spider chart

Radar chart comparing normalized performance and fuel-consumption scores.

Chart data table
VehiclePowerAccelerationTop speed
BMW4 Series Gran Coupe (F36)420d
190 hp
142 kW
7.3 s
231 km/h
144 mph
BMW4 Series Convertible (F33)420i
184 hp
137 kW
8.2 s
230 km/h
143 mph

Most attractive quadrant

Scatter chart with performance score on the X axis and practicality score on the Y axis.

Chart data table
VehiclePerformance scorePracticality score
BMW4 Series Gran Coupe (F36)420d
Power
190 hp
142 kW
0-100 km/h7.3 s
Top speed
231 km/h
144 mph
Doors/seats
5 doors
5 seats
Trunk
480 L
17.0 cu ft
Length
4,638 mm
182.6 in
Height
1,389 mm
54.7 in
BMW4 Series Convertible (F33)420i
Power
184 hp
137 kW
0-100 km/h8.2 s
Top speed
230 km/h
143 mph
Doors/seats
2 doors
4 seats
Trunk
370 L
13.1 cu ft
Length
4,638 mm
182.6 in
Height
1,384 mm
54.5 in

Performance vs fuel economy

Cars closer to the top-right corner combine stronger performance with better fuel economy scores.

Performance vs fuel economy data table
VehiclePerformance scoreFuel economy score
BMW4 Series Gran Coupe (F36)420d
Power
190 hp
142 kW
0-100 km/h7.3 s
Top speed
231 km/h
144 mph
4.3 L/100 km
54.7 mpg US
65.7 mpg UK
BMW4 Series Convertible (F33)420i
Power
184 hp
137 kW
0-100 km/h8.2 s
Top speed
230 km/h
143 mph
6.6 L/100 km
35.6 mpg US
42.8 mpg UK

BMW 4 Series Gran Coupe (F36) 420d is closest to the top-right balance target for performance and fuel economy.

Acceleration vs fuel consumption

Cars closer to the lower-left corner offer a better mix of quick acceleration and low fuel consumption.

Acceleration vs fuel consumption data table
VehicleFuel consumption, L/100 km0-100 km/h, s
BMW4 Series Gran Coupe (F36)420d
4.3 L/100 km
54.7 mpg US
65.7 mpg UK
7.3 s
BMW4 Series Convertible (F33)420i
6.6 L/100 km
35.6 mpg US
42.8 mpg UK
8.2 s

Power-to-weight vs fuel consumption

The shaded area favors higher power-to-weight with lower combined fuel consumption.

Power-to-weight vs fuel consumption data table
VehiclePower-to-weight, hp/tFuel consumption, L/100 km
BMW4 Series Gran Coupe (F36)420d
123 hp/t
92 kW/t
8.1 kg/hp
4.3 L/100 km
54.7 mpg US
65.7 mpg UK
BMW4 Series Convertible (F33)420i
108 hp/t
81 kW/t
9.2 kg/hp
6.6 L/100 km
35.6 mpg US
42.8 mpg UK

Detailed score breakdown

Detailed score breakdown
VehicleBMW4 Series Gran Coupe (F36)420dBMW4 Series Convertible (F33)420i
Power
190 hp
142 kW
184 hp
137 kW
Torque
400 Nm
295 lb-ft
270 Nm
199 lb-ft
Acceleration
7.3 s
8.2 s
Top speed
231 km/h
144 mph
230 km/h
143 mph
Lightness
1,540 kg
3,395 lb
1,700 kg
3,748 lb
Fuel consumption
4.3 L/100 km
54.7 mpg US
65.7 mpg UK
6.6 L/100 km
35.6 mpg US
42.8 mpg UK
Practicality
Doors/seats
5 doors
5 seats
Trunk
480 L
17.0 cu ft
Length
4,638 mm
182.6 in
Height
1,389 mm
54.7 in
Doors/seats
2 doors
4 seats
Trunk
370 L
13.1 cu ft
Length
4,638 mm
182.6 in
Height
1,384 mm
54.5 in
Range score
1,326 km
824 mi
909 km
565 mi
CO2 score
114 g/km
153 g/km
Trunk score
480 L
17.0 cu ft
370 L
13.1 cu ft
Power-to-weight score
123 hp/t
92 kW/t
8.1 kg/hp
108 hp/t
81 kW/t
9.2 kg/hp
Overall
Fixed score
Fixed score

Fuel cost and annual usage

Estimate running costs from combined consumption, your annual distance, and the fuel price in your local currency.

Enter the fuel price in your local currency, for example €/L, $/gal, £/L or any other local currency.

LC = Local Currency

Fuel cost and annual usage
VehicleBMW 4 Series Gran Coupe (F36) 420dBMW 4 Series Convertible (F33) 420i
Consumption4.3 L/100 km54.7 mpg US65.7 mpg UK6.6 L/100 km35.6 mpg US42.8 mpg UK
Cost / 100 km7.52 LC100 km11.55 LC100 km
Cost / 100 mi12.11 LC100 mi18.59 LC100 mi
Annual fuel used645 L170 US gal142 UK gal990 L262 US gal218 UK gal
Annual fuel cost1,129 LC/year1,733 LC/year

Head-to-head comparisons

BMW 4 Series Gran Coupe (F36) 420d

  • Has 6 hp more
  • Has 130 Nm more
  • Is 160 kg lighter
  • Is 0.9 s quicker from 0-100 km/h
  • Has 1 km/h (1 mph) higher top speed
  • Uses 2.3 L/100 km less fuel
  • Has 15 hp/t better power-to-weight
  • Has 416 km (259 mi) more estimated range
  • Has 110 L more trunk volume
  • Emits 39 g/km less CO2

Pros

  • Quickest 0-100 km/h in this comparison
  • Highest top speed
  • Most powerful
  • Highest torque
  • Lightest
  • Lowest combined fuel consumption
  • Best power-to-weight ratio
  • Best estimated range
  • Largest trunk

BMW 4 Series Convertible (F33) 420i

No measurable advantages in the available data.

Cons

  • Slowest 0-100 km/h
  • Lowest power
  • Highest combined fuel consumption
  • Heaviest
  • Lowest top speed
  • Smallest trunk
  • Highest CO2 emissions

Choose cars to compare

Brand
Model
Generation
Engine or modification
BMW 4 Series Gran Coupe (F36) 420d
BMW 4 Series Convertible (F33) 420i
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