Car comparison

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

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

New comparison

BMW 4 Series Convertible (F33)

420d

184 hp1995 ccDieselRWDManualTurbochargedCabriolet / convertible2014-2015
VS

BMW 4 Series Gran Coupe (F36)

420d

184 hp1995 ccDieselAWDManualTurbochargedCoupe2014-2015

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
    7.7 s
  • Lightest
    1,585 kg
    3,494 lb
  • Best power-to-weight
    116 hp/t
    87 kW/t
    8.6 kg/hp
  • Lowest combined fuel consumption
    4.9 L/100 km
    48.0 mpg US
    57.6 mpg UK
  • Lowest highway consumption
    4.2 L/100 km
    56.0 mpg US
    67.3 mpg UK
  • Lowest CO2 emissions
    129 g/km
  • Best estimated range
    1,163 km
    723 mi
  • Largest trunk
    480 L
  • Best overall score
    56/100
  • Best performance score
    51/100
  • Best economy score
    94/100
  • Best practicality score
    68/100

BMW 4 Series Convertible (F33) 420d

  • Fastest top speed
    235 km/h
    146 mph
  • Most powerful
    184 hp
    137 kW
  • Highest torque
    380 Nm
    280 lb-ft
  • Lowest city consumption
    6.0 L/100 km
    39.2 mpg US
    47.1 mpg UK

Specification comparison

Specification comparison
ModelBMW4 Series Convertible (F33)420dBMW4 Series Gran Coupe (F36)420d
Power
184hp137kW
184hp137kW
Torque
380Nm280lb-ft
380Nm280lb-ft
Curb weight
1,680kg3,704lb
1,585kg3,494lb
Gross weight
2,150kg4,740lb
2,145kg4,729lb
Top speed
235 km/h
146 mph
234 km/h
145 mph
To 99% top speed
105.9s99% target: 233 km/h / 145 mph
Calculated
98.1s99% target: 232 km/h / 144 mph
Calculated
0-100 km/h
8.2s
7.7s
0-200 km/h
36.5s
Calculated
34.4s
Calculated
0-60 mph
7.8s
Calculated
7.3s
Calculated
Fuel consumption
5.1L/100 km46.1mpg US55.4mpg UK
4.9L/100 km48mpg US57.6mpg UK
Fuel consumption city
6L/100 km39.2mpg US47.1mpg UK
6.1L/100 km38.6mpg US46.3mpg UK
Fuel consumption highway
4.5L/100 km52.3mpg US62.8mpg UK
4.2L/100 km56mpg US67.3mpg UK
Quarter mile
15.9s
Calculated
15.6s
Calculated
Power-to-weight
110hp/t82kW/t50hp/1000 lb
Calculated
116hp/t87kW/t53hp/1000 lb
Calculated
Torque-to-weight
226Nm/t151lb-ft/ton
Calculated
240Nm/t160lb-ft/ton
Calculated
Estimated range
1,118km694mi
Calculated
1,163km723mi
Calculated
Displacement
1,995cc122cu in
1,995cc122cu in
Length
4,638mm183in
4,638mm183in
Width
1,825mm72in
1,825mm72in
Height
1,384mm54in
1,404mm55in
Wheelbase
2,810mm111in
2,810mm111in
Front track
1,545mm61in
1,544mm61in
Rear track
1,594mm63in
1,590mm63in
Ground clearance
130mm5in
145mm6in
Trunk volume
220L
480L
Max trunk volume
370L
1,300L
Doors
2
5
Seats
4
5
Fuel tank
57L
57L
CO2 emissions
133g/km
129g/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 Convertible (F33) 420dBMW 4 Series Gran Coupe (F36) 420dPowerTorque
  • BMW 4 Series Convertible (F33) 420d: Power / Torque
  • BMW 4 Series Gran Coupe (F36) 420d: Power / Torque
Dyno simulation data table
VehiclePeak power RPMPeak torque RPMMax engine speed
BMW4 Series Convertible (F33)420d4,000 rpm1,750-2,750 rpm4,250 rpm
BMW4 Series Gran Coupe (F36)420d4,000 rpm1,750-2,750 rpm4,250 rpm

Acceleration curve

Estimated speed over time for selected vehicles.

Acceleration and drag-race table
MetricBMW4 Series Convertible (F33)420dBMW4 Series Gran Coupe (F36)420d
Acceleration checkpoints
0-60 mph
0-97 km/h
7.8 s
7.3 s
0-100 km/h
0-62 mph
8.2 s
7.7 s
0-200 km/h
0-124 mph
36.5 s
34.4 s
Top speed
235 km/h
146 mph
234 km/h
145 mph
Drag race simulation
60 ft
18 m
2.6 s
2.5 s
330 ft
101 m
6.9 s
6.7 s
1/8 mile
201 m
10.4 s
10.1 s
1000 ft
305 m
13.4 s
13.1 s
1/4 mile
402 m
15.9 s
15.6 s
Trap speed
1/4 mile
402 m
145 km/h
90 mph
148 km/h
92 mph

Power comparison

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

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

Torque comparison

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

Chart data table
VehicleValue
BMW4 Series Convertible (F33)420d
380 Nm
280 lb-ft
BMW4 Series Gran Coupe (F36)420d
380 Nm
280 lb-ft

Curb weight comparison

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

Chart data table
VehicleValue
BMW4 Series Convertible (F33)420d
1,680 kg
3,704 lb
BMW4 Series Gran Coupe (F36)420d
1,585 kg
3,494 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 Convertible (F33)420d
235 km/h
146 mph
BMW4 Series Gran Coupe (F36)420d
234 km/h
145 mph

0-100 km/h comparison

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

Chart data table
VehicleValue
BMW4 Series Convertible (F33)420d8.2 s
BMW4 Series Gran Coupe (F36)420d7.7 s

The biggest 0-100 km/h difference is between BMW 4 Series Gran Coupe (F36) 420d and BMW 4 Series Convertible (F33) 420d: 0.5 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 Convertible (F33)420d
5.1 L/100 km
46.1 mpg US
55.4 mpg UK
BMW4 Series Gran Coupe (F36)420d
4.9 L/100 km
48.0 mpg US
57.6 mpg UK

Power-to-weight comparison

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

Chart data table
VehicleValue
BMW4 Series Convertible (F33)420d
110 hp/t
82 kW/t
9.1 kg/hp
BMW4 Series Gran Coupe (F36)420d
116 hp/t
87 kW/t
8.6 kg/hp

Estimated range comparison

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

Chart data table
VehicleValue
BMW4 Series Convertible (F33)420d
1,118 km
694 mi
BMW4 Series Gran Coupe (F36)420d
1,163 km
723 mi

Performance spider chart

Radar chart comparing normalized performance and fuel-consumption scores.

Chart data table
VehiclePowerAccelerationTop speed
BMW4 Series Convertible (F33)420d
184 hp
137 kW
8.2 s
235 km/h
146 mph
BMW4 Series Gran Coupe (F36)420d
184 hp
137 kW
7.7 s
234 km/h
145 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 Convertible (F33)420d
Power
184 hp
137 kW
0-100 km/h8.2 s
Top speed
235 km/h
146 mph
Doors/seats
2 doors
4 seats
Trunk
220 L
7.8 cu ft
Length
4,638 mm
182.6 in
Height
1,384 mm
54.5 in
BMW4 Series Gran Coupe (F36)420d
Power
184 hp
137 kW
0-100 km/h7.7 s
Top speed
234 km/h
145 mph
Doors/seats
5 doors
5 seats
Trunk
480 L
17.0 cu ft
Length
4,638 mm
182.6 in
Height
1,404 mm
55.3 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 Convertible (F33)420d
Power
184 hp
137 kW
0-100 km/h8.2 s
Top speed
235 km/h
146 mph
5.1 L/100 km
46.1 mpg US
55.4 mpg UK
BMW4 Series Gran Coupe (F36)420d
Power
184 hp
137 kW
0-100 km/h7.7 s
Top speed
234 km/h
145 mph
4.9 L/100 km
48.0 mpg US
57.6 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 Convertible (F33)420d
5.1 L/100 km
46.1 mpg US
55.4 mpg UK
8.2 s
BMW4 Series Gran Coupe (F36)420d
4.9 L/100 km
48.0 mpg US
57.6 mpg UK
7.7 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 Convertible (F33)420d
110 hp/t
82 kW/t
9.1 kg/hp
5.1 L/100 km
46.1 mpg US
55.4 mpg UK
BMW4 Series Gran Coupe (F36)420d
116 hp/t
87 kW/t
8.6 kg/hp
4.9 L/100 km
48.0 mpg US
57.6 mpg UK

Detailed score breakdown

Detailed score breakdown
VehicleBMW4 Series Convertible (F33)420dBMW4 Series Gran Coupe (F36)420d
Power
184 hp
137 kW
184 hp
137 kW
Torque
380 Nm
280 lb-ft
380 Nm
280 lb-ft
Acceleration
8.2 s
7.7 s
Top speed
235 km/h
146 mph
234 km/h
145 mph
Lightness
1,680 kg
3,704 lb
1,585 kg
3,494 lb
Fuel consumption
5.1 L/100 km
46.1 mpg US
55.4 mpg UK
4.9 L/100 km
48.0 mpg US
57.6 mpg UK
Practicality
Doors/seats
2 doors
4 seats
Trunk
220 L
7.8 cu ft
Length
4,638 mm
182.6 in
Height
1,384 mm
54.5 in
Doors/seats
5 doors
5 seats
Trunk
480 L
17.0 cu ft
Length
4,638 mm
182.6 in
Height
1,404 mm
55.3 in
Range score
1,118 km
694 mi
1,163 km
723 mi
CO2 score
133 g/km
129 g/km
Trunk score
220 L
7.8 cu ft
480 L
17.0 cu ft
Power-to-weight score
110 hp/t
82 kW/t
9.1 kg/hp
116 hp/t
87 kW/t
8.6 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 Convertible (F33) 420dBMW 4 Series Gran Coupe (F36) 420d
Consumption5.1 L/100 km46.1 mpg US55.4 mpg UK4.9 L/100 km48 mpg US57.6 mpg UK
Cost / 100 km8.92 LC100 km8.58 LC100 km
Cost / 100 mi14.36 LC100 mi13.80 LC100 mi
Annual fuel used765 L202 US gal168 UK gal735 L194 US gal162 UK gal
Annual fuel cost1,339 LC/year1,286 LC/year

Head-to-head comparisons

BMW 4 Series Convertible (F33) 420d

  • Has 1 km/h (1 mph) higher top speed

Pros

  • Highest top speed
  • Most powerful
  • Highest torque

Cons

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

BMW 4 Series Gran Coupe (F36) 420d

  • Is 95 kg lighter
  • Is 0.5 s quicker from 0-100 km/h
  • Uses 0.2 L/100 km less fuel
  • Has 7 hp/t better power-to-weight
  • Has 46 km (28 mi) more estimated range
  • Has 260 L more trunk volume
  • Emits 4 g/km less CO2

Pros

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

Cons

  • Lowest top speed

Choose cars to compare

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