Car comparison

BMW 4 Series Gran Coupe (F36) 420dvsBMW 4 Series Convertible (F33) · Facelift 2017 420d

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

New comparison

BMW 4 Series Gran Coupe (F36)

420d

184 hp1995 ccDieselRWDManualTurbochargedCoupe2014-2015

BMW 4 Series Convertible (F33) · Facelift 2017

420d

190 hp1995 ccDieselRWDManualTurbochargedCabriolet / convertible2017-2020

Comparison overview

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

BMW 4 Series Gran Coupe (F36) 420d

Quickest 0-100 km/h
7.7 s
Fastest top speed
236 km/h
147 mph
Lightest
1,510 kg
3,329 lb
Best power-to-weight
122 hp/t
91 kW/t
8.2 kg/hp
Lowest combined fuel consumption
4.7 L/100 km
50.0 mpg US
60.1 mpg UK
Lowest city consumption
5.8 L/100 km
40.6 mpg US
48.7 mpg UK
Lowest highway consumption
4.1 L/100 km
57.4 mpg US
68.9 mpg UK
Lowest CO2 emissions
124 g/km
Best estimated range
1,213 km
754 mi
Largest trunk
480 L
Best overall score
57/100
Best performance score
52/100
Best economy score
94/100
Best practicality score
68/100

BMW 4 Series Convertible (F33) Facelift 2017 420d

Most powerful
190 hp
142 kW
Highest torque
400 Nm
295 lb-ft

Specification comparison

Specification comparison
Model	BMW4 Series Gran Coupe (F36)420d	BMW4 Series Convertible (F33)Facelift 2017420d
Power	184hp137kW	190hp142kW
Torque	380Nm280lb-ft	400Nm295lb-ft
Curb weight	1,510kg3,329lb	1,700kg3,748lb
Gross weight	2,070kg4,564lb	2,170kg4,784lb
Top speed	236 km/h 147 mph	235 km/h 146 mph
To 99% top speed	96.1s99% target: 234 km/h / 145 mph Calculated	104.4s99% target: 233 km/h / 145 mph Calculated
0-100 km/h	7.7s	8.1s
0-200 km/h	33.1s Calculated	36.0s Calculated
0-60 mph	7.3s Calculated	7.7s Calculated
Fuel consumption	4.7L/100 km50mpg US60.1mpg UK	5.1L/100 km46.1mpg US55.4mpg UK
Fuel consumption city	5.8L/100 km40.6mpg US48.7mpg UK	6.1L/100 km38.6mpg US46.3mpg UK
Fuel consumption highway	4.1L/100 km57.4mpg US68.9mpg UK	4.5L/100 km52.3mpg US62.8mpg UK
Quarter mile	15.5s Calculated	15.8s Calculated
Power-to-weight	122hp/t91kW/t55hp/1000 lb Calculated	112hp/t83kW/t51hp/1000 lb Calculated
Torque-to-weight	252Nm/t168lb-ft/ton Calculated	235Nm/t157lb-ft/ton Calculated
Estimated range	1,213km754mi Calculated	1,118km694mi Calculated
Displacement	1,995cc122cu in	1,995cc122cu in
Length	4,638mm183in	4,640mm183in
Width	1,825mm72in	1,825mm72in
Height	1,389mm55in	1,384mm54in
Wheelbase	2,810mm111in	2,810mm111in
Front track	1,545mm61in	1,544mm61in
Rear track	1,594mm63in	1,593mm63in
Ground clearance	130mm5in	130mm5in
Trunk volume	480L	370L
Max trunk volume	1,300L	-
Doors	5	2
Seats	5	4
Fuel tank	57L	57L
CO2 emissions	124g/km	134g/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) Facelift 2017 420dPowerTorque

Dyno simulation data table
Vehicle	Peak power RPM	Peak torque RPM	Max engine speed
BMW4 Series Gran Coupe (F36)420d	4,000 rpm	1,750-2,750 rpm	4,250 rpm
BMW4 Series Convertible (F33)Facelift 2017420d	4,000 rpm	1,750-2,500 rpm	4,250 rpm

Acceleration curve

Estimated speed over time for selected vehicles.

Acceleration and drag-race table
Metric	BMW4 Series Gran Coupe (F36)420d	BMW4 Series Convertible (F33)Facelift 2017420d
	Acceleration checkpoints
0-60 mph 0-97 km/h	7.3 s	7.7 s
0-100 km/h 0-62 mph	7.7 s	8.1 s
0-200 km/h 0-124 mph	33.1 s	36.0 s
Top speed	236 km/h 147 mph	235 km/h 146 mph
	Drag race simulation
60 ft 18 m	2.5 s	2.6 s
330 ft 101 m	6.7 s	6.9 s
1/8 mile 201 m	10.2 s	10.3 s
1000 ft 305 m	13.1 s	13.3 s
1/4 mile 402 m	15.5 s	15.8 s
Trap speed 1/4 mile 402 m	149 km/h 92 mph	146 km/h 90 mph

Power comparison

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

Chart data table
Vehicle	Value
BMW4 Series Gran Coupe (F36)420d	184 hp 137 kW
BMW4 Series Convertible (F33)Facelift 2017420d	190 hp 142 kW

BMW 4 Series Convertible (F33) Facelift 2017 420d has 6 hp more than BMW 4 Series Gran Coupe (F36) 420d.

The biggest power difference is between BMW 4 Series Gran Coupe (F36) 420d and BMW 4 Series Convertible (F33) Facelift 2017 420d: 6 hp (4 kW).

Torque comparison

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

Chart data table
Vehicle	Value
BMW4 Series Gran Coupe (F36)420d	380 Nm 280 lb-ft
BMW4 Series Convertible (F33)Facelift 2017420d	400 Nm 295 lb-ft

Curb weight comparison

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

Chart data table
Vehicle	Value
BMW4 Series Gran Coupe (F36)420d	1,510 kg 3,329 lb
BMW4 Series Convertible (F33)Facelift 2017420d	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
Vehicle	Value
BMW4 Series Gran Coupe (F36)420d	236 km/h 147 mph
BMW4 Series Convertible (F33)Facelift 2017420d	235 km/h 146 mph

0-100 km/h comparison

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

Chart data table
Vehicle	Value
BMW4 Series Gran Coupe (F36)420d	7.7 s
BMW4 Series Convertible (F33)Facelift 2017420d	8.1 s

Although BMW 4 Series Convertible (F33) Facelift 2017 420d has more power, BMW 4 Series Gran Coupe (F36) 420d is quicker from 0-100 km/h.

The biggest 0-100 km/h difference is between BMW 4 Series Gran Coupe (F36) 420d and BMW 4 Series Convertible (F33) Facelift 2017 420d: 0.4 s.

Fuel consumption comparison

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

Chart data table
Vehicle	Value
BMW4 Series Gran Coupe (F36)420d	4.7 L/100 km 50.0 mpg US 60.1 mpg UK
BMW4 Series Convertible (F33)Facelift 2017420d	5.1 L/100 km 46.1 mpg US 55.4 mpg UK

Power-to-weight comparison

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

Chart data table
Vehicle	Value
BMW4 Series Gran Coupe (F36)420d	122 hp/t 91 kW/t 8.2 kg/hp
BMW4 Series Convertible (F33)Facelift 2017420d	112 hp/t 83 kW/t 8.9 kg/hp

Estimated range comparison

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

Chart data table
Vehicle	Value
BMW4 Series Gran Coupe (F36)420d	1,213 km 754 mi
BMW4 Series Convertible (F33)Facelift 2017420d	1,118 km 694 mi

Performance spider chart

Radar chart comparing normalized performance and fuel-consumption scores.

Chart data table
Vehicle	Power	Acceleration	Top speed
BMW4 Series Gran Coupe (F36)420d	184 hp 137 kW	7.7 s	236 km/h 147 mph
BMW4 Series Convertible (F33)Facelift 2017420d	190 hp 142 kW	8.1 s	235 km/h 146 mph

Most attractive quadrant

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

Vehicle

Performance score

Practicality score

BMW4 Series Gran Coupe (F36)420d

Power	184 hp 137 kW
0-100 km/h	7.7 s
Top speed 236 km/h 147 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)Facelift 2017420d

Power	190 hp 142 kW
0-100 km/h	8.1 s
Top speed 235 km/h 146 mph

Doors/seats	2 doors 4 seats
Trunk	370 L 13.1 cu ft
Length	4,640 mm 182.7 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.

Vehicle

Performance score

Fuel economy score

BMW4 Series Gran Coupe (F36)420d

Power	184 hp 137 kW
0-100 km/h	7.7 s
Top speed 236 km/h 147 mph

4.7 L/100 km

50.0 mpg US

60.1 mpg UK

BMW4 Series Convertible (F33)Facelift 2017420d

Power	190 hp 142 kW
0-100 km/h	8.1 s
Top speed 235 km/h 146 mph

5.1 L/100 km

46.1 mpg US

55.4 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
Vehicle	Fuel consumption, L/100 km	0-100 km/h, s
BMW4 Series Gran Coupe (F36)420d	4.7 L/100 km 50.0 mpg US 60.1 mpg UK	7.7 s
BMW4 Series Convertible (F33)Facelift 2017420d	5.1 L/100 km 46.1 mpg US 55.4 mpg UK	8.1 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
Vehicle	Power-to-weight, hp/t	Fuel consumption, L/100 km
BMW4 Series Gran Coupe (F36)420d	122 hp/t 91 kW/t 8.2 kg/hp	4.7 L/100 km 50.0 mpg US 60.1 mpg UK
BMW4 Series Convertible (F33)Facelift 2017420d	112 hp/t 83 kW/t 8.9 kg/hp	5.1 L/100 km 46.1 mpg US 55.4 mpg UK

Detailed score breakdown

Vehicle

BMW4 Series Gran Coupe (F36)420d

BMW4 Series Convertible (F33)Facelift 2017420d

Power

184 hp

137 kW

190 hp

142 kW

Torque

380 Nm

280 lb-ft

400 Nm

295 lb-ft

Acceleration

7.7 s

8.1 s

Top speed

236 km/h

147 mph

235 km/h

146 mph

Lightness

1,510 kg

3,329 lb

1,700 kg

3,748 lb

Fuel consumption

4.7 L/100 km

50.0 mpg US

60.1 mpg UK

5.1 L/100 km

46.1 mpg US

55.4 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	4,640 mm 182.7 in
Height	1,384 mm 54.5 in

Range score

1,213 km

754 mi

1,118 km

694 mi

CO2 score

124 g/km

134 g/km

Trunk score

480 L

17.0 cu ft

370 L

13.1 cu ft

Power-to-weight score

122 hp/t

91 kW/t

8.2 kg/hp

112 hp/t

83 kW/t

8.9 kg/hp

Overall

Fixed score

Fuel cost and annual usage

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

Average annual distanceDistance unitFuel price in your local currencyPrice unit

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
Vehicle	BMW 4 Series Gran Coupe (F36) 420d	BMW 4 Series Convertible (F33) Facelift 2017 420d
Consumption	4.7 L/100 km50 mpg US60.1 mpg UK	5.1 L/100 km46.1 mpg US55.4 mpg UK
Cost / 100 km	8.23 LC100 km	8.92 LC100 km
Cost / 100 mi	13.24 LC100 mi	14.36 LC100 mi
Annual fuel used	705 L186 US gal155 UK gal	765 L202 US gal168 UK gal
Annual fuel cost	1,234 LC/year	1,339 LC/year