Car comparison

BMW 4 Series Convertible (F33) · Facelift 2017 420dvsBMW X4 (G02) 20d

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

New comparison

BMW 4 Series Convertible (F33) · Facelift 2017

420d

190 hp1995 ccDieselRWDAutomaticTurbochargedCabriolet / convertible2017-2020

BMW X4 (G02)

20d

190 hp1995 ccDieselAWDAutomaticTurbocharged2018-2020

Comparison overview

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

BMW 4 Series Convertible (F33) Facelift 2017 420d

Quickest 0-100 km/h
8.0 s
Fastest top speed
228 km/h
142 mph
Most powerful
190 hp
142 kW
Highest torque
400 Nm
295 lb-ft
Lightest
1,715 kg
3,781 lb
Best power-to-weight
111 hp/t
83 kW/t
9.0 kg/hp
Lowest combined fuel consumption
4.7 L/100 km
50.0 mpg US
60.1 mpg UK
Lowest city consumption
5.6 L/100 km
42.0 mpg US
50.4 mpg UK
Lowest highway consumption
4.2 L/100 km
56.0 mpg US
67.3 mpg UK
Lowest CO2 emissions
124 g/km
Best estimated range
1,213 km
754 mi
Best performance score
50/100
Best economy score
94/100

BMW X4 (G02) 20d

Largest trunk
525 L
Best overall score
57/100
Best practicality score
76/100

Specification comparison

Specification comparison
Model	BMW4 Series Convertible (F33)Facelift 2017420d	BMWX4 (G02)20d
Power	190hp142kW	190hp142kW
Torque	400Nm295lb-ft	400Nm295lb-ft
Curb weight	1,715kg3,781lb	1,740kg3,836lb
Gross weight	2,185kg4,817lb	2,400kg5,291lb
Top speed	228 km/h 142 mph	213 km/h 132 mph
To 99% top speed	98.2s99% target: 226 km/h / 140 mph Calculated	96.3s99% target: 211 km/h / 131 mph Calculated
0-100 km/h	8.0s	8.0s
0-200 km/h	38.0s Calculated	51.5s Calculated
0-60 mph	7.6s Calculated	7.5s Calculated
Fuel consumption	4.7L/100 km50mpg US60.1mpg UK	5.6L/100 km42mpg US50.4mpg UK
Fuel consumption city	5.6L/100 km42mpg US50.4mpg UK	6.3L/100 km37.3mpg US44.8mpg UK
Fuel consumption highway	4.2L/100 km56mpg US67.3mpg UK	5.3L/100 km44.4mpg US53.3mpg UK
Quarter mile	15.8s Calculated	15.8s Calculated
Power-to-weight	111hp/t83kW/t50hp/1000 lb Calculated	109hp/t81kW/t50hp/1000 lb Calculated
Torque-to-weight	233Nm/t156lb-ft/ton Calculated	230Nm/t154lb-ft/ton Calculated
Estimated range	1,213km754mi Calculated	1,071km666mi Calculated
Displacement	1,995cc122cu in	1,995cc122cu in
Length	4,640mm183in	4,752mm187in
Width	1,825mm72in	1,918mm76in
Height	1,384mm54in	1,621mm64in
Wheelbase	2,810mm111in	2,864mm113in
Front track	1,544mm61in	1,620mm64in
Rear track	1,593mm63in	1,666mm66in
Ground clearance	130mm5in	204mm8in
Trunk volume	370L	525L
Max trunk volume	-	1,430L
Doors	2	5
Seats	4	5
Fuel tank	57L	60L
CO2 emissions	124g/km	149g/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) Facelift 2017 420dBMW X4 (G02) 20dPowerTorque

Dyno simulation data table
Vehicle	Peak power RPM	Peak torque RPM	Max engine speed
BMW4 Series Convertible (F33)Facelift 2017420d	4,000 rpm	1,750-2,500 rpm	4,250 rpm
BMWX4 (G02)20d	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 Convertible (F33)Facelift 2017420d	BMWX4 (G02)20d
	Acceleration checkpoints
0-60 mph 0-97 km/h	7.6 s	7.5 s
0-100 km/h 0-62 mph	8.0 s	8.0 s
0-200 km/h 0-124 mph	38.0 s	51.5 s
Top speed	228 km/h 142 mph	213 km/h 132 mph
	Drag race simulation
60 ft 18 m	2.5 s	2.4 s
330 ft 101 m	6.8 s	6.7 s
1/8 mile 201 m	10.3 s	10.2 s
1000 ft 305 m	13.3 s	13.2 s
1/4 mile 402 m	15.8 s	15.8 s
Trap speed 1/4 mile 402 m	145 km/h 90 mph	141 km/h 88 mph

Power comparison

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

Chart data table
Vehicle	Value
BMW4 Series Convertible (F33)Facelift 2017420d	190 hp 142 kW
BMWX4 (G02)20d	190 hp 142 kW

Torque comparison

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

Chart data table
Vehicle	Value
BMW4 Series Convertible (F33)Facelift 2017420d	400 Nm 295 lb-ft
BMWX4 (G02)20d	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 Convertible (F33)Facelift 2017420d	1,715 kg 3,781 lb
BMWX4 (G02)20d	1,740 kg 3,836 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 Convertible (F33)Facelift 2017420d	228 km/h 142 mph
BMWX4 (G02)20d	213 km/h 132 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 Convertible (F33)Facelift 2017420d	8.0 s
BMWX4 (G02)20d	8.0 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 Convertible (F33)Facelift 2017420d	4.7 L/100 km 50.0 mpg US 60.1 mpg UK
BMWX4 (G02)20d	5.6 L/100 km 42.0 mpg US 50.4 mpg UK

The biggest fuel consumption difference is between BMW 4 Series Convertible (F33) Facelift 2017 420d and BMW X4 (G02) 20d: 0.9 L/100 km.

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 Convertible (F33)Facelift 2017420d	111 hp/t 83 kW/t 9.0 kg/hp
BMWX4 (G02)20d	109 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
Vehicle	Value
BMW4 Series Convertible (F33)Facelift 2017420d	1,213 km 754 mi
BMWX4 (G02)20d	1,071 km 666 mi

Performance spider chart

Radar chart comparing normalized performance and fuel-consumption scores.

Chart data table
Vehicle	Power	Acceleration	Top speed
BMW4 Series Convertible (F33)Facelift 2017420d	190 hp 142 kW	8.0 s	228 km/h 142 mph
BMWX4 (G02)20d	190 hp 142 kW	8.0 s	213 km/h 132 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 Convertible (F33)Facelift 2017420d

Power	190 hp 142 kW
0-100 km/h	8.0 s
Top speed 228 km/h 142 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

BMWX4 (G02)20d

Power	190 hp 142 kW
0-100 km/h	8.0 s
Top speed 213 km/h 132 mph

Doors/seats	5 doors 5 seats
Trunk	525 L 18.5 cu ft
Length	4,752 mm 187.1 in
Height	1,621 mm 63.8 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 Convertible (F33)Facelift 2017420d

Power	190 hp 142 kW
0-100 km/h	8.0 s
Top speed 228 km/h 142 mph

4.7 L/100 km

50.0 mpg US

60.1 mpg UK

BMWX4 (G02)20d

Power	190 hp 142 kW
0-100 km/h	8.0 s
Top speed 213 km/h 132 mph

5.6 L/100 km

42.0 mpg US

50.4 mpg UK

BMW 4 Series Convertible (F33) Facelift 2017 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 Convertible (F33)Facelift 2017420d	4.7 L/100 km 50.0 mpg US 60.1 mpg UK	8.0 s
BMWX4 (G02)20d	5.6 L/100 km 42.0 mpg US 50.4 mpg UK	8.0 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 Convertible (F33)Facelift 2017420d	111 hp/t 83 kW/t 9.0 kg/hp	4.7 L/100 km 50.0 mpg US 60.1 mpg UK
BMWX4 (G02)20d	109 hp/t 81 kW/t 9.2 kg/hp	5.6 L/100 km 42.0 mpg US 50.4 mpg UK

Detailed score breakdown

Vehicle

BMW4 Series Convertible (F33)Facelift 2017420d

BMWX4 (G02)20d

Power

190 hp

142 kW

190 hp

142 kW

Torque

400 Nm

295 lb-ft

400 Nm

295 lb-ft

Acceleration

8.0 s

Top speed

228 km/h

142 mph

213 km/h

132 mph

Lightness

1,715 kg

3,781 lb

1,740 kg

3,836 lb

Fuel consumption

4.7 L/100 km

50.0 mpg US

60.1 mpg UK

5.6 L/100 km

42.0 mpg US

50.4 mpg UK

Practicality

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

Doors/seats	5 doors 5 seats
Trunk	525 L 18.5 cu ft
Length	4,752 mm 187.1 in
Height	1,621 mm 63.8 in

Range score

1,213 km

754 mi

1,071 km

666 mi

CO2 score

124 g/km

149 g/km

Trunk score

370 L

13.1 cu ft

525 L

18.5 cu ft

Power-to-weight score

111 hp/t

83 kW/t

9.0 kg/hp

109 hp/t

81 kW/t

9.2 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 Convertible (F33) Facelift 2017 420d	BMW X4 (G02) 20d
Consumption	4.7 L/100 km50 mpg US60.1 mpg UK	5.6 L/100 km42 mpg US50.4 mpg UK
Cost / 100 km	8.23 LC100 km	9.80 LC100 km
Cost / 100 mi	13.24 LC100 mi	15.77 LC100 mi
Annual fuel used	705 L186 US gal155 UK gal	840 L222 US gal185 UK gal
Annual fuel cost	1,234 LC/year	1,470 LC/year