Car comparison

BMW 4 Series Convertible (F33) · Facelift 2017 440ivsBMW X4 (G02) M40d

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

New comparison

BMW 4 Series Convertible (F33) · Facelift 2017

440i

326 hp2998 ccGasolineAWDAutomaticTurbochargedCabriolet / convertible2017-2020

BMW X4 (G02)

M40d

326 hp2993 ccDieselAWDAutomaticTurbocharged2018-2020

Comparison overview

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

BMW X4 (G02) M40d

Quickest 0-100 km/h
4.9 s
Highest torque
680 Nm
502 lb-ft
Lowest combined fuel consumption
6.6 L/100 km
35.6 mpg US
42.8 mpg UK
Lowest city consumption
7.3 L/100 km
32.2 mpg US
38.7 mpg UK
Lowest CO2 emissions
173 g/km
Best estimated range
1,030 km
640 mi
Largest trunk
525 L
Best overall score
73/100
Best performance score
72/100
Best economy score
89/100
Best practicality score
76/100

BMW 4 Series Convertible (F33) Facelift 2017 440i

Fastest top speed
260 km/h
162 mph Unrestricted
250 km/h
155 mph Restricted
Most powerful
326 hp
243 kW
Lightest
1,850 kg
4,079 lb
Best power-to-weight
176 hp/t
131 kW/t
5.7 kg/hp
Lowest highway consumption
6.1 L/100 km
38.6 mpg US
46.3 mpg UK

Specification comparison

Specification comparison
Model	BMW4 Series Convertible (F33)Facelift 2017440i	BMWX4 (G02)M40d
Power	326hp243kW	326hp243kW
Torque	450Nm332lb-ft	680Nm502lb-ft
Curb weight	1,850kg4,079lb	1,895kg4,178lb
Gross weight	2,300kg5,071lb	2,525kg5,567lb
Top speed	Unrestricted 260 km/h162 mph Restricted 250 km/h155 mph Calculated	250 km/h 155 mph
To 99% top speed	77.7s99% target: 257 km/h / 160 mph Calculated	72.7s99% target: 248 km/h / 154 mph Calculated
0-100 km/h	5.4s	4.9s
0-200 km/h	20.0s Calculated	20.0s Calculated
0-60 mph	5.1s Calculated	4.6s Calculated
Fuel consumption	7.6L/100 km30.9mpg US37.2mpg UK	6.6L/100 km35.6mpg US42.8mpg UK
Fuel consumption city	10.3L/100 km22.8mpg US27.4mpg UK	7.3L/100 km32.2mpg US38.7mpg UK
Fuel consumption highway	6.1L/100 km38.6mpg US46.3mpg UK	6.3L/100 km37.3mpg US44.8mpg UK
Quarter mile	13.6s Calculated	13.2s Calculated
Power-to-weight	176hp/t131kW/t80hp/1000 lb Calculated	172hp/t128kW/t78hp/1000 lb Calculated
Torque-to-weight	243Nm/t163lb-ft/ton Calculated	359Nm/t240lb-ft/ton Calculated
Estimated range	789km491mi Calculated	1,030km640mi Calculated
Displacement	2,998cc183cu in	2,993cc183cu in
Length	4,640mm183in	4,752mm187in
Width	1,825mm72in	1,938mm76in
Height	1,399mm55in	1,621mm64in
Wheelbase	2,810mm111in	2,864mm113in
Front track	1,543mm61in	1,615mm64in
Rear track	1,593mm63in	1,624mm64in
Ground clearance	145mm6in	204mm8in
Trunk volume	370L	525L
Max trunk volume	-	1,430L
Doors	2	5
Seats	4	5
Fuel tank	60L	68L
CO2 emissions	177g/km	173g/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 440iBMW X4 (G02) M40dPowerTorque

Dyno simulation data table
Vehicle	Peak power RPM	Peak torque RPM	Max engine speed
BMW4 Series Convertible (F33)Facelift 2017440i	5,500 rpm	1,380-5,000 rpm	5,750 rpm
BMWX4 (G02)M40d	4,400 rpm	1,750-2,750 rpm	4,650 rpm

Acceleration curve

Estimated speed over time for selected vehicles.

Acceleration and drag-race table
Metric	BMW4 Series Convertible (F33)Facelift 2017440i	BMWX4 (G02)M40d
	Acceleration checkpoints
0-60 mph 0-97 km/h	5.1 s	4.6 s
0-100 km/h 0-62 mph	5.4 s	4.9 s
0-200 km/h 0-124 mph	20.0 s	20.0 s
Top speed	Unrestricted 260 km/h162 mph Restricted 250 km/h155 mph Likely limited	250 km/h 155 mph
	Drag race simulation
60 ft 18 m	2.2 s	2.1 s
330 ft 101 m	5.9 s	5.6 s
1/8 mile 201 m	8.8 s	8.5 s
1000 ft 305 m	11.4 s	11.0 s
1/4 mile 402 m	13.6 s	13.2 s
Trap speed 1/4 mile 402 m	170 km/h 105 mph	170 km/h 106 mph

Power comparison

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

Chart data table
Vehicle	Value
BMW4 Series Convertible (F33)Facelift 2017440i	326 hp 243 kW
BMWX4 (G02)M40d	326 hp 243 kW

Torque comparison

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

Chart data table
Vehicle	Value
BMW4 Series Convertible (F33)Facelift 2017440i	450 Nm 332 lb-ft
BMWX4 (G02)M40d	680 Nm 502 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 2017440i	1,850 kg 4,079 lb
BMWX4 (G02)M40d	1,895 kg 4,178 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 2017440i	Unrestricted 260 km/h162 mph Restricted 250 km/h155 mph
BMWX4 (G02)M40d	250 km/h 155 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 2017440i	5.4 s
BMWX4 (G02)M40d	4.9 s

The biggest 0-100 km/h difference is between BMW X4 (G02) M40d and BMW 4 Series Convertible (F33) Facelift 2017 440i: 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
Vehicle	Value
BMW4 Series Convertible (F33)Facelift 2017440i	7.6 L/100 km 30.9 mpg US 37.2 mpg UK
BMWX4 (G02)M40d	6.6 L/100 km 35.6 mpg US 42.8 mpg UK

The biggest fuel consumption difference is between BMW X4 (G02) M40d and BMW 4 Series Convertible (F33) Facelift 2017 440i: 1.0 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 2017440i	176 hp/t 131 kW/t 5.7 kg/hp
BMWX4 (G02)M40d	172 hp/t 128 kW/t 5.8 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 2017440i	789 km 491 mi
BMWX4 (G02)M40d	1,030 km 640 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 2017440i	326 hp 243 kW	5.4 s	Unrestricted 260 km/h162 mph Restricted 250 km/h155 mph
BMWX4 (G02)M40d	326 hp 243 kW	4.9 s	250 km/h 155 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 2017440i

Power	326 hp 243 kW
0-100 km/h	5.4 s
Top speed Unrestricted 260 km/h162 mph Restricted 250 km/h155 mph

Doors/seats	2 doors 4 seats
Trunk	370 L 13.1 cu ft
Length	4,640 mm 182.7 in
Height	1,399 mm 55.1 in

BMWX4 (G02)M40d

Power	326 hp 243 kW
0-100 km/h	4.9 s
Top speed 250 km/h 155 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 2017440i

Power	326 hp 243 kW
0-100 km/h	5.4 s
Top speed Unrestricted 260 km/h162 mph Restricted 250 km/h155 mph

7.6 L/100 km

30.9 mpg US

37.2 mpg UK

BMWX4 (G02)M40d

Power	326 hp 243 kW
0-100 km/h	4.9 s
Top speed 250 km/h 155 mph

6.6 L/100 km

35.6 mpg US

42.8 mpg UK

BMW X4 (G02) M40d 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 2017440i	7.6 L/100 km 30.9 mpg US 37.2 mpg UK	5.4 s
BMWX4 (G02)M40d	6.6 L/100 km 35.6 mpg US 42.8 mpg UK	4.9 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 2017440i	176 hp/t 131 kW/t 5.7 kg/hp	7.6 L/100 km 30.9 mpg US 37.2 mpg UK
BMWX4 (G02)M40d	172 hp/t 128 kW/t 5.8 kg/hp	6.6 L/100 km 35.6 mpg US 42.8 mpg UK

Detailed score breakdown

Vehicle

BMW4 Series Convertible (F33)Facelift 2017440i

BMWX4 (G02)M40d

Power

326 hp

243 kW

326 hp

243 kW

Torque

450 Nm

332 lb-ft

680 Nm

502 lb-ft

Acceleration

5.4 s

4.9 s

Top speed

Unrestricted

260 km/h162 mph

Restricted

250 km/h155 mph

250 km/h

155 mph

Lightness

1,850 kg

4,079 lb

1,895 kg

4,178 lb

Fuel consumption

7.6 L/100 km

30.9 mpg US

37.2 mpg UK

6.6 L/100 km

35.6 mpg US

42.8 mpg UK

Practicality

Doors/seats	2 doors 4 seats
Trunk	370 L 13.1 cu ft
Length	4,640 mm 182.7 in
Height	1,399 mm 55.1 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

789 km

491 mi

1,030 km

640 mi

CO2 score

177 g/km

173 g/km

Trunk score

370 L

13.1 cu ft

525 L

18.5 cu ft

Power-to-weight score

176 hp/t

131 kW/t

5.7 kg/hp

172 hp/t

128 kW/t

5.8 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 440i	BMW X4 (G02) M40d
Consumption	7.6 L/100 km30.9 mpg US37.2 mpg UK	6.6 L/100 km35.6 mpg US42.8 mpg UK
Cost / 100 km	13.30 LC100 km	11.55 LC100 km
Cost / 100 mi	21.40 LC100 mi	18.59 LC100 mi
Annual fuel used	1,140 L301 US gal251 UK gal	990 L262 US gal218 UK gal
Annual fuel cost	1,995 LC/year	1,733 LC/year