Car comparison

BMW 6 Series Gran Turismo (G32) 640dvsBMW 4 Series Convertible (F33) · Facelift 2017 440i

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

New comparison

BMW 6 Series Gran Turismo (G32)

640d

320 hp2993 ccDieselAWDAutomaticTurbocharged2017-2020

BMW 4 Series Convertible (F33) · Facelift 2017

440i

326 hp2998 ccGasolineAWDAutomaticTurbochargedCabriolet / convertible2017-2020

Comparison overview

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

BMW 6 Series Gran Turismo (G32) 640d

Quickest 0-100 km/h
5.3 s
Fastest top speed
260 km/h
162 mph Unrestricted
250 km/h
155 mph Restricted
Highest torque
680 Nm
502 lb-ft
Lowest combined fuel consumption
6.2 L/100 km
37.9 mpg US
45.6 mpg UK
Lowest city consumption
7.2 L/100 km
32.7 mpg US
39.2 mpg UK
Lowest highway consumption
5.6 L/100 km
42.0 mpg US
50.4 mpg UK
Lowest CO2 emissions
163 g/km
Best estimated range
1,065 km
661 mi
Largest trunk
610 L
Best overall score
74/100
Best performance score
72/100
Best economy score
90/100
Best practicality score
79/100

BMW 4 Series Convertible (F33) Facelift 2017 440i

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

Specification comparison

Specification comparison
Model	BMW6 Series Gran Turismo (G32)640d	BMW4 Series Convertible (F33)Facelift 2017440i
Power	320hp239kW	326hp243kW
Torque	680Nm502lb-ft	450Nm332lb-ft
Curb weight	1,935kg4,266lb	1,850kg4,079lb
Gross weight	2,615kg5,765lb	2,300kg5,071lb
Top speed	Unrestricted 260 km/h162 mph Restricted 250 km/h155 mph Calculated	Unrestricted 260 km/h162 mph Restricted 250 km/h155 mph Calculated
To 99% top speed	73.3s99% target: 257 km/h / 160 mph Calculated	77.9s99% target: 257 km/h / 160 mph Calculated
0-100 km/h	5.3s	5.4s
0-200 km/h	19.3s Calculated	20.1s Calculated
0-60 mph	5.0s Calculated	5.1s Calculated
Fuel consumption	6.2L/100 km37.9mpg US45.6mpg UK	7.6L/100 km30.9mpg US37.2mpg UK
Fuel consumption city	7.2L/100 km32.7mpg US39.2mpg UK	10.3L/100 km22.8mpg US27.4mpg UK
Fuel consumption highway	5.6L/100 km42mpg US50.4mpg UK	6.1L/100 km38.6mpg US46.3mpg UK
Quarter mile	13.4s Calculated	13.6s Calculated
Power-to-weight	165hp/t123kW/t75hp/1000 lb Calculated	176hp/t131kW/t80hp/1000 lb Calculated
Torque-to-weight	351Nm/t235lb-ft/ton Calculated	243Nm/t163lb-ft/ton Calculated
Estimated range	1,065km661mi Calculated	789km491mi Calculated
Displacement	2,993cc183cu in	2,998cc183cu in
Length	5,091mm200in	4,640mm183in
Width	1,902mm75in	1,825mm72in
Height	1,540mm61in	1,399mm55in
Wheelbase	3,070mm121in	2,810mm111in
Front track	-	1,543mm61in
Rear track	-	1,593mm63in
Ground clearance	-	145mm6in
Trunk volume	610L	370L
Max trunk volume	1,800L	-
Doors	5	2
Seats	5	4
Fuel tank	66L	60L
CO2 emissions	163g/km	177g/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 6 Series Gran Turismo (G32) 640dBMW 4 Series Convertible (F33) Facelift 2017 440iPowerTorque

Dyno simulation data table
Vehicle	Peak power RPM	Peak torque RPM	Max engine speed
BMW6 Series Gran Turismo (G32)640d	4,400 rpm	1,750-2,250 rpm	4,650 rpm
BMW4 Series Convertible (F33)Facelift 2017440i	5,500 rpm	1,380-5,000 rpm	5,750 rpm

Acceleration curve

Estimated speed over time for selected vehicles.

Acceleration and drag-race table
Metric	BMW6 Series Gran Turismo (G32)640d	BMW4 Series Convertible (F33)Facelift 2017440i
	Acceleration checkpoints
0-60 mph 0-97 km/h	5.0 s	5.1 s
0-100 km/h 0-62 mph	5.3 s	5.4 s
0-200 km/h 0-124 mph	19.3 s	20.1 s
Top speed	Unrestricted 260 km/h162 mph Restricted 250 km/h155 mph Likely limited	Unrestricted 260 km/h162 mph Restricted 250 km/h155 mph Likely limited
	Drag race simulation
60 ft 18 m	2.2 s	2.2 s
330 ft 101 m	5.8 s	5.9 s
1/8 mile 201 m	8.8 s	8.8 s
1000 ft 305 m	11.3 s	11.4 s
1/4 mile 402 m	13.4 s	13.6 s
Trap speed 1/4 mile 402 m	171 km/h 107 mph	169 km/h 105 mph

Power comparison

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

Chart data table
Vehicle	Value
BMW6 Series Gran Turismo (G32)640d	320 hp 239 kW
BMW4 Series Convertible (F33)Facelift 2017440i	326 hp 243 kW

BMW 4 Series Convertible (F33) Facelift 2017 440i has 6 hp more than BMW 6 Series Gran Turismo (G32) 640d.

The biggest power difference is between BMW 6 Series Gran Turismo (G32) 640d and BMW 4 Series Convertible (F33) Facelift 2017 440i: 6 hp (4 kW).

Torque comparison

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

Chart data table
Vehicle	Value
BMW6 Series Gran Turismo (G32)640d	680 Nm 502 lb-ft
BMW4 Series Convertible (F33)Facelift 2017440i	450 Nm 332 lb-ft

Curb weight comparison

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

Chart data table
Vehicle	Value
BMW6 Series Gran Turismo (G32)640d	1,935 kg 4,266 lb
BMW4 Series Convertible (F33)Facelift 2017440i	1,850 kg 4,079 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
BMW6 Series Gran Turismo (G32)640d	Unrestricted 260 km/h162 mph Restricted 250 km/h155 mph
BMW4 Series Convertible (F33)Facelift 2017440i	Unrestricted 260 km/h162 mph Restricted 250 km/h155 mph

0-100 km/h comparison

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

Chart data table
Vehicle	Value
BMW6 Series Gran Turismo (G32)640d	5.3 s
BMW4 Series Convertible (F33)Facelift 2017440i	5.4 s

Although BMW 4 Series Convertible (F33) Facelift 2017 440i has more power, BMW 6 Series Gran Turismo (G32) 640d is quicker from 0-100 km/h.

The biggest 0-100 km/h difference is between BMW 6 Series Gran Turismo (G32) 640d and BMW 4 Series Convertible (F33) Facelift 2017 440i: 0.1 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
BMW6 Series Gran Turismo (G32)640d	6.2 L/100 km 37.9 mpg US 45.6 mpg UK
BMW4 Series Convertible (F33)Facelift 2017440i	7.6 L/100 km 30.9 mpg US 37.2 mpg UK

The biggest fuel consumption difference is between BMW 6 Series Gran Turismo (G32) 640d and BMW 4 Series Convertible (F33) Facelift 2017 440i: 1.4 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
BMW6 Series Gran Turismo (G32)640d	165 hp/t 123 kW/t 6.0 kg/hp
BMW4 Series Convertible (F33)Facelift 2017440i	176 hp/t 131 kW/t 5.7 kg/hp

Estimated range comparison

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

Chart data table
Vehicle	Value
BMW6 Series Gran Turismo (G32)640d	1,065 km 661 mi
BMW4 Series Convertible (F33)Facelift 2017440i	789 km 491 mi

Performance spider chart

Radar chart comparing normalized performance and fuel-consumption scores.

Chart data table
Vehicle	Power	Acceleration	Top speed
BMW6 Series Gran Turismo (G32)640d	320 hp 239 kW	5.3 s	Unrestricted 260 km/h162 mph Restricted 250 km/h155 mph
BMW4 Series Convertible (F33)Facelift 2017440i	326 hp 243 kW	5.4 s	Unrestricted 260 km/h162 mph Restricted 250 km/h155 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

BMW6 Series Gran Turismo (G32)640d

Power	320 hp 239 kW
0-100 km/h	5.3 s
Top speed Unrestricted 260 km/h162 mph Restricted 250 km/h155 mph

Doors/seats	5 doors 5 seats
Trunk	610 L 21.5 cu ft
Length	5,091 mm 200.4 in
Height	1,540 mm 60.6 in

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

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

BMW6 Series Gran Turismo (G32)640d

Power	320 hp 239 kW
0-100 km/h	5.3 s
Top speed Unrestricted 260 km/h162 mph Restricted 250 km/h155 mph

6.2 L/100 km

37.9 mpg US

45.6 mpg UK

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

BMW 6 Series Gran Turismo (G32) 640d 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
BMW6 Series Gran Turismo (G32)640d	6.2 L/100 km 37.9 mpg US 45.6 mpg UK	5.3 s
BMW4 Series Convertible (F33)Facelift 2017440i	7.6 L/100 km 30.9 mpg US 37.2 mpg UK	5.4 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
BMW6 Series Gran Turismo (G32)640d	165 hp/t 123 kW/t 6.0 kg/hp	6.2 L/100 km 37.9 mpg US 45.6 mpg UK
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

Detailed score breakdown

Vehicle

BMW6 Series Gran Turismo (G32)640d

BMW4 Series Convertible (F33)Facelift 2017440i

Power

320 hp

239 kW

326 hp

243 kW

Torque

680 Nm

502 lb-ft

450 Nm

332 lb-ft

Acceleration

5.3 s

5.4 s

Top speed

Unrestricted

260 km/h162 mph

Restricted

250 km/h155 mph

Unrestricted

260 km/h162 mph

Restricted

250 km/h155 mph

Lightness

1,935 kg

4,266 lb

1,850 kg

4,079 lb

Fuel consumption

6.2 L/100 km

37.9 mpg US

45.6 mpg UK

7.6 L/100 km

30.9 mpg US

37.2 mpg UK

Practicality

Doors/seats	5 doors 5 seats
Trunk	610 L 21.5 cu ft
Length	5,091 mm 200.4 in
Height	1,540 mm 60.6 in

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

Range score

1,065 km

661 mi

789 km

491 mi

CO2 score

163 g/km

177 g/km

Trunk score

610 L

21.5 cu ft

370 L

13.1 cu ft

Power-to-weight score

165 hp/t

123 kW/t

6.0 kg/hp

176 hp/t

131 kW/t

5.7 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 6 Series Gran Turismo (G32) 640d	BMW 4 Series Convertible (F33) Facelift 2017 440i
Consumption	6.2 L/100 km37.9 mpg US45.6 mpg UK	7.6 L/100 km30.9 mpg US37.2 mpg UK
Cost / 100 km	10.85 LC100 km	13.30 LC100 km
Cost / 100 mi	17.46 LC100 mi	21.40 LC100 mi
Annual fuel used	930 L246 US gal205 UK gal	1,140 L301 US gal251 UK gal
Annual fuel cost	1,628 LC/year	1,995 LC/year