Car comparison

BMW 6 Series Convertible (F12) 640ivsInfiniti G37 Convertible (V36) 3.7 V6

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

New comparison

BMW 6 Series Convertible (F12)

640i

320 hp2979 ccGasolineAWDAutomaticTurbochargedCabriolet / convertible2013-2015

Infiniti G37 Convertible (V36)

3.7 V6

320 hp3696 ccGasolineRWDAutomaticNaturally aspiratedCabriolet / convertible2009-2015

Comparison overview

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

BMW 6 Series Convertible (F12) 640i

Quickest 0-100 km/h
5.4 s
Fastest top speed
260 km/h
162 mph Unrestricted
250 km/h
155 mph Restricted
Most powerful
320 hp
239 kW
Highest torque
450 Nm
332 lb-ft
Lowest combined fuel consumption
8.4 L/100 km
28.0 mpg US
33.6 mpg UK
Lowest city consumption
11.4 L/100 km
20.6 mpg US
24.8 mpg UK
Lowest highway consumption
6.6 L/100 km
35.6 mpg US
42.8 mpg UK
Best estimated range
833 km
518 mi
Best overall score
59/100
Best performance score
66/100
Best economy score
84/100

Infiniti G37 Convertible (V36) 3.7 V6

Lightest
1,898 kg
4,184 lb
Best power-to-weight
169 hp/t
126 kW/t
5.9 kg/hp
Largest trunk
366 L
Best practicality score
47/100

Specification comparison

Specification comparison
Model	BMW6 Series Convertible (F12)640i	InfinitiG37 Convertible (V36)3.7 V6
Power	320hp239kW	320hp239kW
Torque	450Nm332lb-ft	360Nm266lb-ft
Curb weight	1,910kg4,211lb	1,898kg4,184lb
Gross weight	2,400kg5,291lb	-
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	80.0s99% target: 257 km/h / 160 mph Calculated	95.7s99% target: 257 km/h / 160 mph Calculated
0-100 km/h	5.4s	6.4s
0-200 km/h	20.3s Calculated	24.2s Calculated
0-60 mph	5.1s Calculated	6.1s Calculated
Fuel consumption	8.4L/100 km28mpg US33.6mpg UK	11.4L/100 km20.6mpg US24.8mpg UK
Fuel consumption city	11.4L/100 km20.6mpg US24.8mpg UK	16.4L/100 km14.3mpg US17.2mpg UK
Fuel consumption highway	6.6L/100 km35.6mpg US42.8mpg UK	8.3L/100 km28.3mpg US34.0mpg UK
Quarter mile	13.6s Calculated	14.5s Calculated
Power-to-weight	168hp/t125kW/t76hp/1000 lb Calculated	169hp/t126kW/t76hp/1000 lb Calculated
Torque-to-weight	236Nm/t158lb-ft/ton Calculated	190Nm/t127lb-ft/ton Calculated
Estimated range	833km518mi Calculated	702km436mi Calculated
Displacement	2,979cc182cu in	3,696cc226cu in
Length	4,894mm193in	4,660mm183in
Width	1,894mm75in	1,852mm73in
Height	1,365mm54in	1,400mm55in
Wheelbase	2,855mm112in	2,850mm112in
Front track	1,600mm63in	1,545mm61in
Rear track	1,665mm66in	1,595mm63in
Ground clearance	123mm5in	-
Trunk volume	300L	366L
Max trunk volume	350L	-
Doors	2	2
Seats	4	4
Fuel tank	70L	80L
CO2 emissions	195g/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 Convertible (F12) 640iInfiniti G37 Convertible (V36) 3.7 V6PowerTorque

Dyno simulation data table
Vehicle	Peak power RPM	Peak torque RPM	Max engine speed
BMW6 Series Convertible (F12)640i	5,800-6,000 rpm	1,300-4,500 rpm	6,250 rpm
InfinitiG37 Convertible (V36)3.7 V6	7,000 rpm	5,200 rpm	7,250 rpm

Acceleration curve

Estimated speed over time for selected vehicles.

Acceleration and drag-race table
Metric	BMW6 Series Convertible (F12)640i	InfinitiG37 Convertible (V36)3.7 V6
	Acceleration checkpoints
0-60 mph 0-97 km/h	5.1 s	6.1 s
0-100 km/h 0-62 mph	5.4 s	6.4 s
0-200 km/h 0-124 mph	20.3 s	24.2 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	2.4 s
330 ft 101 m	5.8 s	6.3 s
1/8 mile 201 m	8.8 s	9.4 s
1000 ft 305 m	11.4 s	12.2 s
1/4 mile 402 m	13.6 s	14.5 s
Trap speed 1/4 mile 402 m	169 km/h 105 mph	160 km/h 99 mph

Power comparison

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

Chart data table
Vehicle	Value
BMW6 Series Convertible (F12)640i	320 hp 239 kW
InfinitiG37 Convertible (V36)3.7 V6	320 hp 239 kW

Torque comparison

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

Chart data table
Vehicle	Value
BMW6 Series Convertible (F12)640i	450 Nm 332 lb-ft
InfinitiG37 Convertible (V36)3.7 V6	360 Nm 266 lb-ft

Curb weight comparison

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

Chart data table
Vehicle	Value
BMW6 Series Convertible (F12)640i	1,910 kg 4,211 lb
InfinitiG37 Convertible (V36)3.7 V6	1,898 kg 4,184 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 Convertible (F12)640i	Unrestricted 260 km/h162 mph Restricted 250 km/h155 mph
InfinitiG37 Convertible (V36)3.7 V6	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 Convertible (F12)640i	5.4 s
InfinitiG37 Convertible (V36)3.7 V6	6.4 s

The biggest 0-100 km/h difference is between BMW 6 Series Convertible (F12) 640i and Infiniti G37 Convertible (V36) 3.7 V6: 1.0 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
BMW6 Series Convertible (F12)640i	8.4 L/100 km 28.0 mpg US 33.6 mpg UK
InfinitiG37 Convertible (V36)3.7 V6	11.4 L/100 km 20.6 mpg US 24.8 mpg UK

The biggest fuel consumption difference is between BMW 6 Series Convertible (F12) 640i and Infiniti G37 Convertible (V36) 3.7 V6: 3.0 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
BMW6 Series Convertible (F12)640i	168 hp/t 125 kW/t 6.0 kg/hp
InfinitiG37 Convertible (V36)3.7 V6	169 hp/t 126 kW/t 5.9 kg/hp

Estimated range comparison

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

Chart data table
Vehicle	Value
BMW6 Series Convertible (F12)640i	833 km 518 mi
InfinitiG37 Convertible (V36)3.7 V6	702 km 436 mi

Performance spider chart

Radar chart comparing normalized performance and fuel-consumption scores.

Chart data table
Vehicle	Power	Acceleration	Top speed
BMW6 Series Convertible (F12)640i	320 hp 239 kW	5.4 s	Unrestricted 260 km/h162 mph Restricted 250 km/h155 mph
InfinitiG37 Convertible (V36)3.7 V6	320 hp 239 kW	6.4 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 Convertible (F12)640i

Power	320 hp 239 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	300 L 10.6 cu ft
Length	4,894 mm 192.7 in
Height	1,365 mm 53.7 in

InfinitiG37 Convertible (V36)3.7 V6

Power	320 hp 239 kW
0-100 km/h	6.4 s
Top speed Unrestricted 260 km/h162 mph Restricted 250 km/h155 mph

Doors/seats	2 doors 4 seats
Trunk	366 L 12.9 cu ft
Length	4,660 mm 183.5 in
Height	1,400 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 Convertible (F12)640i

Power	320 hp 239 kW
0-100 km/h	5.4 s
Top speed Unrestricted 260 km/h162 mph Restricted 250 km/h155 mph

8.4 L/100 km

28.0 mpg US

33.6 mpg UK

InfinitiG37 Convertible (V36)3.7 V6

Power	320 hp 239 kW
0-100 km/h	6.4 s
Top speed Unrestricted 260 km/h162 mph Restricted 250 km/h155 mph

11.4 L/100 km

20.6 mpg US

24.8 mpg UK

BMW 6 Series Convertible (F12) 640i 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 Convertible (F12)640i	8.4 L/100 km 28.0 mpg US 33.6 mpg UK	5.4 s
InfinitiG37 Convertible (V36)3.7 V6	11.4 L/100 km 20.6 mpg US 24.8 mpg UK	6.4 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 Convertible (F12)640i	168 hp/t 125 kW/t 6.0 kg/hp	8.4 L/100 km 28.0 mpg US 33.6 mpg UK
InfinitiG37 Convertible (V36)3.7 V6	169 hp/t 126 kW/t 5.9 kg/hp	11.4 L/100 km 20.6 mpg US 24.8 mpg UK

Detailed score breakdown

Vehicle

BMW6 Series Convertible (F12)640i

InfinitiG37 Convertible (V36)3.7 V6

Power

320 hp

239 kW

320 hp

239 kW

Torque

450 Nm

332 lb-ft

360 Nm

266 lb-ft

Acceleration

5.4 s

6.4 s

Top speed

Unrestricted

260 km/h162 mph

Restricted

250 km/h155 mph

Unrestricted

260 km/h162 mph

Restricted

250 km/h155 mph

Lightness

1,910 kg

4,211 lb

1,898 kg

4,184 lb

Fuel consumption

8.4 L/100 km

28.0 mpg US

33.6 mpg UK

11.4 L/100 km

20.6 mpg US

24.8 mpg UK

Practicality

Doors/seats	2 doors 4 seats
Trunk	300 L 10.6 cu ft
Length	4,894 mm 192.7 in
Height	1,365 mm 53.7 in

Doors/seats	2 doors 4 seats
Trunk	366 L 12.9 cu ft
Length	4,660 mm 183.5 in
Height	1,400 mm 55.1 in

Range score

833 km

518 mi

702 km

436 mi

CO2 score

195 g/km

Trunk score

300 L

10.6 cu ft

366 L

12.9 cu ft

Power-to-weight score

168 hp/t

125 kW/t

6.0 kg/hp

169 hp/t

126 kW/t

5.9 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 6 Series Convertible (F12) 640i	Infiniti G37 Convertible (V36) 3.7 V6
Consumption	8.4 L/100 km28 mpg US33.6 mpg UK	11.4 L/100 km20.6 mpg US24.8 mpg UK
Cost / 100 km	14.70 LC100 km	19.95 LC100 km
Cost / 100 mi	23.66 LC100 mi	32.11 LC100 mi
Annual fuel used	1,260 L333 US gal277 UK gal	1,710 L452 US gal376 UK gal
Annual fuel cost	2,205 LC/year	2,993 LC/year