Car comparison

BMW 6 Series Convertible (F12) 650ivsBMW M3 Convertible (E93) 4.0 V8

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

New comparison

BMW 6 Series Convertible (F12)

650i

450 hp4395 ccGasolineAWDAutomaticTurbochargedCabriolet / convertible2012-2015
VS

BMW M3 Convertible (E93)

4.0 V8

420 hp3999 ccGasolineRWDDual-clutchNaturally aspiratedCabriolet / convertible2008-2010

Comparison overview

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

Best choices

BMW 6 Series Convertible (F12) 650i

  • Quickest 0-100 km/h
    4.5 s
  • Fastest top speed
    260 km/h
    162 mph Unrestricted
    250 km/h
    155 mph Restricted
  • Most powerful
    450 hp
    336 kW
  • Highest torque
    650 Nm
    479 lb-ft
  • Lowest combined fuel consumption
    9.5 L/100 km
    24.8 mpg US
    29.7 mpg UK
  • Lowest city consumption
    13.3 L/100 km
    17.7 mpg US
    21.2 mpg UK
  • Lowest highway consumption
    7.3 L/100 km
    32.2 mpg US
    38.7 mpg UK
  • Best estimated range
    737 km
    458 mi
  • Largest trunk
    300 L
  • Best overall score
    68/100
  • Best performance score
    79/100
  • Best economy score
    81/100
  • Best practicality score
    45/100

Specification comparison

Specification comparison
ModelBMW6 Series Convertible (F12)650iBMWM3 Convertible (E93)4.0 V8
Power
450hp336kW
420hp313kW
Torque
650Nm479lb-ft
400Nm295lb-ft
Curb weight
1,980kg4,365lb
1,830kg4,034lb
Gross weight
2,480kg5,467lb
2,280kg5,027lb
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
61.4s99% target: 257 km/h / 160 mph
Calculated
61.3s99% target: 257 km/h / 160 mph
Calculated
0-100 km/h
4.5s
5.1s
0-200 km/h
16.3s
Calculated
17.3s
0-60 mph
4.3s
Calculated
4.9s
Calculated
Fuel consumption
9.5L/100 km24.8mpg US29.7mpg UK
12.3L/100 km19.1mpg US23.0mpg UK
Fuel consumption city
13.3L/100 km17.7mpg US21.2mpg UK
17.3L/100 km13.6mpg US16.3mpg UK
Fuel consumption highway
7.3L/100 km32.2mpg US38.7mpg UK
9.4L/100 km25mpg US30.1mpg UK
Quarter mile
12.6s
Calculated
13.2s
Calculated
Power-to-weight
227hp/t169kW/t103hp/1000 lb
Calculated
230hp/t171kW/t104hp/1000 lb
Calculated
Torque-to-weight
328Nm/t220lb-ft/ton
Calculated
219Nm/t146lb-ft/ton
Calculated
Estimated range
737km458mi
Calculated
512km318mi
Calculated
Displacement
4,395cc268cu in
3,999cc244cu in
Length
4,894mm193in
4,615mm182in
Width
1,894mm75in
1,804mm71in
Height
1,365mm54in
1,392mm55in
Wheelbase
2,855mm112in
2,761mm109in
Front track
1,600mm63in
1,540mm61in
Rear track
1,665mm66in
1,539mm61in
Ground clearance
123mm5in
-
Trunk volume
300L
210L
Max trunk volume
350L
350L
Doors
2
2
Seats
4
4
Fuel tank
70L
63L
CO2 emissions
221g/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) 650iBMW M3 Convertible (E93) 4.0 V8PowerTorque
  • BMW 6 Series Convertible (F12) 650i: Power / Torque
  • BMW M3 Convertible (E93) 4.0 V8: Power / Torque
Dyno simulation data table
VehiclePeak power RPMPeak torque RPMMax engine speed
BMW6 Series Convertible (F12)650i5,500 rpm2,000-4,500 rpm5,750 rpm
BMWM3 Convertible (E93)4.0 V88,300 rpm3,900 rpm8,550 rpm

Acceleration curve

Estimated speed over time for selected vehicles.

Acceleration and drag-race table
MetricBMW6 Series Convertible (F12)650iBMWM3 Convertible (E93)4.0 V8
Acceleration checkpoints
0-60 mph
0-97 km/h
4.3 s
4.9 s
0-100 km/h
0-62 mph
4.5 s
5.1 s
0-200 km/h
0-124 mph
16.3 s
17.3 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
Limited
Drag race simulation
60 ft
18 m
2.1 s
2.2 s
330 ft
101 m
5.5 s
5.8 s
1/8 mile
201 m
8.2 s
8.7 s
1000 ft
305 m
10.6 s
11.1 s
1/4 mile
402 m
12.6 s
13.2 s
Trap speed
1/4 mile
402 m
180 km/h
112 mph
177 km/h
110 mph

Power comparison

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

Chart data table
VehicleValue
BMW6 Series Convertible (F12)650i
450 hp
336 kW
BMWM3 Convertible (E93)4.0 V8
420 hp
313 kW

BMW 6 Series Convertible (F12) 650i has 30 hp more than BMW M3 Convertible (E93) 4.0 V8.

The biggest power difference is between BMW M3 Convertible (E93) 4.0 V8 and BMW 6 Series Convertible (F12) 650i: 30 hp (22 kW).

Torque comparison

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

Chart data table
VehicleValue
BMW6 Series Convertible (F12)650i
650 Nm
479 lb-ft
BMWM3 Convertible (E93)4.0 V8
400 Nm
295 lb-ft

Curb weight comparison

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

Chart data table
VehicleValue
BMW6 Series Convertible (F12)650i
1,980 kg
4,365 lb
BMWM3 Convertible (E93)4.0 V8
1,830 kg
4,034 lb

Top speed without limiter comparison

Bar comparison chart for Top speed without limiter. Higher is better · km/h / mph

Chart data table
VehicleValue
BMW6 Series Convertible (F12)650i
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
BMWM3 Convertible (E93)4.0 V8
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
VehicleValue
BMW6 Series Convertible (F12)650i4.5 s
BMWM3 Convertible (E93)4.0 V85.1 s

The biggest 0-100 km/h difference is between BMW 6 Series Convertible (F12) 650i and BMW M3 Convertible (E93) 4.0 V8: 0.6 s.

Fuel consumption comparison

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

Chart data table
VehicleValue
BMW6 Series Convertible (F12)650i
9.5 L/100 km
24.8 mpg US
29.7 mpg UK
BMWM3 Convertible (E93)4.0 V8
12.3 L/100 km
19.1 mpg US
23.0 mpg UK

The biggest fuel consumption difference is between BMW 6 Series Convertible (F12) 650i and BMW M3 Convertible (E93) 4.0 V8: 2.8 L/100 km.

Power-to-weight comparison

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

Chart data table
VehicleValue
BMW6 Series Convertible (F12)650i
227 hp/t
169 kW/t
4.4 kg/hp
BMWM3 Convertible (E93)4.0 V8
230 hp/t
171 kW/t
4.4 kg/hp

Estimated range comparison

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

Chart data table
VehicleValue
BMW6 Series Convertible (F12)650i
737 km
458 mi
BMWM3 Convertible (E93)4.0 V8
512 km
318 mi

Performance spider chart

Radar chart comparing normalized performance and fuel-consumption scores.

Chart data table
VehiclePowerAccelerationTop speed
BMW6 Series Convertible (F12)650i
450 hp
336 kW
4.5 s
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
BMWM3 Convertible (E93)4.0 V8
420 hp
313 kW
5.1 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.

Chart data table
VehiclePerformance scorePracticality score
BMW6 Series Convertible (F12)650i
Power
450 hp
336 kW
0-100 km/h4.5 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
BMWM3 Convertible (E93)4.0 V8
Power
420 hp
313 kW
0-100 km/h5.1 s
Top speed
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
Doors/seats
2 doors
4 seats
Trunk
210 L
7.4 cu ft
Length
4,615 mm
181.7 in
Height
1,392 mm
54.8 in

Performance vs fuel economy

Cars closer to the top-right corner combine stronger performance with better fuel economy scores.

Performance vs fuel economy data table
VehiclePerformance scoreFuel economy score
BMW6 Series Convertible (F12)650i
Power
450 hp
336 kW
0-100 km/h4.5 s
Top speed
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
9.5 L/100 km
24.8 mpg US
29.7 mpg UK
BMWM3 Convertible (E93)4.0 V8
Power
420 hp
313 kW
0-100 km/h5.1 s
Top speed
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
12.3 L/100 km
19.1 mpg US
23.0 mpg UK

BMW 6 Series Convertible (F12) 650i 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
VehicleFuel consumption, L/100 km0-100 km/h, s
BMW6 Series Convertible (F12)650i
9.5 L/100 km
24.8 mpg US
29.7 mpg UK
4.5 s
BMWM3 Convertible (E93)4.0 V8
12.3 L/100 km
19.1 mpg US
23.0 mpg UK
5.1 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
VehiclePower-to-weight, hp/tFuel consumption, L/100 km
BMW6 Series Convertible (F12)650i
227 hp/t
169 kW/t
4.4 kg/hp
9.5 L/100 km
24.8 mpg US
29.7 mpg UK
BMWM3 Convertible (E93)4.0 V8
230 hp/t
171 kW/t
4.4 kg/hp
12.3 L/100 km
19.1 mpg US
23.0 mpg UK

Detailed score breakdown

Detailed score breakdown
VehicleBMW6 Series Convertible (F12)650iBMWM3 Convertible (E93)4.0 V8
Power
450 hp
336 kW
420 hp
313 kW
Torque
650 Nm
479 lb-ft
400 Nm
295 lb-ft
Acceleration
4.5 s
5.1 s
Top speed
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
Lightness
1,980 kg
4,365 lb
1,830 kg
4,034 lb
Fuel consumption
9.5 L/100 km
24.8 mpg US
29.7 mpg UK
12.3 L/100 km
19.1 mpg US
23.0 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
210 L
7.4 cu ft
Length
4,615 mm
181.7 in
Height
1,392 mm
54.8 in
Range score
737 km
458 mi
512 km
318 mi
CO2 score
221 g/km
-
Trunk score
300 L
10.6 cu ft
210 L
7.4 cu ft
Power-to-weight score
227 hp/t
169 kW/t
4.4 kg/hp
230 hp/t
171 kW/t
4.4 kg/hp
Overall
Fixed score
Fixed score

Fuel cost and annual usage

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

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
VehicleBMW 6 Series Convertible (F12) 650iBMW M3 Convertible (E93) 4.0 V8
Consumption9.5 L/100 km24.8 mpg US29.7 mpg UK12.3 L/100 km19.1 mpg US23 mpg UK
Cost / 100 km16.63 LC100 km21.53 LC100 km
Cost / 100 mi26.76 LC100 mi34.64 LC100 mi
Annual fuel used1,425 L376 US gal313 UK gal1,845 L487 US gal406 UK gal
Annual fuel cost2,494 LC/year3,229 LC/year

Head-to-head comparisons

BMW 6 Series Convertible (F12) 650i

  • Has 30 hp more
  • Has 250 Nm more
  • Is 0.6 s quicker from 0-100 km/h
  • Uses 2.8 L/100 km less fuel
  • Has 225 km (140 mi) more estimated range
  • Has 90 L more trunk volume

Pros

  • Quickest 0-100 km/h in this comparison
  • Highest top speed
  • Most powerful
  • Highest torque
  • Lowest combined fuel consumption
  • Best estimated range
  • Largest trunk

Cons

  • Heaviest

BMW M3 Convertible (E93) 4.0 V8

  • Is 150 kg lighter
  • Has 2 hp/t better power-to-weight

Pros

  • Lightest
  • Best power-to-weight ratio

Cons

  • Slowest 0-100 km/h
  • Lowest power
  • Highest combined fuel consumption
  • Smallest trunk

Choose cars to compare

Brand
Model
Generation
Engine or modification
BMW 6 Series Convertible (F12) 650i
BMW M3 Convertible (E93) 4.0 V8
Compare selected cars
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