Car comparison

BMW M3 Convertible (E93) 4.0 V8vsBMW 6 Series Convertible (E64) 650i

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

New comparison

BMW M3 Convertible (E93)

4.0 V8

420 hp3999 ccGasolineRWDManualNaturally aspiratedCabriolet / convertible2008-2010
VS

BMW 6 Series Convertible (E64)

650i

367 hp4799 ccGasolineRWDManualNaturally aspiratedCabriolet / convertible2005-2007

Comparison overview

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

Best choices

BMW M3 Convertible (E93) 4.0 V8

  • Quickest 0-100 km/h
    5.3 s
  • Fastest top speed
    260 km/h
    162 mph Unrestricted
    250 km/h
    155 mph Restricted
  • Most powerful
    420 hp
    313 kW
  • Lightest
    1,810 kg
    3,990 lb
  • Best power-to-weight
    232 hp/t
    173 kW/t
    4.3 kg/hp
  • Lowest combined fuel consumption
    12.9 L/100 km
    18.2 mpg US
    21.9 mpg UK
  • Lowest city consumption
    18.7 L/100 km
    12.6 mpg US
    15.1 mpg UK
  • Best overall score
    62/100
  • Best performance score
    71/100
  • Best economy score
    72/100

BMW 6 Series Convertible (E64) 650i

  • Highest torque
    490 Nm
    361 lb-ft
  • Lowest highway consumption
    9.3 L/100 km
    25.3 mpg US
    30.4 mpg UK
  • Best estimated range
    543 km
    337 mi
  • Largest trunk
    300 L
  • Best practicality score
    45/100

Specification comparison

Specification comparison
ModelBMWM3 Convertible (E93)4.0 V8BMW6 Series Convertible (E64)650i
Power
420hp313kW
367hp274kW
Torque
400Nm295lb-ft
490Nm361lb-ft
Curb weight
1,810kg3,990lb
1,850kg4,079lb
Gross weight
2,280kg5,027lb
2,250kg4,960lb
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
65.3s99% target: 257 km/h / 160 mph
Calculated
78.9s99% target: 257 km/h / 160 mph
Calculated
0-100 km/h
5.3s
5.7s
0-200 km/h
18.2s
20.7s
Calculated
0-60 mph
5.0s
Calculated
5.4s
Calculated
Fuel consumption
12.9L/100 km18.2mpg US21.9mpg UK
12.9L/100 km18.2mpg US21.9mpg UK
Fuel consumption city
18.7L/100 km12.6mpg US15.1mpg UK
19.1L/100 km12.3mpg US14.8mpg UK
Fuel consumption highway
9.6L/100 km24.5mpg US29.4mpg UK
9.3L/100 km25.3mpg US30.4mpg UK
Quarter mile
13.4s
Calculated
13.8s
Calculated
Power-to-weight
232hp/t173kW/t105hp/1000 lb
Calculated
198hp/t148kW/t90hp/1000 lb
Calculated
Torque-to-weight
221Nm/t148lb-ft/ton
Calculated
265Nm/t177lb-ft/ton
Calculated
Estimated range
488km303mi
Calculated
543km337mi
Calculated
Displacement
3,999cc244cu in
4,799cc293cu in
Length
4,615mm182in
4,820mm190in
Width
1,804mm71in
1,855mm73in
Height
1,392mm55in
1,373mm54in
Wheelbase
2,761mm109in
2,780mm109in
Front track
1,540mm61in
1,558mm61in
Rear track
1,539mm61in
1,596mm63in
Trunk volume
210L
300L
Max trunk volume
350L
350L
Doors
2
2
Seats
4
4
Fuel tank
63L
70L

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 M3 Convertible (E93) 4.0 V8BMW 6 Series Convertible (E64) 650iPowerTorque
  • BMW M3 Convertible (E93) 4.0 V8: Power / Torque
  • BMW 6 Series Convertible (E64) 650i: Power / Torque
Dyno simulation data table
VehiclePeak power RPMPeak torque RPMMax engine speed
BMWM3 Convertible (E93)4.0 V88,300 rpm3,900 rpm8,550 rpm
BMW6 Series Convertible (E64)650i6,300 rpm3,400 rpm6,550 rpm

Acceleration curve

Estimated speed over time for selected vehicles.

Acceleration and drag-race table
MetricBMWM3 Convertible (E93)4.0 V8BMW6 Series Convertible (E64)650i
Acceleration checkpoints
0-60 mph
0-97 km/h
5.0 s
5.4 s
0-100 km/h
0-62 mph
5.3 s
5.7 s
0-200 km/h
0-124 mph
18.2 s
20.7 s
Top speed
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
Limited
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
Likely limited
Drag race simulation
60 ft
18 m
2.3 s
2.3 s
330 ft
101 m
5.9 s
6.0 s
1/8 mile
201 m
8.8 s
9.0 s
1000 ft
305 m
11.3 s
11.6 s
1/4 mile
402 m
13.4 s
13.8 s
Trap speed
1/4 mile
402 m
175 km/h
109 mph
168 km/h
104 mph

Power comparison

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

Chart data table
VehicleValue
BMWM3 Convertible (E93)4.0 V8
420 hp
313 kW
BMW6 Series Convertible (E64)650i
367 hp
274 kW

BMW M3 Convertible (E93) 4.0 V8 has 53 hp more than BMW 6 Series Convertible (E64) 650i.

The biggest power difference is between BMW 6 Series Convertible (E64) 650i and BMW M3 Convertible (E93) 4.0 V8: 53 hp (40 kW).

Torque comparison

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

Chart data table
VehicleValue
BMWM3 Convertible (E93)4.0 V8
400 Nm
295 lb-ft
BMW6 Series Convertible (E64)650i
490 Nm
361 lb-ft

Curb weight comparison

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

Chart data table
VehicleValue
BMWM3 Convertible (E93)4.0 V8
1,810 kg
3,990 lb
BMW6 Series Convertible (E64)650i
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
VehicleValue
BMWM3 Convertible (E93)4.0 V8
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
BMW6 Series Convertible (E64)650i
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
BMWM3 Convertible (E93)4.0 V85.3 s
BMW6 Series Convertible (E64)650i5.7 s

The biggest 0-100 km/h difference is between BMW M3 Convertible (E93) 4.0 V8 and BMW 6 Series Convertible (E64) 650i: 0.4 s.

Fuel consumption comparison

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

Chart data table
VehicleValue
BMWM3 Convertible (E93)4.0 V8
12.9 L/100 km
18.2 mpg US
21.9 mpg UK
BMW6 Series Convertible (E64)650i
12.9 L/100 km
18.2 mpg US
21.9 mpg UK

Power-to-weight comparison

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

Chart data table
VehicleValue
BMWM3 Convertible (E93)4.0 V8
232 hp/t
173 kW/t
4.3 kg/hp
BMW6 Series Convertible (E64)650i
198 hp/t
148 kW/t
5.0 kg/hp

Estimated range comparison

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

Chart data table
VehicleValue
BMWM3 Convertible (E93)4.0 V8
488 km
303 mi
BMW6 Series Convertible (E64)650i
543 km
337 mi

Performance spider chart

Radar chart comparing normalized performance and fuel-consumption scores.

Chart data table
VehiclePowerAccelerationTop speed
BMWM3 Convertible (E93)4.0 V8
420 hp
313 kW
5.3 s
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
BMW6 Series Convertible (E64)650i
367 hp
274 kW
5.7 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
BMWM3 Convertible (E93)4.0 V8
Power
420 hp
313 kW
0-100 km/h5.3 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
BMW6 Series Convertible (E64)650i
Power
367 hp
274 kW
0-100 km/h5.7 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
4,820 mm
189.8 in
Height
1,373 mm
54.1 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
BMWM3 Convertible (E93)4.0 V8
Power
420 hp
313 kW
0-100 km/h5.3 s
Top speed
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
12.9 L/100 km
18.2 mpg US
21.9 mpg UK
BMW6 Series Convertible (E64)650i
Power
367 hp
274 kW
0-100 km/h5.7 s
Top speed
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
12.9 L/100 km
18.2 mpg US
21.9 mpg UK

BMW M3 Convertible (E93) 4.0 V8 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
BMWM3 Convertible (E93)4.0 V8
12.9 L/100 km
18.2 mpg US
21.9 mpg UK
5.3 s
BMW6 Series Convertible (E64)650i
12.9 L/100 km
18.2 mpg US
21.9 mpg UK
5.7 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
BMWM3 Convertible (E93)4.0 V8
232 hp/t
173 kW/t
4.3 kg/hp
12.9 L/100 km
18.2 mpg US
21.9 mpg UK
BMW6 Series Convertible (E64)650i
198 hp/t
148 kW/t
5.0 kg/hp
12.9 L/100 km
18.2 mpg US
21.9 mpg UK

Detailed score breakdown

Detailed score breakdown
VehicleBMWM3 Convertible (E93)4.0 V8BMW6 Series Convertible (E64)650i
Power
420 hp
313 kW
367 hp
274 kW
Torque
400 Nm
295 lb-ft
490 Nm
361 lb-ft
Acceleration
5.3 s
5.7 s
Top speed
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
Lightness
1,810 kg
3,990 lb
1,850 kg
4,079 lb
Fuel consumption
12.9 L/100 km
18.2 mpg US
21.9 mpg UK
12.9 L/100 km
18.2 mpg US
21.9 mpg UK
Practicality
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
Doors/seats
2 doors
4 seats
Trunk
300 L
10.6 cu ft
Length
4,820 mm
189.8 in
Height
1,373 mm
54.1 in
Range score
488 km
303 mi
543 km
337 mi
Trunk score
210 L
7.4 cu ft
300 L
10.6 cu ft
Power-to-weight score
232 hp/t
173 kW/t
4.3 kg/hp
198 hp/t
148 kW/t
5.0 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 M3 Convertible (E93) 4.0 V8BMW 6 Series Convertible (E64) 650i
Consumption12.9 L/100 km18.2 mpg US21.9 mpg UK12.9 L/100 km18.2 mpg US21.9 mpg UK
Cost / 100 km22.58 LC100 km22.58 LC100 km
Cost / 100 mi36.33 LC100 mi36.33 LC100 mi
Annual fuel used1,935 L511 US gal426 UK gal1,935 L511 US gal426 UK gal
Annual fuel cost3,386 LC/year3,386 LC/year

Head-to-head comparisons

BMW M3 Convertible (E93) 4.0 V8

  • Has 53 hp more
  • Is 40 kg lighter
  • Is 0.4 s quicker from 0-100 km/h
  • Has 34 hp/t better power-to-weight

Pros

  • Quickest 0-100 km/h in this comparison
  • Highest top speed
  • Most powerful
  • Lightest
  • Lowest combined fuel consumption
  • Best power-to-weight ratio

Cons

  • Smallest trunk

BMW 6 Series Convertible (E64) 650i

  • Has 90 Nm more
  • Has 54 km (34 mi) more estimated range
  • Has 90 L more trunk volume

Pros

  • Highest torque
  • Best estimated range
  • Largest trunk

Cons

  • Slowest 0-100 km/h
  • Lowest power
  • Heaviest

Choose cars to compare

Brand
Model
Generation
Engine or modification
BMW M3 Convertible (E93) 4.0 V8
BMW 6 Series Convertible (E64) 650i
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