Car comparison

BMW 6 Series (E63) 650ivsBMW 6 Series Convertible (E64) 650i

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

New comparison

BMW 6 Series (E63)

650i

367 hp4799 ccGasolineRWDAutomaticNaturally aspiratedCoupe2005-2007
VS

BMW 6 Series Convertible (E64)

650i

367 hp4799 ccGasolineRWDAutomaticNaturally aspiratedCabriolet / convertible2005-2007

Comparison overview

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

Best choices

BMW 6 Series (E63) 650i

  • Quickest 0-100 km/h
    5.5 s
  • Fastest top speed
    265 km/h
    165 mph Unrestricted
    250 km/h
    155 mph Restricted
  • Most powerful
    367 hp
    274 kW
  • Highest torque
    490 Nm
    361 lb-ft
  • Lightest
    1,645 kg
    3,627 lb
  • Best power-to-weight
    223 hp/t
    166 kW/t
    4.5 kg/hp
  • Lowest combined fuel consumption
    11.1 L/100 km
    21.2 mpg US
    25.4 mpg UK
  • Lowest city consumption
    16.3 L/100 km
    14.4 mpg US
    17.3 mpg UK
  • Lowest highway consumption
    8.1 L/100 km
    29.0 mpg US
    34.9 mpg UK
  • Best estimated range
    631 km
    392 mi
  • Largest trunk
    450 L
  • Best overall score
    65/100
  • Best performance score
    71/100
  • Best economy score
    77/100
  • Best practicality score
    53/100

Specification comparison

Specification comparison
ModelBMW6 Series (E63)650iBMW6 Series Convertible (E64)650i
Power
367hp274kW
367hp274kW
Torque
490Nm361lb-ft
490Nm361lb-ft
Curb weight
1,645kg3,627lb
1,855kg4,090lb
Gross weight
2,095kg4,619lb
2,255kg4,971lb
Top speed
Unrestricted
265 km/h165 mph
Restricted
250 km/h155 mph
Calculated
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
Calculated
To 99% top speed
72.3s99% target: 262 km/h / 163 mph
Calculated
80.4s99% target: 257 km/h / 160 mph
Calculated
0-100 km/h
5.5s
5.8s
0-200 km/h
18.9s
Calculated
21.1s
Calculated
0-60 mph
5.2s
Calculated
5.5s
Calculated
Fuel consumption
11.1L/100 km21.2mpg US25.4mpg UK
11.7L/100 km20.1mpg US24.1mpg UK
Fuel consumption city
16.3L/100 km14.4mpg US17.3mpg UK
17.2L/100 km13.7mpg US16.4mpg UK
Fuel consumption highway
8.1L/100 km29mpg US34.9mpg UK
8.5L/100 km27.7mpg US33.2mpg UK
Quarter mile
13.6s
Calculated
13.9s
Calculated
Power-to-weight
223hp/t166kW/t101hp/1000 lb
Calculated
198hp/t148kW/t90hp/1000 lb
Calculated
Torque-to-weight
298Nm/t199lb-ft/ton
Calculated
264Nm/t177lb-ft/ton
Calculated
Estimated range
631km392mi
Calculated
598km372mi
Calculated
Displacement
4,799cc293cu in
4,799cc293cu in
Length
4,820mm190in
4,820mm190in
Width
1,855mm73in
1,855mm73in
Height
1,373mm54in
1,373mm54in
Wheelbase
2,780mm109in
2,780mm109in
Front track
1,558mm61in
1,558mm61in
Rear track
1,596mm63in
1,596mm63in
Trunk volume
450L
300L
Max trunk volume-
350L
Doors
2
2
Seats
4
4
Fuel tank
70L
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 6 Series (E63) 650iBMW 6 Series Convertible (E64) 650iPowerTorque
  • BMW 6 Series (E63) 650i: Power / Torque
  • BMW 6 Series Convertible (E64) 650i: Power / Torque
Dyno simulation data table
VehiclePeak power RPMPeak torque RPMMax engine speed
BMW6 Series (E63)650i6,300 rpm3,400 rpm6,550 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
MetricBMW6 Series (E63)650iBMW6 Series Convertible (E64)650i
Acceleration checkpoints
0-60 mph
0-97 km/h
5.2 s
5.5 s
0-100 km/h
0-62 mph
5.5 s
5.8 s
0-200 km/h
0-124 mph
18.9 s
21.1 s
Top speed
Unrestricted
265 km/h165 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
2.3 s
2.3 s
330 ft
101 m
6.0 s
6.1 s
1/8 mile
201 m
8.9 s
9.1 s
1000 ft
305 m
11.5 s
11.7 s
1/4 mile
402 m
13.6 s
13.9 s
Trap speed
1/4 mile
402 m
172 km/h
107 mph
167 km/h
104 mph

Power comparison

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

Chart data table
VehicleValue
BMW6 Series (E63)650i
367 hp
274 kW
BMW6 Series Convertible (E64)650i
367 hp
274 kW

Torque comparison

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

Chart data table
VehicleValue
BMW6 Series (E63)650i
490 Nm
361 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
BMW6 Series (E63)650i
1,645 kg
3,627 lb
BMW6 Series Convertible (E64)650i
1,855 kg
4,090 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 (E63)650i
Unrestricted
265 km/h165 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
BMW6 Series (E63)650i5.5 s
BMW6 Series Convertible (E64)650i5.8 s

The biggest 0-100 km/h difference is between BMW 6 Series (E63) 650i and BMW 6 Series Convertible (E64) 650i: 0.3 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 (E63)650i
11.1 L/100 km
21.2 mpg US
25.4 mpg UK
BMW6 Series Convertible (E64)650i
11.7 L/100 km
20.1 mpg US
24.1 mpg UK

The biggest fuel consumption difference is between BMW 6 Series (E63) 650i and BMW 6 Series Convertible (E64) 650i: 0.6 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 (E63)650i
223 hp/t
166 kW/t
4.5 kg/hp
BMW6 Series Convertible (E64)650i
198 hp/t
148 kW/t
5.1 kg/hp

Estimated range comparison

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

Chart data table
VehicleValue
BMW6 Series (E63)650i
631 km
392 mi
BMW6 Series Convertible (E64)650i
598 km
372 mi

Performance spider chart

Radar chart comparing normalized performance and fuel-consumption scores.

Chart data table
VehiclePowerAccelerationTop speed
BMW6 Series (E63)650i
367 hp
274 kW
5.5 s
Unrestricted
265 km/h165 mph
Restricted
250 km/h155 mph
BMW6 Series Convertible (E64)650i
367 hp
274 kW
5.8 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 (E63)650i
Power
367 hp
274 kW
0-100 km/h5.5 s
Top speed
Unrestricted
265 km/h165 mph
Restricted
250 km/h155 mph
Doors/seats
2 doors
4 seats
Trunk
450 L
15.9 cu ft
Length
4,820 mm
189.8 in
Height
1,373 mm
54.1 in
BMW6 Series Convertible (E64)650i
Power
367 hp
274 kW
0-100 km/h5.8 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
BMW6 Series (E63)650i
Power
367 hp
274 kW
0-100 km/h5.5 s
Top speed
Unrestricted
265 km/h165 mph
Restricted
250 km/h155 mph
11.1 L/100 km
21.2 mpg US
25.4 mpg UK
BMW6 Series Convertible (E64)650i
Power
367 hp
274 kW
0-100 km/h5.8 s
Top speed
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
11.7 L/100 km
20.1 mpg US
24.1 mpg UK

BMW 6 Series (E63) 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 (E63)650i
11.1 L/100 km
21.2 mpg US
25.4 mpg UK
5.5 s
BMW6 Series Convertible (E64)650i
11.7 L/100 km
20.1 mpg US
24.1 mpg UK
5.8 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 (E63)650i
223 hp/t
166 kW/t
4.5 kg/hp
11.1 L/100 km
21.2 mpg US
25.4 mpg UK
BMW6 Series Convertible (E64)650i
198 hp/t
148 kW/t
5.1 kg/hp
11.7 L/100 km
20.1 mpg US
24.1 mpg UK

Detailed score breakdown

Detailed score breakdown
VehicleBMW6 Series (E63)650iBMW6 Series Convertible (E64)650i
Power
367 hp
274 kW
367 hp
274 kW
Torque
490 Nm
361 lb-ft
490 Nm
361 lb-ft
Acceleration
5.5 s
5.8 s
Top speed
Unrestricted
265 km/h165 mph
Restricted
250 km/h155 mph
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
Lightness
1,645 kg
3,627 lb
1,855 kg
4,090 lb
Fuel consumption
11.1 L/100 km
21.2 mpg US
25.4 mpg UK
11.7 L/100 km
20.1 mpg US
24.1 mpg UK
Practicality
Doors/seats
2 doors
4 seats
Trunk
450 L
15.9 cu ft
Length
4,820 mm
189.8 in
Height
1,373 mm
54.1 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
631 km
392 mi
598 km
372 mi
Trunk score
450 L
15.9 cu ft
300 L
10.6 cu ft
Power-to-weight score
223 hp/t
166 kW/t
4.5 kg/hp
198 hp/t
148 kW/t
5.1 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 (E63) 650iBMW 6 Series Convertible (E64) 650i
Consumption11.1 L/100 km21.2 mpg US25.4 mpg UK11.7 L/100 km20.1 mpg US24.1 mpg UK
Cost / 100 km19.43 LC100 km20.47 LC100 km
Cost / 100 mi31.26 LC100 mi32.95 LC100 mi
Annual fuel used1,665 L440 US gal366 UK gal1,755 L464 US gal386 UK gal
Annual fuel cost2,914 LC/year3,071 LC/year

Head-to-head comparisons

BMW 6 Series (E63) 650i

  • Is 210 kg lighter
  • Is 0.3 s quicker from 0-100 km/h
  • Has 5 km/h (3 mph) higher top speed
  • Uses 0.6 L/100 km less fuel
  • Has 25 hp/t better power-to-weight
  • Has 32 km (20 mi) more estimated range
  • Has 150 L more trunk volume

Pros

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

BMW 6 Series Convertible (E64) 650i

No measurable advantages in the available data.

Cons

  • Slowest 0-100 km/h
  • Highest combined fuel consumption
  • Heaviest
  • Lowest top speed
  • Smallest trunk

Choose cars to compare

Brand
Model
Generation
Engine or modification
BMW 6 Series (E63) 650i
BMW 6 Series Convertible (E64) 650i
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