Car comparison

BMW 6 Series Convertible (E64) 645CivsFord Mustang V Convertible 4.6 i V8 24V

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

New comparison

BMW 6 Series Convertible (E64)

645Ci

333 hp4398 ccGasolineRWDManualNaturally aspiratedCabriolet / convertible2003-2005
VS

Ford Mustang V Convertible

4.6 i V8 24V

304 hp4601 ccGasolineRWDManualNaturally aspiratedCabriolet / convertible2005-2009

Comparison overview

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

Best choices

BMW 6 Series Convertible (E64) 645Ci

  • Fastest top speed
    260 km/h
    162 mph Unrestricted
    250 km/h
    155 mph Restricted
  • Most powerful
    333 hp
    248 kW
  • Highest torque
    450 Nm
    332 lb-ft
  • Best power-to-weight
    183 hp/t
    137 kW/t
    5.5 kg/hp
  • Largest trunk
    300 L
  • Best overall score
    59/100
  • Best performance score
    65/100
  • Best economy score
    72/100
  • Best practicality score
    45/100

Ford Mustang V Convertible 4.6 i V8 24V

  • Quickest 0-100 km/h
    5.3 s
  • Lightest
    1,685 kg
    3,715 lb
  • Lowest city consumption
    13.9 L/100 km
    16.9 mpg US
    20.3 mpg UK
  • Lowest highway consumption
    9.4 L/100 km
    25.0 mpg US
    30.1 mpg UK

Specification comparison

Specification comparison
ModelBMW6 Series Convertible (E64)645CiFordMustang V Convertible4.6 i V8 24V
Power
333hp248kW
304hp227kW
Torque
450Nm332lb-ft
434Nm320lb-ft
Curb weight
1,815kg4,001lb
1,685kg3,715lb
Gross weight
2,215kg4,883lb
-
Top speed
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
Calculated
Unrestricted
240 km/h149 mph
Restricted
230 km/h143 mph
Calculated
To 99% top speed
87.9s99% target: 257 km/h / 160 mph
Calculated
68.3s99% target: 238 km/h / 148 mph
Calculated
0-100 km/h
6.1s
5.3s
0-200 km/h
22.6s
Calculated
22.2s
Calculated
0-60 mph
5.8s
Calculated
5.0s
Calculated
Fuel consumption
12.9L/100 km18.2mpg US21.9mpg UK
-
Fuel consumption city
18.5L/100 km12.7mpg US15.3mpg UK
13.9L/100 km16.9mpg US20.3mpg UK
Fuel consumption highway
9.6L/100 km24.5mpg US29.4mpg UK
9.4L/100 km25mpg US30.1mpg UK
Quarter mile
14.2s
Calculated
13.5s
Calculated
Power-to-weight
183hp/t137kW/t83hp/1000 lb
Calculated
180hp/t135kW/t82hp/1000 lb
Calculated
Torque-to-weight
248Nm/t166lb-ft/ton
Calculated
258Nm/t172lb-ft/ton
Calculated
Estimated range
543km337mi
Calculated
-
Displacement
4,398cc268cu in
4,601cc281cu in
Length
4,820mm190in
4,765mm188in
Width
1,855mm73in
1,877mm74in
Height
1,373mm54in
1,415mm56in
Wheelbase
2,780mm109in
2,720mm107in
Front track
1,558mm61in
1,585mm62in
Rear track
1,592mm63in
1,600mm63in
Trunk volume
300L
275L
Max trunk volume
350L
-
Doors
2
2
Seats
4
4
Fuel tank
70L
61L

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 (E64) 645CiFord Mustang V Convertible 4.6 i V8 24VPowerTorque
  • BMW 6 Series Convertible (E64) 645Ci: Power / Torque
  • Ford Mustang V Convertible 4.6 i V8 24V: Power / Torque
Dyno simulation data table
VehiclePeak power RPMPeak torque RPMMax engine speed
BMW6 Series Convertible (E64)645Ci6,100 rpm3,600 rpm6,350 rpm
FordMustang V Convertible4.6 i V8 24V5,750 rpm4,500 rpm6,000 rpm

Acceleration curve

Estimated speed over time for selected vehicles.

Acceleration and drag-race table
MetricBMW6 Series Convertible (E64)645CiFordMustang V Convertible4.6 i V8 24V
Acceleration checkpoints
0-60 mph
0-97 km/h
5.8 s
5.0 s
0-100 km/h
0-62 mph
6.1 s
5.3 s
0-200 km/h
0-124 mph
22.6 s
22.2 s
Top speed
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
Likely limited
Unrestricted
240 km/h149 mph
Restricted
230 km/h143 mph
Likely limited
Drag race simulation
60 ft
18 m
2.3 s
2.2 s
330 ft
101 m
6.2 s
5.8 s
1/8 mile
201 m
9.3 s
8.8 s
1000 ft
305 m
12.0 s
11.4 s
1/4 mile
402 m
14.2 s
13.5 s
Trap speed
1/4 mile
402 m
163 km/h
101 mph
167 km/h
104 mph

Power comparison

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

Chart data table
VehicleValue
BMW6 Series Convertible (E64)645Ci
333 hp
248 kW
FordMustang V Convertible4.6 i V8 24V
304 hp
227 kW

BMW 6 Series Convertible (E64) 645Ci has 29 hp more than Ford Mustang V Convertible 4.6 i V8 24V.

The biggest power difference is between Ford Mustang V Convertible 4.6 i V8 24V and BMW 6 Series Convertible (E64) 645Ci: 29 hp (22 kW).

Torque comparison

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

Chart data table
VehicleValue
BMW6 Series Convertible (E64)645Ci
450 Nm
332 lb-ft
FordMustang V Convertible4.6 i V8 24V
434 Nm
320 lb-ft

Curb weight comparison

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

Chart data table
VehicleValue
BMW6 Series Convertible (E64)645Ci
1,815 kg
4,001 lb
FordMustang V Convertible4.6 i V8 24V
1,685 kg
3,715 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 (E64)645Ci
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
FordMustang V Convertible4.6 i V8 24V
Unrestricted
240 km/h149 mph
Restricted
230 km/h143 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 (E64)645Ci6.1 s
FordMustang V Convertible4.6 i V8 24V5.3 s

Although BMW 6 Series Convertible (E64) 645Ci has more power, Ford Mustang V Convertible 4.6 i V8 24V is quicker from 0-100 km/h.

The biggest 0-100 km/h difference is between Ford Mustang V Convertible 4.6 i V8 24V and BMW 6 Series Convertible (E64) 645Ci: 0.8 s.

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 (E64)645Ci
183 hp/t
137 kW/t
5.5 kg/hp
FordMustang V Convertible4.6 i V8 24V
180 hp/t
135 kW/t
5.5 kg/hp

Performance spider chart

Radar chart comparing normalized performance and fuel-consumption scores.

Chart data table
VehiclePowerAccelerationTop speed
BMW6 Series Convertible (E64)645Ci
333 hp
248 kW
6.1 s
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
FordMustang V Convertible4.6 i V8 24V
304 hp
227 kW
5.3 s
Unrestricted
240 km/h149 mph
Restricted
230 km/h143 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 (E64)645Ci
Power
333 hp
248 kW
0-100 km/h6.1 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
FordMustang V Convertible4.6 i V8 24V
Power
304 hp
227 kW
0-100 km/h5.3 s
Top speed
Unrestricted
240 km/h149 mph
Restricted
230 km/h143 mph
Doors/seats
2 doors
4 seats
Trunk
275 L
9.7 cu ft
Length
4,765 mm
187.6 in
Height
1,415 mm
55.7 in

Detailed score breakdown

Detailed score breakdown
VehicleBMW6 Series Convertible (E64)645CiFordMustang V Convertible4.6 i V8 24V
Power
333 hp
248 kW
304 hp
227 kW
Torque
450 Nm
332 lb-ft
434 Nm
320 lb-ft
Acceleration
6.1 s
5.3 s
Top speed
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
Unrestricted
240 km/h149 mph
Restricted
230 km/h143 mph
Lightness
1,815 kg
4,001 lb
1,685 kg
3,715 lb
Fuel consumption
12.9 L/100 km
18.2 mpg US
21.9 mpg UK
-
Practicality
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
Doors/seats
2 doors
4 seats
Trunk
275 L
9.7 cu ft
Length
4,765 mm
187.6 in
Height
1,415 mm
55.7 in
Range score
543 km
337 mi
-
Trunk score
300 L
10.6 cu ft
275 L
9.7 cu ft
Power-to-weight score
183 hp/t
137 kW/t
5.5 kg/hp
180 hp/t
135 kW/t
5.5 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 (E64) 645Ci
Consumption12.9 L/100 km18.2 mpg US21.9 mpg UK
Cost / 100 km22.58 LC100 km
Cost / 100 mi36.33 LC100 mi
Annual fuel used1,935 L511 US gal426 UK gal
Annual fuel cost3,386 LC/year

Head-to-head comparisons

BMW 6 Series Convertible (E64) 645Ci

  • Has 29 hp more
  • Has 16 Nm more
  • Has 20 km/h (12 mph) higher top speed
  • Has 3 hp/t better power-to-weight
  • Has 25 L more trunk volume

Pros

  • Highest top speed
  • Most powerful
  • Highest torque
  • Best power-to-weight ratio
  • Largest trunk

Cons

  • Slowest 0-100 km/h
  • Heaviest

Choose cars to compare

Brand
Model
Generation
Engine or modification
BMW 6 Series Convertible (E64) 645Ci
Ford Mustang V Convertible 4.6 i V8 24V
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