Car comparison

BMW 6 Series Coupe (F13) 650ivsBMW 6 Series (E63) 645Ci

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

New comparison

BMW 6 Series Coupe (F13)

650i

407 hp4395 ccGasolineAWDAutomaticTurbochargedCoupe2011-2012
VS

BMW 6 Series (E63)

645Ci

333 hp4398 ccGasolineRWDManualNaturally aspiratedCoupe2003-2005

Comparison overview

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

Best choices

BMW 6 Series Coupe (F13) 650i

  • Quickest 0-100 km/h
    4.8 s
  • Fastest top speed
    265 km/h
    165 mph Unrestricted
    250 km/h
    155 mph Restricted
  • Most powerful
    407 hp
    304 kW
  • Highest torque
    600 Nm
    443 lb-ft
  • Best power-to-weight
    221 hp/t
    164 kW/t
    4.5 kg/hp
  • Lowest combined fuel consumption
    11.3 L/100 km
    20.8 mpg US
    25.0 mpg UK
  • Lowest city consumption
    16.5 L/100 km
    14.3 mpg US
    17.1 mpg UK
  • Lowest highway consumption
    8.3 L/100 km
    28.3 mpg US
    34.0 mpg UK
  • Lowest CO2 emissions
    263 g/km
  • Best estimated range
    619 km
    385 mi
  • Largest trunk
    460 L
  • Best overall score
    69/100
  • Best performance score
    76/100
  • Best economy score
    77/100
  • Best practicality score
    54/100

Specification comparison

Specification comparison
ModelBMW6 Series Coupe (F13)650iBMW6 Series (E63)645Ci
Power
407hp304kW
333hp248kW
Torque
600Nm443lb-ft
450Nm332lb-ft
Curb weight
1,845kg4,068lb
1,690kg3,726lb
Gross weight
2,350kg5,181lb
2,065kg4,553lb
Top speed
Unrestricted
265 km/h165 mph
Restricted
250 km/h155 mph
Calculated
Unrestricted
265 km/h165 mph
Restricted
250 km/h155 mph
Calculated
To 99% top speed
67.9s99% target: 262 km/h / 163 mph
Calculated
76.8s99% target: 262 km/h / 163 mph
Calculated
0-100 km/h
4.8s
5.6s
0-200 km/h
17.0s
Calculated
19.6s
Calculated
0-60 mph
4.6s
Calculated
5.3s
Calculated
Fuel consumption
11.3L/100 km20.8mpg US25.0mpg UK
11.7L/100 km20.1mpg US24.1mpg UK
Fuel consumption city
16.5L/100 km14.3mpg US17.1mpg UK
17.2L/100 km13.7mpg US16.4mpg UK
Fuel consumption highway
8.3L/100 km28.3mpg US34.0mpg UK
8.6L/100 km27.4mpg US32.8mpg UK
Quarter mile
12.9s
Calculated
13.7s
Calculated
Power-to-weight
221hp/t164kW/t100hp/1000 lb
Calculated
197hp/t147kW/t89hp/1000 lb
Calculated
Torque-to-weight
325Nm/t218lb-ft/ton
Calculated
266Nm/t178lb-ft/ton
Calculated
Estimated range
619km385mi
Calculated
598km372mi
Calculated
Displacement
4,395cc268cu in
4,398cc268cu in
Length
4,894mm193in
4,820mm190in
Width
1,894mm75in
1,855mm73in
Height
1,369mm54in
1,373mm54in
Wheelbase
2,855mm112in
2,780mm109in
Front track
1,600mm63in
1,558mm61in
Rear track
1,657mm65in
1,592mm63in
Ground clearance
124mm5in
-
Trunk volume
460L
450L
Doors
2
2
Seats
4
4
Fuel tank
70L
70L
CO2 emissions
263g/km
283g/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 Coupe (F13) 650iBMW 6 Series (E63) 645CiPowerTorque
  • BMW 6 Series Coupe (F13) 650i: Power / Torque
  • BMW 6 Series (E63) 645Ci: Power / Torque
Dyno simulation data table
VehiclePeak power RPMPeak torque RPMMax engine speed
BMW6 Series Coupe (F13)650i5,500-6,400 rpm1,750-4,500 rpm6,650 rpm
BMW6 Series (E63)645Ci6,100 rpm3,600 rpm6,350 rpm

Acceleration curve

Estimated speed over time for selected vehicles.

Acceleration and drag-race table
MetricBMW6 Series Coupe (F13)650iBMW6 Series (E63)645Ci
Acceleration checkpoints
0-60 mph
0-97 km/h
4.6 s
5.3 s
0-100 km/h
0-62 mph
4.8 s
5.6 s
0-200 km/h
0-124 mph
17.0 s
19.6 s
Top speed
Unrestricted
265 km/h165 mph
Restricted
250 km/h155 mph
Likely limited
Unrestricted
265 km/h165 mph
Restricted
250 km/h155 mph
Likely limited
Drag race simulation
60 ft
18 m
2.1 s
2.3 s
330 ft
101 m
5.6 s
6.0 s
1/8 mile
201 m
8.4 s
9.0 s
1000 ft
305 m
10.9 s
11.6 s
1/4 mile
402 m
12.9 s
13.7 s
Trap speed
1/4 mile
402 m
178 km/h
110 mph
170 km/h
106 mph

Power comparison

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

Chart data table
VehicleValue
BMW6 Series Coupe (F13)650i
407 hp
304 kW
BMW6 Series (E63)645Ci
333 hp
248 kW

BMW 6 Series Coupe (F13) 650i has 74 hp more than BMW 6 Series (E63) 645Ci.

The biggest power difference is between BMW 6 Series (E63) 645Ci and BMW 6 Series Coupe (F13) 650i: 74 hp (55 kW).

Torque comparison

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

Chart data table
VehicleValue
BMW6 Series Coupe (F13)650i
600 Nm
443 lb-ft
BMW6 Series (E63)645Ci
450 Nm
332 lb-ft

Curb weight comparison

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

Chart data table
VehicleValue
BMW6 Series Coupe (F13)650i
1,845 kg
4,068 lb
BMW6 Series (E63)645Ci
1,690 kg
3,726 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 Coupe (F13)650i
Unrestricted
265 km/h165 mph
Restricted
250 km/h155 mph
BMW6 Series (E63)645Ci
Unrestricted
265 km/h165 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 Coupe (F13)650i4.8 s
BMW6 Series (E63)645Ci5.6 s

The biggest 0-100 km/h difference is between BMW 6 Series Coupe (F13) 650i and BMW 6 Series (E63) 645Ci: 0.8 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 Coupe (F13)650i
11.3 L/100 km
20.8 mpg US
25.0 mpg UK
BMW6 Series (E63)645Ci
11.7 L/100 km
20.1 mpg US
24.1 mpg UK

Power-to-weight comparison

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

Chart data table
VehicleValue
BMW6 Series Coupe (F13)650i
221 hp/t
164 kW/t
4.5 kg/hp
BMW6 Series (E63)645Ci
197 hp/t
147 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 Coupe (F13)650i
619 km
385 mi
BMW6 Series (E63)645Ci
598 km
372 mi

Performance spider chart

Radar chart comparing normalized performance and fuel-consumption scores.

Chart data table
VehiclePowerAccelerationTop speed
BMW6 Series Coupe (F13)650i
407 hp
304 kW
4.8 s
Unrestricted
265 km/h165 mph
Restricted
250 km/h155 mph
BMW6 Series (E63)645Ci
333 hp
248 kW
5.6 s
Unrestricted
265 km/h165 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 Coupe (F13)650i
Power
407 hp
304 kW
0-100 km/h4.8 s
Top speed
Unrestricted
265 km/h165 mph
Restricted
250 km/h155 mph
Doors/seats
2 doors
4 seats
Trunk
460 L
16.2 cu ft
Length
4,894 mm
192.7 in
Height
1,369 mm
53.9 in
BMW6 Series (E63)645Ci
Power
333 hp
248 kW
0-100 km/h5.6 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

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 Coupe (F13)650i
Power
407 hp
304 kW
0-100 km/h4.8 s
Top speed
Unrestricted
265 km/h165 mph
Restricted
250 km/h155 mph
11.3 L/100 km
20.8 mpg US
25.0 mpg UK
BMW6 Series (E63)645Ci
Power
333 hp
248 kW
0-100 km/h5.6 s
Top speed
Unrestricted
265 km/h165 mph
Restricted
250 km/h155 mph
11.7 L/100 km
20.1 mpg US
24.1 mpg UK

BMW 6 Series Coupe (F13) 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 Coupe (F13)650i
11.3 L/100 km
20.8 mpg US
25.0 mpg UK
4.8 s
BMW6 Series (E63)645Ci
11.7 L/100 km
20.1 mpg US
24.1 mpg UK
5.6 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 Coupe (F13)650i
221 hp/t
164 kW/t
4.5 kg/hp
11.3 L/100 km
20.8 mpg US
25.0 mpg UK
BMW6 Series (E63)645Ci
197 hp/t
147 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 Coupe (F13)650iBMW6 Series (E63)645Ci
Power
407 hp
304 kW
333 hp
248 kW
Torque
600 Nm
443 lb-ft
450 Nm
332 lb-ft
Acceleration
4.8 s
5.6 s
Top speed
Unrestricted
265 km/h165 mph
Restricted
250 km/h155 mph
Unrestricted
265 km/h165 mph
Restricted
250 km/h155 mph
Lightness
1,845 kg
4,068 lb
1,690 kg
3,726 lb
Fuel consumption
11.3 L/100 km
20.8 mpg US
25.0 mpg UK
11.7 L/100 km
20.1 mpg US
24.1 mpg UK
Practicality
Doors/seats
2 doors
4 seats
Trunk
460 L
16.2 cu ft
Length
4,894 mm
192.7 in
Height
1,369 mm
53.9 in
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
Range score
619 km
385 mi
598 km
372 mi
CO2 score
263 g/km
283 g/km
Trunk score
460 L
16.2 cu ft
450 L
15.9 cu ft
Power-to-weight score
221 hp/t
164 kW/t
4.5 kg/hp
197 hp/t
147 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 Coupe (F13) 650iBMW 6 Series (E63) 645Ci
Consumption11.3 L/100 km20.8 mpg US25 mpg UK11.7 L/100 km20.1 mpg US24.1 mpg UK
Cost / 100 km19.78 LC100 km20.47 LC100 km
Cost / 100 mi31.82 LC100 mi32.95 LC100 mi
Annual fuel used1,695 L448 US gal373 UK gal1,755 L464 US gal386 UK gal
Annual fuel cost2,966 LC/year3,071 LC/year

Head-to-head comparisons

BMW 6 Series Coupe (F13) 650i

  • Has 74 hp more
  • Has 150 Nm more
  • Is 0.8 s quicker from 0-100 km/h
  • Uses 0.4 L/100 km less fuel
  • Has 24 hp/t better power-to-weight
  • Has 21 km (13 mi) more estimated range
  • Has 10 L more trunk volume
  • Emits 20 g/km less CO2

Pros

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

Cons

  • Heaviest

BMW 6 Series (E63) 645Ci

  • Is 155 kg lighter

Pros

  • Lightest

Cons

  • Slowest 0-100 km/h
  • Lowest power
  • Highest combined fuel consumption
  • Smallest trunk
  • Highest CO2 emissions

Choose cars to compare

Brand
Model
Generation
Engine or modification
BMW 6 Series Coupe (F13) 650i
BMW 6 Series (E63) 645Ci
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