Car comparison

BMW 6 Series Coupe (F13) 650ivsBMW 6 Series Convertible (F12) 650i

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 Convertible (F12)

650i

407 hp4395 ccGasolineRWDAutomaticTurbochargedCabriolet / convertible2011-2012

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
  • Lightest
    1,845 kg
    4,068 lb
  • Best power-to-weight
    221 hp/t
    164 kW/t
    4.5 kg/hp
  • Largest trunk
    460 L
  • Best overall score
    69/100
  • Best performance score
    76/100
  • Best practicality score
    54/100

BMW 6 Series Convertible (F12) 650i

  • Lowest combined fuel consumption
    10.7 L/100 km
    22.0 mpg US
    26.4 mpg UK
  • Lowest city consumption
    15.5 L/100 km
    15.2 mpg US
    18.2 mpg UK
  • Lowest highway consumption
    7.9 L/100 km
    29.8 mpg US
    35.8 mpg UK
  • Lowest CO2 emissions
    249 g/km
  • Best estimated range
    654 km
    407 mi
  • Best economy score
    78/100

Specification comparison

Specification comparison
ModelBMW6 Series Coupe (F13)650iBMW6 Series Convertible (F12)650i
Power
407hp304kW
407hp304kW
Torque
600Nm443lb-ft
600Nm443lb-ft
Curb weight
1,845kg4,068lb
1,940kg4,277lb
Gross weight
2,350kg5,181lb
2,390kg5,269lb
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
68.5s99% target: 262 km/h / 163 mph
Calculated
70.2s99% target: 257 km/h / 160 mph
Calculated
0-100 km/h
4.8s
5.0s
0-200 km/h
17.1s
Calculated
18.3s
Calculated
0-60 mph
4.6s
Calculated
4.7s
Calculated
Fuel consumption
11.3L/100 km20.8mpg US25.0mpg UK
10.7L/100 km22mpg US26.4mpg UK
Fuel consumption city
16.5L/100 km14.3mpg US17.1mpg UK
15.5L/100 km15.2mpg US18.2mpg UK
Fuel consumption highway
8.3L/100 km28.3mpg US34.0mpg UK
7.9L/100 km29.8mpg US35.8mpg UK
Quarter mile
12.9s
Calculated
13.2s
Calculated
Power-to-weight
221hp/t164kW/t100hp/1000 lb
Calculated
210hp/t156kW/t95hp/1000 lb
Calculated
Torque-to-weight
325Nm/t218lb-ft/ton
Calculated
309Nm/t207lb-ft/ton
Calculated
Estimated range
619km385mi
Calculated
654km407mi
Calculated
Displacement
4,395cc268cu in
4,395cc268cu in
Length
4,894mm193in
4,894mm193in
Width
1,894mm75in
1,894mm75in
Height
1,369mm54in
1,365mm54in
Wheelbase
2,855mm112in
2,855mm112in
Front track
1,600mm63in
1,600mm63in
Rear track
1,657mm65in
1,665mm66in
Ground clearance
124mm5in
123mm5in
Trunk volume
460L
300L
Max trunk volume-
350L
Doors
2
2
Seats
4
4
Fuel tank
70L
70L
CO2 emissions
263g/km
249g/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 Convertible (F12) 650iPowerTorque
  • BMW 6 Series Coupe (F13) 650i: Power / Torque
  • BMW 6 Series Convertible (F12) 650i: 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 Convertible (F12)650i5,500-6,400 rpm1,750-4,500 rpm6,650 rpm

Acceleration curve

Estimated speed over time for selected vehicles.

Acceleration and drag-race table
MetricBMW6 Series Coupe (F13)650iBMW6 Series Convertible (F12)650i
Acceleration checkpoints
0-60 mph
0-97 km/h
4.6 s
4.7 s
0-100 km/h
0-62 mph
4.8 s
5.0 s
0-200 km/h
0-124 mph
17.1 s
18.3 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
2.1 s
2.1 s
330 ft
101 m
5.6 s
5.7 s
1/8 mile
201 m
8.4 s
8.6 s
1000 ft
305 m
10.9 s
11.1 s
1/4 mile
402 m
12.9 s
13.2 s
Trap speed
1/4 mile
402 m
177 km/h
110 mph
174 km/h
108 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 Convertible (F12)650i
407 hp
304 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 Convertible (F12)650i
600 Nm
443 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 Convertible (F12)650i
1,940 kg
4,277 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 Convertible (F12)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 Coupe (F13)650i4.8 s
BMW6 Series Convertible (F12)650i5.0 s

The biggest 0-100 km/h difference is between BMW 6 Series Coupe (F13) 650i and BMW 6 Series Convertible (F12) 650i: 0.2 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 Convertible (F12)650i
10.7 L/100 km
22.0 mpg US
26.4 mpg UK

The biggest fuel consumption difference is between BMW 6 Series Convertible (F12) 650i and BMW 6 Series Coupe (F13) 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 Coupe (F13)650i
221 hp/t
164 kW/t
4.5 kg/hp
BMW6 Series Convertible (F12)650i
210 hp/t
156 kW/t
4.8 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 Convertible (F12)650i
654 km
407 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 Convertible (F12)650i
407 hp
304 kW
5.0 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 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 Convertible (F12)650i
Power
407 hp
304 kW
0-100 km/h5.0 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

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 Convertible (F12)650i
Power
407 hp
304 kW
0-100 km/h5.0 s
Top speed
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
10.7 L/100 km
22.0 mpg US
26.4 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 Convertible (F12)650i
10.7 L/100 km
22.0 mpg US
26.4 mpg UK
5.0 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 Convertible (F12)650i
210 hp/t
156 kW/t
4.8 kg/hp
10.7 L/100 km
22.0 mpg US
26.4 mpg UK

Detailed score breakdown

Detailed score breakdown
VehicleBMW6 Series Coupe (F13)650iBMW6 Series Convertible (F12)650i
Power
407 hp
304 kW
407 hp
304 kW
Torque
600 Nm
443 lb-ft
600 Nm
443 lb-ft
Acceleration
4.8 s
5.0 s
Top speed
Unrestricted
265 km/h165 mph
Restricted
250 km/h155 mph
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
Lightness
1,845 kg
4,068 lb
1,940 kg
4,277 lb
Fuel consumption
11.3 L/100 km
20.8 mpg US
25.0 mpg UK
10.7 L/100 km
22.0 mpg US
26.4 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
300 L
10.6 cu ft
Length
4,894 mm
192.7 in
Height
1,365 mm
53.7 in
Range score
619 km
385 mi
654 km
407 mi
CO2 score
263 g/km
249 g/km
Trunk score
460 L
16.2 cu ft
300 L
10.6 cu ft
Power-to-weight score
221 hp/t
164 kW/t
4.5 kg/hp
210 hp/t
156 kW/t
4.8 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 Convertible (F12) 650i
Consumption11.3 L/100 km20.8 mpg US25 mpg UK10.7 L/100 km22 mpg US26.4 mpg UK
Cost / 100 km19.78 LC100 km18.72 LC100 km
Cost / 100 mi31.82 LC100 mi30.13 LC100 mi
Annual fuel used1,695 L448 US gal373 UK gal1,605 L424 US gal353 UK gal
Annual fuel cost2,966 LC/year2,809 LC/year

Head-to-head comparisons

BMW 6 Series Coupe (F13) 650i

  • Is 95 kg lighter
  • Is 0.2 s quicker from 0-100 km/h
  • Has 5 km/h (3 mph) higher top speed
  • Has 11 hp/t better power-to-weight
  • Has 160 L more trunk volume

Pros

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

Cons

  • Highest combined fuel consumption
  • Highest CO2 emissions

BMW 6 Series Convertible (F12) 650i

  • Uses 0.6 L/100 km less fuel
  • Has 35 km (22 mi) more estimated range
  • Emits 14 g/km less CO2

Pros

  • Lowest combined fuel consumption
  • Best estimated range

Cons

  • Slowest 0-100 km/h
  • Heaviest
  • Lowest top speed
  • Smallest trunk

Choose cars to compare

Brand
Model
Generation
Engine or modification
BMW 6 Series Coupe (F13) 650i
BMW 6 Series Convertible (F12) 650i
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