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

450 hp4395 ccGasolineRWDAutomaticTurbochargedCoupe2012-2015
VS

BMW 6 Series Convertible (F12)

650i

450 hp4395 ccGasolineAWDAutomaticTurbochargedCabriolet / convertible2012-2015

Comparison overview

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

Best choices

BMW 6 Series Coupe (F13) 650i

  • Fastest top speed
    265 km/h
    165 mph Unrestricted
    250 km/h
    155 mph Restricted
  • Most powerful
    450 hp
    336 kW
  • Highest torque
    650 Nm
    479 lb-ft
  • Lightest
    1,795 kg
    3,957 lb
  • Best power-to-weight
    251 hp/t
    187 kW/t
    4.0 kg/hp
  • Lowest combined fuel consumption
    8.9 L/100 km
    26.4 mpg US
    31.7 mpg UK
  • Lowest city consumption
    12.4 L/100 km
    19.0 mpg US
    22.8 mpg UK
  • Lowest highway consumption
    6.9 L/100 km
    34.1 mpg US
    40.9 mpg UK
  • Lowest CO2 emissions
    206 g/km
  • Best estimated range
    787 km
    489 mi
  • Largest trunk
    460 L
  • Best overall score
    72/100
  • Best performance score
    80/100
  • Best economy score
    83/100
  • Best practicality score
    54/100

Specification comparison

Specification comparison
ModelBMW6 Series Coupe (F13)650iBMW6 Series Convertible (F12)650i
Power
450hp336kW
450hp336kW
Torque
650Nm479lb-ft
650Nm479lb-ft
Curb weight
1,795kg3,957lb
1,980kg4,365lb
Gross weight
2,290kg5,049lb
2,480kg5,467lb
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
60.7s99% target: 262 km/h / 163 mph
Calculated
61.6s99% target: 257 km/h / 160 mph
Calculated
0-100 km/h
4.6s
4.5s
0-200 km/h
15.8s
Calculated
16.3s
Calculated
0-60 mph
4.4s
Calculated
4.3s
Calculated
Fuel consumption
8.9L/100 km26.4mpg US31.7mpg UK
9.5L/100 km24.8mpg US29.7mpg UK
Fuel consumption city
12.4L/100 km19mpg US22.8mpg UK
13.3L/100 km17.7mpg US21.2mpg UK
Fuel consumption highway
6.9L/100 km34.1mpg US40.9mpg UK
7.3L/100 km32.2mpg US38.7mpg UK
Quarter mile
12.7s
Calculated
12.7s
Calculated
Power-to-weight
251hp/t187kW/t114hp/1000 lb
Calculated
227hp/t169kW/t103hp/1000 lb
Calculated
Torque-to-weight
362Nm/t242lb-ft/ton
Calculated
328Nm/t220lb-ft/ton
Calculated
Estimated range
787km489mi
Calculated
737km458mi
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
1,665mm66in
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
206g/km
221g/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 rpm2,000-4,500 rpm5,750 rpm
BMW6 Series Convertible (F12)650i5,500 rpm2,000-4,500 rpm5,750 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
4.4 s
4.3 s
0-100 km/h
0-62 mph
4.6 s
4.5 s
0-200 km/h
0-124 mph
15.8 s
16.3 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
5.5 s
5.5 s
1/8 mile
201 m
8.3 s
8.2 s
1000 ft
305 m
10.7 s
10.6 s
1/4 mile
402 m
12.7 s
12.7 s
Trap speed
1/4 mile
402 m
182 km/h
113 mph
180 km/h
112 mph

Power comparison

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

Chart data table
VehicleValue
BMW6 Series Coupe (F13)650i
450 hp
336 kW
BMW6 Series Convertible (F12)650i
450 hp
336 kW

Torque comparison

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

Chart data table
VehicleValue
BMW6 Series Coupe (F13)650i
650 Nm
479 lb-ft
BMW6 Series Convertible (F12)650i
650 Nm
479 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
1,795 kg
3,957 lb
BMW6 Series Convertible (F12)650i
1,980 kg
4,365 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)650i4.6 s
BMW6 Series Convertible (F12)650i4.5 s

The biggest 0-100 km/h difference is between BMW 6 Series Convertible (F12) 650i and BMW 6 Series Coupe (F13) 650i: 0.1 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
8.9 L/100 km
26.4 mpg US
31.7 mpg UK
BMW6 Series Convertible (F12)650i
9.5 L/100 km
24.8 mpg US
29.7 mpg UK

The biggest fuel consumption difference is between BMW 6 Series Coupe (F13) 650i and BMW 6 Series Convertible (F12) 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
251 hp/t
187 kW/t
4.0 kg/hp
BMW6 Series Convertible (F12)650i
227 hp/t
169 kW/t
4.4 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
787 km
489 mi
BMW6 Series Convertible (F12)650i
737 km
458 mi

Performance spider chart

Radar chart comparing normalized performance and fuel-consumption scores.

Chart data table
VehiclePowerAccelerationTop speed
BMW6 Series Coupe (F13)650i
450 hp
336 kW
4.6 s
Unrestricted
265 km/h165 mph
Restricted
250 km/h155 mph
BMW6 Series Convertible (F12)650i
450 hp
336 kW
4.5 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
450 hp
336 kW
0-100 km/h4.6 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
450 hp
336 kW
0-100 km/h4.5 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
450 hp
336 kW
0-100 km/h4.6 s
Top speed
Unrestricted
265 km/h165 mph
Restricted
250 km/h155 mph
8.9 L/100 km
26.4 mpg US
31.7 mpg UK
BMW6 Series Convertible (F12)650i
Power
450 hp
336 kW
0-100 km/h4.5 s
Top speed
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
9.5 L/100 km
24.8 mpg US
29.7 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
8.9 L/100 km
26.4 mpg US
31.7 mpg UK
4.6 s
BMW6 Series Convertible (F12)650i
9.5 L/100 km
24.8 mpg US
29.7 mpg UK
4.5 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
251 hp/t
187 kW/t
4.0 kg/hp
8.9 L/100 km
26.4 mpg US
31.7 mpg UK
BMW6 Series Convertible (F12)650i
227 hp/t
169 kW/t
4.4 kg/hp
9.5 L/100 km
24.8 mpg US
29.7 mpg UK

Detailed score breakdown

Detailed score breakdown
VehicleBMW6 Series Coupe (F13)650iBMW6 Series Convertible (F12)650i
Power
450 hp
336 kW
450 hp
336 kW
Torque
650 Nm
479 lb-ft
650 Nm
479 lb-ft
Acceleration
4.6 s
4.5 s
Top speed
Unrestricted
265 km/h165 mph
Restricted
250 km/h155 mph
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
Lightness
1,795 kg
3,957 lb
1,980 kg
4,365 lb
Fuel consumption
8.9 L/100 km
26.4 mpg US
31.7 mpg UK
9.5 L/100 km
24.8 mpg US
29.7 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
787 km
489 mi
737 km
458 mi
CO2 score
206 g/km
221 g/km
Trunk score
460 L
16.2 cu ft
300 L
10.6 cu ft
Power-to-weight score
251 hp/t
187 kW/t
4.0 kg/hp
227 hp/t
169 kW/t
4.4 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
Consumption8.9 L/100 km26.4 mpg US31.7 mpg UK9.5 L/100 km24.8 mpg US29.7 mpg UK
Cost / 100 km15.58 LC100 km16.63 LC100 km
Cost / 100 mi25.07 LC100 mi26.76 LC100 mi
Annual fuel used1,335 L353 US gal294 UK gal1,425 L376 US gal313 UK gal
Annual fuel cost2,336 LC/year2,494 LC/year

Head-to-head comparisons

BMW 6 Series Coupe (F13) 650i

  • Is 185 kg lighter
  • Has 5 km/h (3 mph) higher top speed
  • Uses 0.6 L/100 km less fuel
  • Has 23 hp/t better power-to-weight
  • Has 50 km (31 mi) more estimated range
  • Has 160 L more trunk volume
  • Emits 15 g/km less CO2

Pros

  • Highest top speed
  • Most powerful
  • Highest torque
  • Lightest
  • Lowest combined fuel consumption
  • Best power-to-weight ratio
  • Best estimated range
  • Largest trunk

Cons

  • Slowest 0-100 km/h

BMW 6 Series Convertible (F12) 650i

  • Is 0.1 s quicker from 0-100 km/h

Pros

  • Quickest 0-100 km/h in this comparison

Cons

  • Highest combined fuel consumption
  • Heaviest
  • Lowest top speed
  • Smallest trunk
  • Highest CO2 emissions

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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