Car comparison

BMW 6 Series Convertible (F12) 650ivsBMW 1 Series Convertible (E88) 135i

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

New comparison

BMW 6 Series Convertible (F12)

650i

407 hp4395 ccGasolineAWDAutomaticTurbochargedCabriolet / convertible2011-2012
VS

BMW 1 Series Convertible (E88)

135i

306 hp2979 ccGasolineRWDDual-clutchTurbochargedCabriolet / convertible2010-2011

Comparison overview

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

Best choices

BMW 6 Series Convertible (F12) 650i

  • Quickest 0-100 km/h
    4.9 s
  • Fastest top speed
    260 km/h
    162 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
    205 hp/t
    153 kW/t
    4.9 kg/hp
  • Largest trunk
    300 L
  • Best overall score
    65/100
  • Best performance score
    74/100
  • Best practicality score
    45/100

BMW 1 Series Convertible (E88) 135i

  • Lightest
    1,600 kg
    3,527 lb
  • Lowest combined fuel consumption
    8.6 L/100 km
    27.4 mpg US
    32.8 mpg UK
  • Lowest city consumption
    11.8 L/100 km
    19.9 mpg US
    23.9 mpg UK
  • Lowest highway consumption
    6.8 L/100 km
    34.6 mpg US
    41.5 mpg UK
  • Best estimated range
    616 km
    383 mi
  • Best economy score
    84/100

Specification comparison

Specification comparison
ModelBMW6 Series Convertible (F12)650iBMW1 Series Convertible (E88)135i
Power
407hp304kW
306hp228kW
Torque
600Nm443lb-ft
400Nm295lb-ft
Curb weight
1,985kg4,376lb
1,600kg3,527lb
Gross weight
2,465kg5,434lb
2,040kg4,497lb
Top speed
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
Calculated
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
Calculated
To 99% top speed
69.6s99% target: 257 km/h / 160 mph
Calculated
77.7s99% target: 257 km/h / 160 mph
Calculated
0-100 km/h
4.9s
5.5s
0-200 km/h
18.1s
Calculated
20.2s
Calculated
0-60 mph
4.7s
Calculated
5.2s
Calculated
Fuel consumption
11.5L/100 km20.5mpg US24.6mpg UK
8.6L/100 km27.4mpg US32.8mpg UK
Fuel consumption city
16.6L/100 km14.2mpg US17.0mpg UK
11.8L/100 km19.9mpg US23.9mpg UK
Fuel consumption highway
8.5L/100 km27.7mpg US33.2mpg UK
6.8L/100 km34.6mpg US41.5mpg UK
Quarter mile
13.1s
Calculated
13.6s
Calculated
Power-to-weight
205hp/t153kW/t93hp/1000 lb
Calculated
191hp/t143kW/t87hp/1000 lb
Calculated
Torque-to-weight
302Nm/t202lb-ft/ton
Calculated
250Nm/t167lb-ft/ton
Calculated
Estimated range
609km378mi
Calculated
616km383mi
Calculated
Displacement
4,395cc268cu in
2,979cc182cu in
Length
4,894mm193in
4,360mm172in
Width
1,894mm75in
1,748mm69in
Height
1,365mm54in
1,411mm56in
Wheelbase
2,855mm112in
2,660mm105in
Front track
1,600mm63in
1,474mm58in
Rear track
1,665mm66in
1,507mm59in
Ground clearance
123mm5in
140mm6in
Trunk volume
300L
260L
Max trunk volume
350L
305L
Doors
2
2
Seats
4
4
Fuel tank
70L
53L
CO2 emissions
267g/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 Convertible (F12) 650iBMW 1 Series Convertible (E88) 135iPowerTorque
  • BMW 6 Series Convertible (F12) 650i: Power / Torque
  • BMW 1 Series Convertible (E88) 135i: Power / Torque
Dyno simulation data table
VehiclePeak power RPMPeak torque RPMMax engine speed
BMW6 Series Convertible (F12)650i5,500-6,400 rpm1,750-4,500 rpm6,650 rpm
BMW1 Series Convertible (E88)135i5,800 rpm1,200-5,000 rpm6,050 rpm

Acceleration curve

Estimated speed over time for selected vehicles.

Acceleration and drag-race table
MetricBMW6 Series Convertible (F12)650iBMW1 Series Convertible (E88)135i
Acceleration checkpoints
0-60 mph
0-97 km/h
4.7 s
5.2 s
0-100 km/h
0-62 mph
4.9 s
5.5 s
0-200 km/h
0-124 mph
18.1 s
20.2 s
Top speed
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
Likely limited
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
Limited
Drag race simulation
60 ft
18 m
2.1 s
2.2 s
330 ft
101 m
5.6 s
5.9 s
1/8 mile
201 m
8.5 s
8.9 s
1000 ft
305 m
11.0 s
11.5 s
1/4 mile
402 m
13.1 s
13.6 s
Trap speed
1/4 mile
402 m
175 km/h
109 mph
169 km/h
105 mph

Power comparison

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

Chart data table
VehicleValue
BMW6 Series Convertible (F12)650i
407 hp
304 kW
BMW1 Series Convertible (E88)135i
306 hp
228 kW

BMW 6 Series Convertible (F12) 650i has 101 hp more than BMW 1 Series Convertible (E88) 135i.

The biggest power difference is between BMW 1 Series Convertible (E88) 135i and BMW 6 Series Convertible (F12) 650i: 101 hp (75 kW).

Torque comparison

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

Chart data table
VehicleValue
BMW6 Series Convertible (F12)650i
600 Nm
443 lb-ft
BMW1 Series Convertible (E88)135i
400 Nm
295 lb-ft

Curb weight comparison

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

Chart data table
VehicleValue
BMW6 Series Convertible (F12)650i
1,985 kg
4,376 lb
BMW1 Series Convertible (E88)135i
1,600 kg
3,527 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 (F12)650i
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
BMW1 Series Convertible (E88)135i
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 Convertible (F12)650i4.9 s
BMW1 Series Convertible (E88)135i5.5 s

The biggest 0-100 km/h difference is between BMW 6 Series Convertible (F12) 650i and BMW 1 Series Convertible (E88) 135i: 0.6 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 Convertible (F12)650i
11.5 L/100 km
20.5 mpg US
24.6 mpg UK
BMW1 Series Convertible (E88)135i
8.6 L/100 km
27.4 mpg US
32.8 mpg UK

The biggest fuel consumption difference is between BMW 1 Series Convertible (E88) 135i and BMW 6 Series Convertible (F12) 650i: 2.9 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 Convertible (F12)650i
205 hp/t
153 kW/t
4.9 kg/hp
BMW1 Series Convertible (E88)135i
191 hp/t
143 kW/t
5.2 kg/hp

Estimated range comparison

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

Chart data table
VehicleValue
BMW6 Series Convertible (F12)650i
609 km
378 mi
BMW1 Series Convertible (E88)135i
616 km
383 mi

Performance spider chart

Radar chart comparing normalized performance and fuel-consumption scores.

Chart data table
VehiclePowerAccelerationTop speed
BMW6 Series Convertible (F12)650i
407 hp
304 kW
4.9 s
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
BMW1 Series Convertible (E88)135i
306 hp
228 kW
5.5 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 Convertible (F12)650i
Power
407 hp
304 kW
0-100 km/h4.9 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
BMW1 Series Convertible (E88)135i
Power
306 hp
228 kW
0-100 km/h5.5 s
Top speed
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
Doors/seats
2 doors
4 seats
Trunk
260 L
9.2 cu ft
Length
4,360 mm
171.7 in
Height
1,411 mm
55.6 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 Convertible (F12)650i
Power
407 hp
304 kW
0-100 km/h4.9 s
Top speed
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
11.5 L/100 km
20.5 mpg US
24.6 mpg UK
BMW1 Series Convertible (E88)135i
Power
306 hp
228 kW
0-100 km/h5.5 s
Top speed
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
8.6 L/100 km
27.4 mpg US
32.8 mpg UK

BMW 6 Series Convertible (F12) 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 Convertible (F12)650i
11.5 L/100 km
20.5 mpg US
24.6 mpg UK
4.9 s
BMW1 Series Convertible (E88)135i
8.6 L/100 km
27.4 mpg US
32.8 mpg UK
5.5 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 Convertible (F12)650i
205 hp/t
153 kW/t
4.9 kg/hp
11.5 L/100 km
20.5 mpg US
24.6 mpg UK
BMW1 Series Convertible (E88)135i
191 hp/t
143 kW/t
5.2 kg/hp
8.6 L/100 km
27.4 mpg US
32.8 mpg UK

Detailed score breakdown

Detailed score breakdown
VehicleBMW6 Series Convertible (F12)650iBMW1 Series Convertible (E88)135i
Power
407 hp
304 kW
306 hp
228 kW
Torque
600 Nm
443 lb-ft
400 Nm
295 lb-ft
Acceleration
4.9 s
5.5 s
Top speed
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
Lightness
1,985 kg
4,376 lb
1,600 kg
3,527 lb
Fuel consumption
11.5 L/100 km
20.5 mpg US
24.6 mpg UK
8.6 L/100 km
27.4 mpg US
32.8 mpg UK
Practicality
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
Doors/seats
2 doors
4 seats
Trunk
260 L
9.2 cu ft
Length
4,360 mm
171.7 in
Height
1,411 mm
55.6 in
Range score
609 km
378 mi
616 km
383 mi
CO2 score
267 g/km
-
Trunk score
300 L
10.6 cu ft
260 L
9.2 cu ft
Power-to-weight score
205 hp/t
153 kW/t
4.9 kg/hp
191 hp/t
143 kW/t
5.2 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 (F12) 650iBMW 1 Series Convertible (E88) 135i
Consumption11.5 L/100 km20.5 mpg US24.6 mpg UK8.6 L/100 km27.4 mpg US32.8 mpg UK
Cost / 100 km20.13 LC100 km15.05 LC100 km
Cost / 100 mi32.39 LC100 mi24.22 LC100 mi
Annual fuel used1,725 L456 US gal379 UK gal1,290 L341 US gal284 UK gal
Annual fuel cost3,019 LC/year2,258 LC/year

Head-to-head comparisons

BMW 6 Series Convertible (F12) 650i

  • Has 101 hp more
  • Has 200 Nm more
  • Is 0.6 s quicker from 0-100 km/h
  • Has 14 hp/t better power-to-weight
  • Has 40 L more trunk volume

Pros

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

Cons

  • Highest combined fuel consumption
  • Heaviest

BMW 1 Series Convertible (E88) 135i

  • Is 385 kg lighter
  • Uses 2.9 L/100 km less fuel
  • Has 8 km (5 mi) more estimated range

Pros

  • Lightest
  • Lowest combined fuel consumption
  • Best estimated range

Cons

  • Slowest 0-100 km/h
  • Lowest power
  • Smallest trunk

Choose cars to compare

Brand
Model
Generation
Engine or modification
BMW 6 Series Convertible (F12) 650i
BMW 1 Series Convertible (E88) 135i
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