Car comparison

BMW 6 Series Convertible (E64) · Facelift 2007 635dvsBMW 1 Series Convertible (E88) 125i

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

New comparison

BMW 6 Series Convertible (E64) · Facelift 2007

635d

286 hp2993 ccDieselRWDAutomaticTurbochargedCabriolet / convertible2007-2010
VS

BMW 1 Series Convertible (E88)

125i

218 hp2996 ccGasolineRWDManualNaturally aspiratedCabriolet / convertible2008-2011

Comparison overview

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

Best choices

BMW 6 Series Convertible (E64) Facelift 2007 635d

  • Quickest 0-100 km/h
    6.6 s
  • Fastest top speed
    260 km/h
    162 mph Unrestricted
    250 km/h
    155 mph Restricted
  • Most powerful
    286 hp
    213 kW
  • Highest torque
    580 Nm
    428 lb-ft
  • Best power-to-weight
    154 hp/t
    115 kW/t
    6.5 kg/hp
  • Lowest combined fuel consumption
    7.2 L/100 km
    32.7 mpg US
    39.2 mpg UK
  • Lowest city consumption
    9.6 L/100 km
    24.5 mpg US
    29.4 mpg UK
  • Lowest highway consumption
    5.8 L/100 km
    40.6 mpg US
    48.7 mpg UK
  • Lowest CO2 emissions
    190 g/km
  • Best estimated range
    972 km
    604 mi
  • Largest trunk
    450 L
  • Best overall score
    60/100
  • Best performance score
    64/100
  • Best economy score
    87/100
  • Best practicality score
    51/100

Specification comparison

Specification comparison
ModelBMW6 Series Convertible (E64)Facelift 2007635dBMW1 Series Convertible (E88)125i
Power
286hp213kW
218hp163kW
Torque
580Nm428lb-ft
270Nm199lb-ft
Curb weight
1,860kg4,101lb
1,510kg3,329lb
Gross weight
2,260kg4,982lb
1,950kg4,299lb
Top speed
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
Calculated
238 km/h
148 mph
To 99% top speed
97.2s99% target: 257 km/h / 160 mph
Calculated
88.3s99% target: 236 km/h / 146 mph
Calculated
0-100 km/h
6.6s
6.8s
0-200 km/h
24.8s
Calculated
29.2s
Calculated
0-60 mph
6.3s
Calculated
6.4s
Calculated
Fuel consumption
7.2L/100 km32.7mpg US39.2mpg UK
8.1L/100 km29mpg US34.9mpg UK
Fuel consumption city
9.6L/100 km24.5mpg US29.4mpg UK
11.7L/100 km20.1mpg US24.1mpg UK
Fuel consumption highway
5.8L/100 km40.6mpg US48.7mpg UK
6L/100 km39.2mpg US47.1mpg UK
Quarter mile
14.6s
Calculated
14.8s
Calculated
Power-to-weight
154hp/t115kW/t70hp/1000 lb
Calculated
144hp/t108kW/t65hp/1000 lb
Calculated
Torque-to-weight
312Nm/t209lb-ft/ton
Calculated
179Nm/t120lb-ft/ton
Calculated
Estimated range
972km604mi
Calculated
654km407mi
Calculated
Displacement
2,993cc183cu in
2,996cc183cu in
Length
4,820mm190in
4,360mm172in
Width
1,855mm73in
1,748mm69in
Height
1,374mm54in
1,411mm56in
Wheelbase
2,780mm109in
2,660mm105in
Front track
1,558mm61in
1,474mm58in
Rear track
1,596mm63in
1,507mm59in
Ground clearance-
140mm6in
Trunk volume
450L
260L
Max trunk volume-
305L
Doors
2
2
Seats
4
4
Fuel tank
70L
53L
CO2 emissions
190g/km
195g/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 (E64) Facelift 2007 635dBMW 1 Series Convertible (E88) 125iPowerTorque
  • BMW 6 Series Convertible (E64) Facelift 2007 635d: Power / Torque
  • BMW 1 Series Convertible (E88) 125i: Power / Torque
Dyno simulation data table
VehiclePeak power RPMPeak torque RPMMax engine speed
BMW6 Series Convertible (E64)Facelift 2007635d4,400 rpm1,750-2,250 rpm4,650 rpm
BMW1 Series Convertible (E88)125i6,100 rpm2,500-4,250 rpm6,350 rpm

Acceleration curve

Estimated speed over time for selected vehicles.

Acceleration and drag-race table
MetricBMW6 Series Convertible (E64)Facelift 2007635dBMW1 Series Convertible (E88)125i
Acceleration checkpoints
0-60 mph
0-97 km/h
6.3 s
6.4 s
0-100 km/h
0-62 mph
6.6 s
6.8 s
0-200 km/h
0-124 mph
24.8 s
29.2 s
Top speed
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
Likely limited
238 km/h
148 mph
Drag race simulation
60 ft
18 m
2.4 s
2.4 s
330 ft
101 m
6.4 s
6.4 s
1/8 mile
201 m
9.6 s
9.7 s
1000 ft
305 m
12.3 s
12.5 s
1/4 mile
402 m
14.6 s
14.8 s
Trap speed
1/4 mile
402 m
159 km/h
99 mph
154 km/h
96 mph

Power comparison

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

Chart data table
VehicleValue
BMW6 Series Convertible (E64)Facelift 2007635d
286 hp
213 kW
BMW1 Series Convertible (E88)125i
218 hp
163 kW

BMW 6 Series Convertible (E64) Facelift 2007 635d has 68 hp more than BMW 1 Series Convertible (E88) 125i.

The biggest power difference is between BMW 1 Series Convertible (E88) 125i and BMW 6 Series Convertible (E64) Facelift 2007 635d: 68 hp (51 kW).

Torque comparison

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

Chart data table
VehicleValue
BMW6 Series Convertible (E64)Facelift 2007635d
580 Nm
428 lb-ft
BMW1 Series Convertible (E88)125i
270 Nm
199 lb-ft

Curb weight comparison

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

Chart data table
VehicleValue
BMW6 Series Convertible (E64)Facelift 2007635d
1,860 kg
4,101 lb
BMW1 Series Convertible (E88)125i
1,510 kg
3,329 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)Facelift 2007635d
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
BMW1 Series Convertible (E88)125i
238 km/h
148 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)Facelift 2007635d6.6 s
BMW1 Series Convertible (E88)125i6.8 s

The biggest 0-100 km/h difference is between BMW 6 Series Convertible (E64) Facelift 2007 635d and BMW 1 Series Convertible (E88) 125i: 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 Convertible (E64)Facelift 2007635d
7.2 L/100 km
32.7 mpg US
39.2 mpg UK
BMW1 Series Convertible (E88)125i
8.1 L/100 km
29.0 mpg US
34.9 mpg UK

The biggest fuel consumption difference is between BMW 6 Series Convertible (E64) Facelift 2007 635d and BMW 1 Series Convertible (E88) 125i: 0.9 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 (E64)Facelift 2007635d
154 hp/t
115 kW/t
6.5 kg/hp
BMW1 Series Convertible (E88)125i
144 hp/t
108 kW/t
6.9 kg/hp

Estimated range comparison

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

Chart data table
VehicleValue
BMW6 Series Convertible (E64)Facelift 2007635d
972 km
604 mi
BMW1 Series Convertible (E88)125i
654 km
407 mi

Performance spider chart

Radar chart comparing normalized performance and fuel-consumption scores.

Chart data table
VehiclePowerAccelerationTop speed
BMW6 Series Convertible (E64)Facelift 2007635d
286 hp
213 kW
6.6 s
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
BMW1 Series Convertible (E88)125i
218 hp
163 kW
6.8 s
238 km/h
148 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)Facelift 2007635d
Power
286 hp
213 kW
0-100 km/h6.6 s
Top speed
Unrestricted
260 km/h162 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
1,374 mm
54.1 in
BMW1 Series Convertible (E88)125i
Power
218 hp
163 kW
0-100 km/h6.8 s
Top speed
238 km/h
148 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 (E64)Facelift 2007635d
Power
286 hp
213 kW
0-100 km/h6.6 s
Top speed
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
7.2 L/100 km
32.7 mpg US
39.2 mpg UK
BMW1 Series Convertible (E88)125i
Power
218 hp
163 kW
0-100 km/h6.8 s
Top speed
238 km/h
148 mph
8.1 L/100 km
29.0 mpg US
34.9 mpg UK

BMW 6 Series Convertible (E64) Facelift 2007 635d 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 (E64)Facelift 2007635d
7.2 L/100 km
32.7 mpg US
39.2 mpg UK
6.6 s
BMW1 Series Convertible (E88)125i
8.1 L/100 km
29.0 mpg US
34.9 mpg UK
6.8 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 (E64)Facelift 2007635d
154 hp/t
115 kW/t
6.5 kg/hp
7.2 L/100 km
32.7 mpg US
39.2 mpg UK
BMW1 Series Convertible (E88)125i
144 hp/t
108 kW/t
6.9 kg/hp
8.1 L/100 km
29.0 mpg US
34.9 mpg UK

Detailed score breakdown

Detailed score breakdown
VehicleBMW6 Series Convertible (E64)Facelift 2007635dBMW1 Series Convertible (E88)125i
Power
286 hp
213 kW
218 hp
163 kW
Torque
580 Nm
428 lb-ft
270 Nm
199 lb-ft
Acceleration
6.6 s
6.8 s
Top speed
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
238 km/h
148 mph
Lightness
1,860 kg
4,101 lb
1,510 kg
3,329 lb
Fuel consumption
7.2 L/100 km
32.7 mpg US
39.2 mpg UK
8.1 L/100 km
29.0 mpg US
34.9 mpg UK
Practicality
Doors/seats
2 doors
4 seats
Trunk
450 L
15.9 cu ft
Length
4,820 mm
189.8 in
Height
1,374 mm
54.1 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
972 km
604 mi
654 km
407 mi
CO2 score
190 g/km
195 g/km
Trunk score
450 L
15.9 cu ft
260 L
9.2 cu ft
Power-to-weight score
154 hp/t
115 kW/t
6.5 kg/hp
144 hp/t
108 kW/t
6.9 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) Facelift 2007 635dBMW 1 Series Convertible (E88) 125i
Consumption7.2 L/100 km32.7 mpg US39.2 mpg UK8.1 L/100 km29 mpg US34.9 mpg UK
Cost / 100 km12.60 LC100 km14.17 LC100 km
Cost / 100 mi20.28 LC100 mi22.81 LC100 mi
Annual fuel used1,080 L285 US gal238 UK gal1,215 L321 US gal267 UK gal
Annual fuel cost1,890 LC/year2,126 LC/year

Head-to-head comparisons

BMW 6 Series Convertible (E64) Facelift 2007 635d

  • Has 68 hp more
  • Has 310 Nm more
  • Is 0.2 s quicker from 0-100 km/h
  • Has 22 km/h (14 mph) higher top speed
  • Uses 0.9 L/100 km less fuel
  • Has 9 hp/t better power-to-weight
  • Has 318 km (198 mi) more estimated range
  • Has 190 L more trunk volume
  • Emits 5 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 1 Series Convertible (E88) 125i

  • Is 350 kg lighter

Pros

  • Lightest

Cons

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

Choose cars to compare

Brand
Model
Generation
Engine or modification
BMW 6 Series Convertible (E64) 635d
BMW 1 Series Convertible (E88) 125i
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2 vehicles selected

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