Car comparison

BMW 6 Series Convertible (E64) · Facelift 2007 630ivsBMW 6 Series (E24) · Facelift 1987 M 635CSi

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

New comparison

BMW 6 Series Convertible (E64) · Facelift 2007

630i

272 hp2996 ccGasolineRWDManualNaturally aspiratedCabriolet / convertible2007-2010
VS

BMW 6 Series (E24) · Facelift 1987

M 635CSi

260 hp3453 ccGasolineRWDManualNaturally aspiratedCoupe1987-1989

Comparison overview

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

Best choices

BMW 6 Series Convertible (E64) Facelift 2007 630i

  • Quickest 0-100 km/h
    6.7 s
  • Fastest top speed
    260 km/h
    162 mph Unrestricted
    250 km/h
    155 mph Restricted
  • Most powerful
    272 hp
    203 kW
  • Lowest combined fuel consumption
    8.3 L/100 km
    28.3 mpg US
    34.0 mpg UK
  • Lowest city consumption
    11.8 L/100 km
    19.9 mpg US
    23.9 mpg UK
  • Lowest highway consumption
    6.3 L/100 km
    37.3 mpg US
    44.8 mpg UK
  • Best estimated range
    843 km
    524 mi
  • Best overall score
    54/100
  • Best performance score
    58/100
  • Best economy score
    85/100

Specification comparison

Specification comparison
ModelBMW6 Series Convertible (E64)Facelift 2007630iBMW6 Series (E24)Facelift 1987M 635CSi
Power
272hp203kW
260hp194kW
Torque
320Nm236lb-ft
330Nm243lb-ft
Curb weight
1,740kg3,836lb
1,515kg3,340lb
Gross weight
2,140kg4,718lb
1,865kg4,112lb
Top speed
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
Calculated
242 km/h
150 mph
To 99% top speed
98.6s99% target: 257 km/h / 160 mph
Calculated
92.7s99% target: 240 km/h / 149 mph
Calculated
0-100 km/h
6.7s
6.9s
0-200 km/h
25.1s
Calculated
28.9s
Calculated
0-60 mph
6.4s
Calculated
6.5s
Calculated
Fuel consumption
8.3L/100 km28.3mpg US34.0mpg UK
11.9L/100 km19.8mpg US23.7mpg UK
Fuel consumption city
11.8L/100 km19.9mpg US23.9mpg UK
17.6L/100 km13.4mpg US16.1mpg UK
Fuel consumption highway
6.3L/100 km37.3mpg US44.8mpg UK
8.1L/100 km29mpg US34.9mpg UK
Quarter mile
14.7s
Calculated
14.9s
Calculated
Power-to-weight
156hp/t117kW/t71hp/1000 lb
Calculated
172hp/t128kW/t78hp/1000 lb
Calculated
Torque-to-weight
184Nm/t123lb-ft/ton
Calculated
218Nm/t146lb-ft/ton
Calculated
Estimated range
843km524mi
Calculated
588km366mi
Calculated
Displacement
2,996cc183cu in
3,453cc211cu in
Length
4,820mm190in
4,815mm190in
Width
1,855mm73in
1,725mm68in
Height
1,373mm54in
1,355mm53in
Wheelbase
2,780mm109in
2,625mm103in
Front track
1,558mm61in
1,430mm56in
Rear track
1,596mm63in
1,464mm58in
Trunk volume
300L
335L
Max trunk volume
350L
-
Doors
2
2
Seats
4
4
Fuel tank
70L
70L

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 630iBMW 6 Series (E24) Facelift 1987 M 635CSiPowerTorque
  • BMW 6 Series Convertible (E64) Facelift 2007 630i: Power / Torque
  • BMW 6 Series (E24) Facelift 1987 M 635CSi: Power / Torque
Dyno simulation data table
VehiclePeak power RPMPeak torque RPMMax engine speed
BMW6 Series Convertible (E64)Facelift 2007630i6,700 rpm2,750-3,000 rpm6,950 rpm
BMW6 Series (E24)Facelift 1987M 635CSi6,500 rpm4,500 rpm6,750 rpm

Acceleration curve

Estimated speed over time for selected vehicles.

Acceleration and drag-race table
MetricBMW6 Series Convertible (E64)Facelift 2007630iBMW6 Series (E24)Facelift 1987M 635CSi
Acceleration checkpoints
0-60 mph
0-97 km/h
6.4 s
6.5 s
0-100 km/h
0-62 mph
6.7 s
6.9 s
0-200 km/h
0-124 mph
25.1 s
28.9 s
Top speed
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
Limited
242 km/h
150 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
12.4 s
12.5 s
1/4 mile
402 m
14.7 s
14.9 s
Trap speed
1/4 mile
402 m
158 km/h
98 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 2007630i
272 hp
203 kW
BMW6 Series (E24)Facelift 1987M 635CSi
260 hp
194 kW

BMW 6 Series Convertible (E64) Facelift 2007 630i has 12 hp more than BMW 6 Series (E24) Facelift 1987 M 635CSi.

The biggest power difference is between BMW 6 Series (E24) Facelift 1987 M 635CSi and BMW 6 Series Convertible (E64) Facelift 2007 630i: 12 hp (9 kW).

Torque comparison

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

Chart data table
VehicleValue
BMW6 Series Convertible (E64)Facelift 2007630i
320 Nm
236 lb-ft
BMW6 Series (E24)Facelift 1987M 635CSi
330 Nm
243 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 2007630i
1,740 kg
3,836 lb
BMW6 Series (E24)Facelift 1987M 635CSi
1,515 kg
3,340 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 2007630i
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
BMW6 Series (E24)Facelift 1987M 635CSi
242 km/h
150 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 2007630i6.7 s
BMW6 Series (E24)Facelift 1987M 635CSi6.9 s

The biggest 0-100 km/h difference is between BMW 6 Series Convertible (E64) Facelift 2007 630i and BMW 6 Series (E24) Facelift 1987 M 635CSi: 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 2007630i
8.3 L/100 km
28.3 mpg US
34.0 mpg UK
BMW6 Series (E24)Facelift 1987M 635CSi
11.9 L/100 km
19.8 mpg US
23.7 mpg UK

The biggest fuel consumption difference is between BMW 6 Series Convertible (E64) Facelift 2007 630i and BMW 6 Series (E24) Facelift 1987 M 635CSi: 3.6 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 Convertible (E64)Facelift 2007630i
156 hp/t
117 kW/t
6.4 kg/hp
BMW6 Series (E24)Facelift 1987M 635CSi
172 hp/t
128 kW/t
5.8 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 2007630i
843 km
524 mi
BMW6 Series (E24)Facelift 1987M 635CSi
588 km
366 mi

Performance spider chart

Radar chart comparing normalized performance and fuel-consumption scores.

Chart data table
VehiclePowerAccelerationTop speed
BMW6 Series Convertible (E64)Facelift 2007630i
272 hp
203 kW
6.7 s
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
BMW6 Series (E24)Facelift 1987M 635CSi
260 hp
194 kW
6.9 s
242 km/h
150 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 2007630i
Power
272 hp
203 kW
0-100 km/h6.7 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
4,820 mm
189.8 in
Height
1,373 mm
54.1 in
BMW6 Series (E24)Facelift 1987M 635CSi
Power
260 hp
194 kW
0-100 km/h6.9 s
Top speed
242 km/h
150 mph
Doors/seats
2 doors
4 seats
Trunk
335 L
11.8 cu ft
Length
4,815 mm
189.6 in
Height
1,355 mm
53.3 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 2007630i
Power
272 hp
203 kW
0-100 km/h6.7 s
Top speed
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
8.3 L/100 km
28.3 mpg US
34.0 mpg UK
BMW6 Series (E24)Facelift 1987M 635CSi
Power
260 hp
194 kW
0-100 km/h6.9 s
Top speed
242 km/h
150 mph
11.9 L/100 km
19.8 mpg US
23.7 mpg UK

BMW 6 Series Convertible (E64) Facelift 2007 630i 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 2007630i
8.3 L/100 km
28.3 mpg US
34.0 mpg UK
6.7 s
BMW6 Series (E24)Facelift 1987M 635CSi
11.9 L/100 km
19.8 mpg US
23.7 mpg UK
6.9 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 2007630i
156 hp/t
117 kW/t
6.4 kg/hp
8.3 L/100 km
28.3 mpg US
34.0 mpg UK
BMW6 Series (E24)Facelift 1987M 635CSi
172 hp/t
128 kW/t
5.8 kg/hp
11.9 L/100 km
19.8 mpg US
23.7 mpg UK

Detailed score breakdown

Detailed score breakdown
VehicleBMW6 Series Convertible (E64)Facelift 2007630iBMW6 Series (E24)Facelift 1987M 635CSi
Power
272 hp
203 kW
260 hp
194 kW
Torque
320 Nm
236 lb-ft
330 Nm
243 lb-ft
Acceleration
6.7 s
6.9 s
Top speed
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
242 km/h
150 mph
Lightness
1,740 kg
3,836 lb
1,515 kg
3,340 lb
Fuel consumption
8.3 L/100 km
28.3 mpg US
34.0 mpg UK
11.9 L/100 km
19.8 mpg US
23.7 mpg UK
Practicality
Doors/seats
2 doors
4 seats
Trunk
300 L
10.6 cu ft
Length
4,820 mm
189.8 in
Height
1,373 mm
54.1 in
Doors/seats
2 doors
4 seats
Trunk
335 L
11.8 cu ft
Length
4,815 mm
189.6 in
Height
1,355 mm
53.3 in
Range score
843 km
524 mi
588 km
366 mi
Trunk score
300 L
10.6 cu ft
335 L
11.8 cu ft
Power-to-weight score
156 hp/t
117 kW/t
6.4 kg/hp
172 hp/t
128 kW/t
5.8 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 Convertible (E64) Facelift 2007 630iBMW 6 Series (E24) Facelift 1987 M 635CSi
Consumption8.3 L/100 km28.3 mpg US34 mpg UK11.9 L/100 km19.8 mpg US23.7 mpg UK
Cost / 100 km14.53 LC100 km20.83 LC100 km
Cost / 100 mi23.38 LC100 mi33.51 LC100 mi
Annual fuel used1,245 L329 US gal274 UK gal1,785 L472 US gal393 UK gal
Annual fuel cost2,179 LC/year3,124 LC/year

Head-to-head comparisons

BMW 6 Series Convertible (E64) Facelift 2007 630i

  • Has 12 hp more
  • Is 0.2 s quicker from 0-100 km/h
  • Has 18 km/h (11 mph) higher top speed
  • Uses 3.6 L/100 km less fuel
  • Has 255 km (159 mi) more estimated range

Pros

  • Quickest 0-100 km/h in this comparison
  • Highest top speed
  • Most powerful
  • Lowest combined fuel consumption
  • Best estimated range

Cons

  • Heaviest
  • Smallest trunk

BMW 6 Series (E24) Facelift 1987 M 635CSi

  • Has 10 Nm more
  • Is 225 kg lighter
  • Has 15 hp/t better power-to-weight
  • Has 35 L more trunk volume

Pros

  • Highest torque
  • Lightest
  • Best power-to-weight ratio
  • Largest trunk

Cons

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

Choose cars to compare

Brand
Model
Generation
Engine or modification
BMW 6 Series Convertible (E64) 630i
BMW 6 Series (E24) M 635CSi
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2 vehicles selected

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BMW 6 Series Convertible (E64) · Facelift 2007 630i vs BMW 6 Series (E24) · Facelift 1987 M 635CSi - car comparison - FastVsFaster