Car comparison

BMW 6 Series Gran Turismo (G32) 640ivsBMW 6 Series (E24) · Facelift 1982 M 635CSi

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

New comparison

BMW 6 Series Gran Turismo (G32)

640i

340 hp2998 ccGasolineAWDAutomaticTurbocharged2017-2020
VS

BMW 6 Series (E24) · Facelift 1982

M 635CSi

286 hp3453 ccGasolineRWDManualNaturally aspiratedCoupe1984-1987

Comparison overview

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

Best choices

BMW 6 Series Gran Turismo (G32) 640i

  • Quickest 0-100 km/h
    5.3 s
  • Fastest top speed
    260 km/h
    162 mph Unrestricted
    250 km/h
    155 mph Restricted
  • Most powerful
    340 hp
    254 kW
  • Highest torque
    450 Nm
    332 lb-ft
  • Lowest combined fuel consumption
    8.2 L/100 km
    28.7 mpg US
    34.4 mpg UK
  • Lowest city consumption
    11.1 L/100 km
    21.2 mpg US
    25.4 mpg UK
  • Lowest highway consumption
    6.5 L/100 km
    36.2 mpg US
    43.5 mpg UK
  • Best estimated range
    829 km
    515 mi
  • Largest trunk
    610 L
  • Best overall score
    72/100
  • Best performance score
    68/100
  • Best economy score
    85/100
  • Best practicality score
    79/100

Specification comparison

Specification comparison
ModelBMW6 Series Gran Turismo (G32)640iBMW6 Series (E24)Facelift 1982M 635CSi
Power
340hp254kW
286hp213kW
Torque
450Nm332lb-ft
340Nm251lb-ft
Curb weight
1,835kg4,045lb
1,500kg3,307lb
Gross weight
2,515kg5,545lb
1,850kg4,079lb
Top speed
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
Calculated
255 km/h
158 mph
To 99% top speed
71.6s99% target: 257 km/h / 160 mph
Calculated
91.2s99% target: 252 km/h / 157 mph
Calculated
0-100 km/h
5.3s
6.4s
0-200 km/h
19.1s
Calculated
24.6s
Calculated
0-60 mph
5.0s
Calculated
6.1s
Calculated
Fuel consumption
8.2L/100 km28.7mpg US34.4mpg UK
11.3L/100 km20.8mpg US25.0mpg UK
Fuel consumption city
11.1L/100 km21.2mpg US25.4mpg UK
16.5L/100 km14.3mpg US17.1mpg UK
Fuel consumption highway
6.5L/100 km36.2mpg US43.5mpg UK
7.8L/100 km30.2mpg US36.2mpg UK
Quarter mile
13.4s
Calculated
14.5s
Calculated
Power-to-weight
185hp/t138kW/t84hp/1000 lb
Calculated
191hp/t142kW/t86hp/1000 lb
Calculated
Torque-to-weight
245Nm/t164lb-ft/ton
Calculated
227Nm/t152lb-ft/ton
Calculated
Estimated range
829km515mi
Calculated
619km385mi
Calculated
Displacement
2,998cc183cu in
3,453cc211cu in
Length
5,091mm200in
4,755mm187in
Width
1,902mm75in
1,725mm68in
Height
1,540mm61in
1,355mm53in
Wheelbase
3,070mm121in
2,625mm103in
Front track
1,615mm64in
1,430mm56in
Rear track
1,647mm65in
1,464mm58in
Ground clearance
138mm5in
-
Trunk volume
610L
335L
Max trunk volume
1,800L
-
Doors
5
2
Seats
5
4
Fuel tank
68L
70L
CO2 emissions
187g/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 Gran Turismo (G32) 640iBMW 6 Series (E24) Facelift 1982 M 635CSiPowerTorque
  • BMW 6 Series Gran Turismo (G32) 640i: Power / Torque
  • BMW 6 Series (E24) Facelift 1982 M 635CSi: Power / Torque
Dyno simulation data table
VehiclePeak power RPMPeak torque RPMMax engine speed
BMW6 Series Gran Turismo (G32)640i5,500-6,500 rpm1,380-5,200 rpm6,750 rpm
BMW6 Series (E24)Facelift 1982M 635CSi6,500 rpm4,500 rpm6,750 rpm

Acceleration curve

Estimated speed over time for selected vehicles.

Acceleration and drag-race table
MetricBMW6 Series Gran Turismo (G32)640iBMW6 Series (E24)Facelift 1982M 635CSi
Acceleration checkpoints
0-60 mph
0-97 km/h
5.0 s
6.1 s
0-100 km/h
0-62 mph
5.3 s
6.4 s
0-200 km/h
0-124 mph
19.1 s
24.6 s
Top speed
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
Likely limited
255 km/h
158 mph
Drag race simulation
60 ft
18 m
2.2 s
2.4 s
330 ft
101 m
5.8 s
6.3 s
1/8 mile
201 m
8.8 s
9.5 s
1000 ft
305 m
11.3 s
12.2 s
1/4 mile
402 m
13.4 s
14.5 s
Trap speed
1/4 mile
402 m
172 km/h
107 mph
160 km/h
99 mph

Power comparison

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

Chart data table
VehicleValue
BMW6 Series Gran Turismo (G32)640i
340 hp
254 kW
BMW6 Series (E24)Facelift 1982M 635CSi
286 hp
213 kW

BMW 6 Series Gran Turismo (G32) 640i has 54 hp more than BMW 6 Series (E24) Facelift 1982 M 635CSi.

The biggest power difference is between BMW 6 Series (E24) Facelift 1982 M 635CSi and BMW 6 Series Gran Turismo (G32) 640i: 54 hp (40 kW).

Torque comparison

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

Chart data table
VehicleValue
BMW6 Series Gran Turismo (G32)640i
450 Nm
332 lb-ft
BMW6 Series (E24)Facelift 1982M 635CSi
340 Nm
251 lb-ft

Curb weight comparison

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

Chart data table
VehicleValue
BMW6 Series Gran Turismo (G32)640i
1,835 kg
4,045 lb
BMW6 Series (E24)Facelift 1982M 635CSi
1,500 kg
3,307 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 Gran Turismo (G32)640i
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
BMW6 Series (E24)Facelift 1982M 635CSi
255 km/h
158 mph

0-100 km/h comparison

Bar comparison chart for 0-100 km/h. Lower is better · seconds

Chart data table
VehicleValue
BMW6 Series Gran Turismo (G32)640i5.3 s
BMW6 Series (E24)Facelift 1982M 635CSi6.4 s

The biggest 0-100 km/h difference is between BMW 6 Series Gran Turismo (G32) 640i and BMW 6 Series (E24) Facelift 1982 M 635CSi: 1.1 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 Gran Turismo (G32)640i
8.2 L/100 km
28.7 mpg US
34.4 mpg UK
BMW6 Series (E24)Facelift 1982M 635CSi
11.3 L/100 km
20.8 mpg US
25.0 mpg UK

The biggest fuel consumption difference is between BMW 6 Series Gran Turismo (G32) 640i and BMW 6 Series (E24) Facelift 1982 M 635CSi: 3.1 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 Gran Turismo (G32)640i
185 hp/t
138 kW/t
5.4 kg/hp
BMW6 Series (E24)Facelift 1982M 635CSi
191 hp/t
142 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 Gran Turismo (G32)640i
829 km
515 mi
BMW6 Series (E24)Facelift 1982M 635CSi
619 km
385 mi

Performance spider chart

Radar chart comparing normalized performance and fuel-consumption scores.

Chart data table
VehiclePowerAccelerationTop speed
BMW6 Series Gran Turismo (G32)640i
340 hp
254 kW
5.3 s
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
BMW6 Series (E24)Facelift 1982M 635CSi
286 hp
213 kW
6.4 s
255 km/h
158 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 Gran Turismo (G32)640i
Power
340 hp
254 kW
0-100 km/h5.3 s
Top speed
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
Doors/seats
5 doors
5 seats
Trunk
610 L
21.5 cu ft
Length
5,091 mm
200.4 in
Height
1,540 mm
60.6 in
BMW6 Series (E24)Facelift 1982M 635CSi
Power
286 hp
213 kW
0-100 km/h6.4 s
Top speed
255 km/h
158 mph
Doors/seats
2 doors
4 seats
Trunk
335 L
11.8 cu ft
Length
4,755 mm
187.2 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 Gran Turismo (G32)640i
Power
340 hp
254 kW
0-100 km/h5.3 s
Top speed
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
8.2 L/100 km
28.7 mpg US
34.4 mpg UK
BMW6 Series (E24)Facelift 1982M 635CSi
Power
286 hp
213 kW
0-100 km/h6.4 s
Top speed
255 km/h
158 mph
11.3 L/100 km
20.8 mpg US
25.0 mpg UK

BMW 6 Series Gran Turismo (G32) 640i 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 Gran Turismo (G32)640i
8.2 L/100 km
28.7 mpg US
34.4 mpg UK
5.3 s
BMW6 Series (E24)Facelift 1982M 635CSi
11.3 L/100 km
20.8 mpg US
25.0 mpg UK
6.4 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 Gran Turismo (G32)640i
185 hp/t
138 kW/t
5.4 kg/hp
8.2 L/100 km
28.7 mpg US
34.4 mpg UK
BMW6 Series (E24)Facelift 1982M 635CSi
191 hp/t
142 kW/t
5.2 kg/hp
11.3 L/100 km
20.8 mpg US
25.0 mpg UK

Detailed score breakdown

Detailed score breakdown
VehicleBMW6 Series Gran Turismo (G32)640iBMW6 Series (E24)Facelift 1982M 635CSi
Power
340 hp
254 kW
286 hp
213 kW
Torque
450 Nm
332 lb-ft
340 Nm
251 lb-ft
Acceleration
5.3 s
6.4 s
Top speed
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
255 km/h
158 mph
Lightness
1,835 kg
4,045 lb
1,500 kg
3,307 lb
Fuel consumption
8.2 L/100 km
28.7 mpg US
34.4 mpg UK
11.3 L/100 km
20.8 mpg US
25.0 mpg UK
Practicality
Doors/seats
5 doors
5 seats
Trunk
610 L
21.5 cu ft
Length
5,091 mm
200.4 in
Height
1,540 mm
60.6 in
Doors/seats
2 doors
4 seats
Trunk
335 L
11.8 cu ft
Length
4,755 mm
187.2 in
Height
1,355 mm
53.3 in
Range score
829 km
515 mi
619 km
385 mi
CO2 score
187 g/km
-
Trunk score
610 L
21.5 cu ft
335 L
11.8 cu ft
Power-to-weight score
185 hp/t
138 kW/t
5.4 kg/hp
191 hp/t
142 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 Gran Turismo (G32) 640iBMW 6 Series (E24) Facelift 1982 M 635CSi
Consumption8.2 L/100 km28.7 mpg US34.4 mpg UK11.3 L/100 km20.8 mpg US25 mpg UK
Cost / 100 km14.35 LC100 km19.78 LC100 km
Cost / 100 mi23.09 LC100 mi31.82 LC100 mi
Annual fuel used1,230 L325 US gal271 UK gal1,695 L448 US gal373 UK gal
Annual fuel cost2,153 LC/year2,966 LC/year

Head-to-head comparisons

BMW 6 Series Gran Turismo (G32) 640i

  • Has 54 hp more
  • Has 110 Nm more
  • Is 1.1 s quicker from 0-100 km/h
  • Has 5 km/h (3 mph) higher top speed
  • Uses 3.1 L/100 km less fuel
  • Has 210 km (130 mi) more estimated range
  • Has 275 L more trunk volume

Pros

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

Cons

  • Heaviest

BMW 6 Series (E24) Facelift 1982 M 635CSi

  • Is 335 kg lighter
  • Has 5 hp/t better power-to-weight

Pros

  • Lightest
  • Best power-to-weight ratio

Cons

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

Choose cars to compare

Brand
Model
Generation
Engine or modification
BMW 6 Series Gran Turismo (G32) 640i
BMW 6 Series (E24) M 635CSi
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