Car comparison

BMW 6 Series Gran Turismo (G32) 640ivsBMW X6 (G06) 40i

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 X6 (G06)

40i

340 hp2998 ccGasolineAWDAutomaticTurbocharged2019-2020

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
  • Lightest
    1,835 kg
    4,045 lb
  • Best power-to-weight
    185 hp/t
    138 kW/t
    5.4 kg/hp
  • Lowest combined fuel consumption
    8.2 L/100 km
    28.7 mpg US
    34.4 mpg UK
  • Lowest highway consumption
    6.5 L/100 km
    36.2 mpg US
    43.5 mpg UK
  • Lowest CO2 emissions
    187 g/km
  • Largest trunk
    610 L
  • Best overall score
    72/100
  • Best performance score
    68/100
  • Best economy score
    85/100
  • Best practicality score
    79/100

BMW X6 (G06) 40i

  • Lowest city consumption
    10.1 L/100 km
    23.3 mpg US
    28.0 mpg UK
  • Best estimated range
    965 km
    600 mi

Specification comparison

Specification comparison
ModelBMW6 Series Gran Turismo (G32)640iBMWX6 (G06)40i
Power
340hp254kW
340hp254kW
Torque
450Nm332lb-ft
450Nm332lb-ft
Curb weight
1,835kg4,045lb
2,235kg4,927lb
Gross weight
2,515kg5,545lb
2,975kg6,559lb
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
71.6s99% target: 257 km/h / 160 mph
Calculated
103.3s99% target: 257 km/h / 160 mph
Calculated
0-100 km/h
5.3s
5.5s
0-200 km/h
19.1s
Calculated
23.2s
Calculated
0-60 mph
5.0s
Calculated
5.2s
Calculated
Fuel consumption
8.2L/100 km28.7mpg US34.4mpg UK
8.6L/100 km27.4mpg US32.8mpg UK
Fuel consumption city
11.1L/100 km21.2mpg US25.4mpg UK
10.1L/100 km23.3mpg US28.0mpg 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
13.8s
Calculated
Power-to-weight
185hp/t138kW/t84hp/1000 lb
Calculated
152hp/t113kW/t69hp/1000 lb
Calculated
Torque-to-weight
245Nm/t164lb-ft/ton
Calculated
201Nm/t135lb-ft/ton
Calculated
Estimated range
829km515mi
Calculated
965km600mi
Calculated
Displacement
2,998cc183cu in
2,998cc183cu in
Length
5,091mm200in
4,935mm194in
Width
1,902mm75in
2,004mm79in
Height
1,540mm61in
1,696mm67in
Wheelbase
3,070mm121in
2,975mm117in
Front track
1,615mm64in
1,678mm66in
Rear track
1,647mm65in
1,698mm67in
Ground clearance
138mm5in
216mm9in
Trunk volume
610L
580L
Max trunk volume
1,800L
1,530L
Doors
5
5
Seats
5
5
Fuel tank
68L
83L
CO2 emissions
187g/km
197g/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 X6 (G06) 40iPowerTorque
  • BMW 6 Series Gran Turismo (G32) 640i: Power / Torque
  • BMW X6 (G06) 40i: 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
BMWX6 (G06)40i5,500-6,500 rpm1,500-5,200 rpm6,750 rpm

Acceleration curve

Estimated speed over time for selected vehicles.

Acceleration and drag-race table
MetricBMW6 Series Gran Turismo (G32)640iBMWX6 (G06)40i
Acceleration checkpoints
0-60 mph
0-97 km/h
5.0 s
5.2 s
0-100 km/h
0-62 mph
5.3 s
5.5 s
0-200 km/h
0-124 mph
19.1 s
23.2 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
Likely limited
Drag race simulation
60 ft
18 m
2.2 s
2.1 s
330 ft
101 m
5.8 s
5.8 s
1/8 mile
201 m
8.8 s
8.9 s
1000 ft
305 m
11.3 s
11.5 s
1/4 mile
402 m
13.4 s
13.8 s
Trap speed
1/4 mile
402 m
172 km/h
107 mph
162 km/h
101 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
BMWX6 (G06)40i
340 hp
254 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
BMWX6 (G06)40i
450 Nm
332 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
BMWX6 (G06)40i
2,235 kg
4,927 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
BMWX6 (G06)40i
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 Gran Turismo (G32)640i5.3 s
BMWX6 (G06)40i5.5 s

The biggest 0-100 km/h difference is between BMW 6 Series Gran Turismo (G32) 640i and BMW X6 (G06) 40i: 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 Gran Turismo (G32)640i
8.2 L/100 km
28.7 mpg US
34.4 mpg UK
BMWX6 (G06)40i
8.6 L/100 km
27.4 mpg US
32.8 mpg UK

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
BMWX6 (G06)40i
152 hp/t
113 kW/t
6.6 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
BMWX6 (G06)40i
965 km
600 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
BMWX6 (G06)40i
340 hp
254 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 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
BMWX6 (G06)40i
Power
340 hp
254 kW
0-100 km/h5.5 s
Top speed
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
Doors/seats
5 doors
5 seats
Trunk
580 L
20.5 cu ft
Length
4,935 mm
194.3 in
Height
1,696 mm
66.8 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
BMWX6 (G06)40i
Power
340 hp
254 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 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
BMWX6 (G06)40i
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 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
BMWX6 (G06)40i
152 hp/t
113 kW/t
6.6 kg/hp
8.6 L/100 km
27.4 mpg US
32.8 mpg UK

Detailed score breakdown

Detailed score breakdown
VehicleBMW6 Series Gran Turismo (G32)640iBMWX6 (G06)40i
Power
340 hp
254 kW
340 hp
254 kW
Torque
450 Nm
332 lb-ft
450 Nm
332 lb-ft
Acceleration
5.3 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
1,835 kg
4,045 lb
2,235 kg
4,927 lb
Fuel consumption
8.2 L/100 km
28.7 mpg US
34.4 mpg UK
8.6 L/100 km
27.4 mpg US
32.8 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
5 doors
5 seats
Trunk
580 L
20.5 cu ft
Length
4,935 mm
194.3 in
Height
1,696 mm
66.8 in
Range score
829 km
515 mi
965 km
600 mi
CO2 score
187 g/km
197 g/km
Trunk score
610 L
21.5 cu ft
580 L
20.5 cu ft
Power-to-weight score
185 hp/t
138 kW/t
5.4 kg/hp
152 hp/t
113 kW/t
6.6 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 X6 (G06) 40i
Consumption8.2 L/100 km28.7 mpg US34.4 mpg UK8.6 L/100 km27.4 mpg US32.8 mpg UK
Cost / 100 km14.35 LC100 km15.05 LC100 km
Cost / 100 mi23.09 LC100 mi24.22 LC100 mi
Annual fuel used1,230 L325 US gal271 UK gal1,290 L341 US gal284 UK gal
Annual fuel cost2,153 LC/year2,258 LC/year

Head-to-head comparisons

BMW 6 Series Gran Turismo (G32) 640i

  • Is 400 kg lighter
  • Is 0.2 s quicker from 0-100 km/h
  • Uses 0.4 L/100 km less fuel
  • Has 33 hp/t better power-to-weight
  • Has 30 L more trunk volume
  • Emits 10 g/km less CO2

Pros

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

BMW X6 (G06) 40i

  • Has 136 km (84 mi) more estimated range

Pros

  • Best estimated range

Cons

  • Slowest 0-100 km/h
  • Highest combined fuel consumption
  • Heaviest
  • Smallest trunk
  • Highest CO2 emissions

Choose cars to compare

Brand
Model
Generation
Engine or modification
BMW 6 Series Gran Turismo (G32) 640i
BMW X6 (G06) 40i
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