Car comparison

BMW 6 Series Gran Turismo (G32) 640ivsBMW X3 (G01) M40i

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 ccGasolineRWDAutomaticTurbocharged2017-2020
VS

BMW X3 (G01)

M40i

360 hp2998 ccGasolineAWDAutomaticTurbocharged2017-2018

Comparison overview

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

Best choices

BMW 6 Series Gran Turismo (G32) 640i

  • Fastest top speed
    260 km/h
    162 mph Unrestricted
    250 km/h
    155 mph Restricted
  • Lightest
    1,770 kg
    3,902 lb
  • Lowest combined fuel consumption
    7.4 L/100 km
    31.8 mpg US
    38.2 mpg UK
  • Lowest city consumption
    9.8 L/100 km
    24.0 mpg US
    28.8 mpg UK
  • Lowest highway consumption
    6.0 L/100 km
    39.2 mpg US
    47.1 mpg UK
  • Lowest CO2 emissions
    169 g/km
  • Best estimated range
    919 km
    571 mi
  • Largest trunk
    610 L
  • Best overall score
    72/100
  • Best economy score
    87/100
  • Best practicality score
    79/100

BMW X3 (G01) M40i

  • Quickest 0-100 km/h
    4.8 s
  • Most powerful
    360 hp
    268 kW
  • Highest torque
    500 Nm
    369 lb-ft
  • Best power-to-weight
    199 hp/t
    148 kW/t
    5.0 kg/hp
  • Best performance score
    70/100

Specification comparison

Specification comparison
ModelBMW6 Series Gran Turismo (G32)640iBMWX3 (G01)M40i
Power
340hp254kW
360hp268kW
Torque
450Nm332lb-ft
500Nm369lb-ft
Curb weight
1,770kg3,902lb
1,810kg3,990lb
Gross weight
2,450kg5,401lb
2,455kg5,412lb
Top speed
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
Calculated
250 km/h
155 mph
To 99% top speed
70.6s99% target: 257 km/h / 160 mph
Calculated
69.0s99% target: 248 km/h / 154 mph
Calculated
0-100 km/h
5.4s
4.8s
0-200 km/h
19.1s
Calculated
19.3s
Calculated
0-60 mph
5.1s
Calculated
4.5s
Calculated
Fuel consumption
7.4L/100 km31.8mpg US38.2mpg UK
8.4L/100 km28mpg US33.6mpg UK
Fuel consumption city
9.8L/100 km24mpg US28.8mpg UK
11.1L/100 km21.2mpg US25.4mpg UK
Fuel consumption highway
6L/100 km39.2mpg US47.1mpg UK
7L/100 km33.6mpg US40.4mpg UK
Quarter mile
13.5s
Calculated
13.1s
Calculated
Power-to-weight
192hp/t143kW/t87hp/1000 lb
Calculated
199hp/t148kW/t90hp/1000 lb
Calculated
Torque-to-weight
254Nm/t170lb-ft/ton
Calculated
276Nm/t185lb-ft/ton
Calculated
Estimated range
919km571mi
Calculated
774km481mi
Calculated
Displacement
2,998cc183cu in
2,998cc183cu in
Length
5,091mm200in
4,716mm186in
Width
1,902mm75in
1,897mm75in
Height
1,538mm61in
1,676mm66in
Wheelbase
3,070mm121in
2,864mm113in
Front track
1,615mm64in
1,610mm63in
Rear track
1,649mm65in
1,594mm63in
Ground clearance
138mm5in
204mm8in
Trunk volume
610L
550L
Max trunk volume
1,800L
1,600L
Doors
5
5
Seats
5
5
Fuel tank
68L
65L
CO2 emissions
169g/km
193g/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 X3 (G01) M40iPowerTorque
  • BMW 6 Series Gran Turismo (G32) 640i: Power / Torque
  • BMW X3 (G01) M40i: 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
BMWX3 (G01)M40i5,500-6,500 rpm1,520-4,800 rpm6,750 rpm

Acceleration curve

Estimated speed over time for selected vehicles.

Acceleration and drag-race table
MetricBMW6 Series Gran Turismo (G32)640iBMWX3 (G01)M40i
Acceleration checkpoints
0-60 mph
0-97 km/h
5.1 s
4.5 s
0-100 km/h
0-62 mph
5.4 s
4.8 s
0-200 km/h
0-124 mph
19.1 s
19.3 s
Top speed
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
Likely limited
250 km/h
155 mph
Drag race simulation
60 ft
18 m
2.3 s
2.1 s
330 ft
101 m
5.9 s
5.6 s
1/8 mile
201 m
8.9 s
8.4 s
1000 ft
305 m
11.4 s
10.9 s
1/4 mile
402 m
13.5 s
13.1 s
Trap speed
1/4 mile
402 m
172 km/h
107 mph
172 km/h
107 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
BMWX3 (G01)M40i
360 hp
268 kW

BMW X3 (G01) M40i has 20 hp more than BMW 6 Series Gran Turismo (G32) 640i.

The biggest power difference is between BMW 6 Series Gran Turismo (G32) 640i and BMW X3 (G01) M40i: 20 hp (15 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
BMWX3 (G01)M40i
500 Nm
369 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
1,770 kg
3,902 lb
BMWX3 (G01)M40i
1,810 kg
3,990 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
BMWX3 (G01)M40i
250 km/h
155 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)640i5.4 s
BMWX3 (G01)M40i4.8 s

The biggest 0-100 km/h difference is between BMW X3 (G01) M40i and BMW 6 Series Gran Turismo (G32) 640i: 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 Gran Turismo (G32)640i
7.4 L/100 km
31.8 mpg US
38.2 mpg UK
BMWX3 (G01)M40i
8.4 L/100 km
28.0 mpg US
33.6 mpg UK

The biggest fuel consumption difference is between BMW 6 Series Gran Turismo (G32) 640i and BMW X3 (G01) M40i: 1.0 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
192 hp/t
143 kW/t
5.2 kg/hp
BMWX3 (G01)M40i
199 hp/t
148 kW/t
5.0 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
919 km
571 mi
BMWX3 (G01)M40i
774 km
481 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
5.4 s
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
BMWX3 (G01)M40i
360 hp
268 kW
4.8 s
250 km/h
155 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/h5.4 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
1,538 mm
60.6 in
BMWX3 (G01)M40i
Power
360 hp
268 kW
0-100 km/h4.8 s
Top speed
250 km/h
155 mph
Doors/seats
5 doors
5 seats
Trunk
550 L
19.4 cu ft
Length
4,716 mm
185.7 in
Height
1,676 mm
66.0 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/h5.4 s
Top speed
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
7.4 L/100 km
31.8 mpg US
38.2 mpg UK
BMWX3 (G01)M40i
Power
360 hp
268 kW
0-100 km/h4.8 s
Top speed
250 km/h
155 mph
8.4 L/100 km
28.0 mpg US
33.6 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
7.4 L/100 km
31.8 mpg US
38.2 mpg UK
5.4 s
BMWX3 (G01)M40i
8.4 L/100 km
28.0 mpg US
33.6 mpg UK
4.8 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 Gran Turismo (G32)640i
192 hp/t
143 kW/t
5.2 kg/hp
7.4 L/100 km
31.8 mpg US
38.2 mpg UK
BMWX3 (G01)M40i
199 hp/t
148 kW/t
5.0 kg/hp
8.4 L/100 km
28.0 mpg US
33.6 mpg UK

Detailed score breakdown

Detailed score breakdown
VehicleBMW6 Series Gran Turismo (G32)640iBMWX3 (G01)M40i
Power
340 hp
254 kW
360 hp
268 kW
Torque
450 Nm
332 lb-ft
500 Nm
369 lb-ft
Acceleration
5.4 s
4.8 s
Top speed
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
250 km/h
155 mph
Lightness
1,770 kg
3,902 lb
1,810 kg
3,990 lb
Fuel consumption
7.4 L/100 km
31.8 mpg US
38.2 mpg UK
8.4 L/100 km
28.0 mpg US
33.6 mpg UK
Practicality
Doors/seats
5 doors
5 seats
Trunk
610 L
21.5 cu ft
Length
5,091 mm
200.4 in
Height
1,538 mm
60.6 in
Doors/seats
5 doors
5 seats
Trunk
550 L
19.4 cu ft
Length
4,716 mm
185.7 in
Height
1,676 mm
66.0 in
Range score
919 km
571 mi
774 km
481 mi
CO2 score
169 g/km
193 g/km
Trunk score
610 L
21.5 cu ft
550 L
19.4 cu ft
Power-to-weight score
192 hp/t
143 kW/t
5.2 kg/hp
199 hp/t
148 kW/t
5.0 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 X3 (G01) M40i
Consumption7.4 L/100 km31.8 mpg US38.2 mpg UK8.4 L/100 km28 mpg US33.6 mpg UK
Cost / 100 km12.95 LC100 km14.70 LC100 km
Cost / 100 mi20.84 LC100 mi23.66 LC100 mi
Annual fuel used1,110 L293 US gal244 UK gal1,260 L333 US gal277 UK gal
Annual fuel cost1,943 LC/year2,205 LC/year

Head-to-head comparisons

BMW 6 Series Gran Turismo (G32) 640i

  • Is 40 kg lighter
  • Has 10 km/h (6 mph) higher top speed
  • Uses 1.0 L/100 km less fuel
  • Has 145 km (90 mi) more estimated range
  • Has 60 L more trunk volume
  • Emits 24 g/km less CO2

Pros

  • Highest top speed
  • Lightest
  • Lowest combined fuel consumption
  • Best estimated range
  • Largest trunk

Cons

  • Slowest 0-100 km/h
  • Lowest power

BMW X3 (G01) M40i

  • Has 20 hp more
  • Has 50 Nm more
  • Is 0.6 s quicker from 0-100 km/h
  • Has 7 hp/t better power-to-weight

Pros

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

Cons

  • Highest combined fuel consumption
  • Heaviest
  • Lowest top speed
  • Smallest trunk
  • Highest CO2 emissions

Choose cars to compare

Brand
Model
Generation
Engine or modification
BMW 6 Series Gran Turismo (G32) 640i
BMW X3 (G01) M40i
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