Car comparison

BMW 6 Series Gran Turismo (G32) 640dvsBMW X4 (G02) M40d

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

New comparison

BMW 6 Series Gran Turismo (G32)

640d

320 hp2993 ccDieselAWDAutomaticTurbocharged2017-2020
VS

BMW X4 (G02)

M40d

326 hp2993 ccDieselAWDAutomaticTurbocharged2018-2020

Comparison overview

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

Best choices

BMW 6 Series Gran Turismo (G32) 640d

  • Fastest top speed
    260 km/h
    162 mph Unrestricted
    250 km/h
    155 mph Restricted
  • Highest torque
    680 Nm
    502 lb-ft
  • Lowest combined fuel consumption
    6.2 L/100 km
    37.9 mpg US
    45.6 mpg UK
  • Lowest city consumption
    7.2 L/100 km
    32.7 mpg US
    39.2 mpg UK
  • Lowest highway consumption
    5.6 L/100 km
    42.0 mpg US
    50.4 mpg UK
  • Lowest CO2 emissions
    163 g/km
  • Best estimated range
    1,065 km
    661 mi
  • Largest trunk
    610 L
  • Best overall score
    74/100
  • Best performance score
    72/100
  • Best economy score
    90/100
  • Best practicality score
    79/100

BMW X4 (G02) M40d

  • Quickest 0-100 km/h
    4.9 s
  • Most powerful
    326 hp
    243 kW
  • Lightest
    1,895 kg
    4,178 lb
  • Best power-to-weight
    172 hp/t
    128 kW/t
    5.8 kg/hp

Specification comparison

Specification comparison
ModelBMW6 Series Gran Turismo (G32)640dBMWX4 (G02)M40d
Power
320hp239kW
326hp243kW
Torque
680Nm502lb-ft
680Nm502lb-ft
Curb weight
1,935kg4,266lb
1,895kg4,178lb
Gross weight
2,615kg5,765lb
2,525kg5,567lb
Top speed
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
Calculated
250 km/h
155 mph
To 99% top speed
73.3s99% target: 257 km/h / 160 mph
Calculated
72.7s99% target: 248 km/h / 154 mph
Calculated
0-100 km/h
5.3s
4.9s
0-200 km/h
19.3s
Calculated
20.0s
Calculated
0-60 mph
5.0s
Calculated
4.6s
Calculated
Fuel consumption
6.2L/100 km37.9mpg US45.6mpg UK
6.6L/100 km35.6mpg US42.8mpg UK
Fuel consumption city
7.2L/100 km32.7mpg US39.2mpg UK
7.3L/100 km32.2mpg US38.7mpg UK
Fuel consumption highway
5.6L/100 km42mpg US50.4mpg UK
6.3L/100 km37.3mpg US44.8mpg UK
Quarter mile
13.4s
Calculated
13.2s
Calculated
Power-to-weight
165hp/t123kW/t75hp/1000 lb
Calculated
172hp/t128kW/t78hp/1000 lb
Calculated
Torque-to-weight
351Nm/t235lb-ft/ton
Calculated
359Nm/t240lb-ft/ton
Calculated
Estimated range
1,065km661mi
Calculated
1,030km640mi
Calculated
Displacement
2,993cc183cu in
2,993cc183cu in
Length
5,091mm200in
4,752mm187in
Width
1,902mm75in
1,938mm76in
Height
1,540mm61in
1,621mm64in
Wheelbase
3,070mm121in
2,864mm113in
Front track-
1,615mm64in
Rear track-
1,624mm64in
Ground clearance-
204mm8in
Trunk volume
610L
525L
Max trunk volume
1,800L
1,430L
Doors
5
5
Seats
5
5
Fuel tank
66L
68L
CO2 emissions
163g/km
173g/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) 640dBMW X4 (G02) M40dPowerTorque
  • BMW 6 Series Gran Turismo (G32) 640d: Power / Torque
  • BMW X4 (G02) M40d: Power / Torque
Dyno simulation data table
VehiclePeak power RPMPeak torque RPMMax engine speed
BMW6 Series Gran Turismo (G32)640d4,400 rpm1,750-2,250 rpm4,650 rpm
BMWX4 (G02)M40d4,400 rpm1,750-2,750 rpm4,650 rpm

Acceleration curve

Estimated speed over time for selected vehicles.

Acceleration and drag-race table
MetricBMW6 Series Gran Turismo (G32)640dBMWX4 (G02)M40d
Acceleration checkpoints
0-60 mph
0-97 km/h
5.0 s
4.6 s
0-100 km/h
0-62 mph
5.3 s
4.9 s
0-200 km/h
0-124 mph
19.3 s
20.0 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
2.2 s
2.1 s
330 ft
101 m
5.8 s
5.6 s
1/8 mile
201 m
8.8 s
8.5 s
1000 ft
305 m
11.3 s
11.0 s
1/4 mile
402 m
13.4 s
13.2 s
Trap speed
1/4 mile
402 m
171 km/h
107 mph
170 km/h
106 mph

Power comparison

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

Chart data table
VehicleValue
BMW6 Series Gran Turismo (G32)640d
320 hp
239 kW
BMWX4 (G02)M40d
326 hp
243 kW

BMW X4 (G02) M40d has 6 hp more than BMW 6 Series Gran Turismo (G32) 640d.

The biggest power difference is between BMW 6 Series Gran Turismo (G32) 640d and BMW X4 (G02) M40d: 6 hp (4 kW).

Torque comparison

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

Chart data table
VehicleValue
BMW6 Series Gran Turismo (G32)640d
680 Nm
502 lb-ft
BMWX4 (G02)M40d
680 Nm
502 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)640d
1,935 kg
4,266 lb
BMWX4 (G02)M40d
1,895 kg
4,178 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)640d
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
BMWX4 (G02)M40d
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)640d5.3 s
BMWX4 (G02)M40d4.9 s

The biggest 0-100 km/h difference is between BMW X4 (G02) M40d and BMW 6 Series Gran Turismo (G32) 640d: 0.4 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)640d
6.2 L/100 km
37.9 mpg US
45.6 mpg UK
BMWX4 (G02)M40d
6.6 L/100 km
35.6 mpg US
42.8 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)640d
165 hp/t
123 kW/t
6.0 kg/hp
BMWX4 (G02)M40d
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 Gran Turismo (G32)640d
1,065 km
661 mi
BMWX4 (G02)M40d
1,030 km
640 mi

Performance spider chart

Radar chart comparing normalized performance and fuel-consumption scores.

Chart data table
VehiclePowerAccelerationTop speed
BMW6 Series Gran Turismo (G32)640d
320 hp
239 kW
5.3 s
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
BMWX4 (G02)M40d
326 hp
243 kW
4.9 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)640d
Power
320 hp
239 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
BMWX4 (G02)M40d
Power
326 hp
243 kW
0-100 km/h4.9 s
Top speed
250 km/h
155 mph
Doors/seats
5 doors
5 seats
Trunk
525 L
18.5 cu ft
Length
4,752 mm
187.1 in
Height
1,621 mm
63.8 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)640d
Power
320 hp
239 kW
0-100 km/h5.3 s
Top speed
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
6.2 L/100 km
37.9 mpg US
45.6 mpg UK
BMWX4 (G02)M40d
Power
326 hp
243 kW
0-100 km/h4.9 s
Top speed
250 km/h
155 mph
6.6 L/100 km
35.6 mpg US
42.8 mpg UK

BMW 6 Series Gran Turismo (G32) 640d 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)640d
6.2 L/100 km
37.9 mpg US
45.6 mpg UK
5.3 s
BMWX4 (G02)M40d
6.6 L/100 km
35.6 mpg US
42.8 mpg UK
4.9 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 Gran Turismo (G32)640d
165 hp/t
123 kW/t
6.0 kg/hp
6.2 L/100 km
37.9 mpg US
45.6 mpg UK
BMWX4 (G02)M40d
172 hp/t
128 kW/t
5.8 kg/hp
6.6 L/100 km
35.6 mpg US
42.8 mpg UK

Detailed score breakdown

Detailed score breakdown
VehicleBMW6 Series Gran Turismo (G32)640dBMWX4 (G02)M40d
Power
320 hp
239 kW
326 hp
243 kW
Torque
680 Nm
502 lb-ft
680 Nm
502 lb-ft
Acceleration
5.3 s
4.9 s
Top speed
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
250 km/h
155 mph
Lightness
1,935 kg
4,266 lb
1,895 kg
4,178 lb
Fuel consumption
6.2 L/100 km
37.9 mpg US
45.6 mpg UK
6.6 L/100 km
35.6 mpg US
42.8 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
525 L
18.5 cu ft
Length
4,752 mm
187.1 in
Height
1,621 mm
63.8 in
Range score
1,065 km
661 mi
1,030 km
640 mi
CO2 score
163 g/km
173 g/km
Trunk score
610 L
21.5 cu ft
525 L
18.5 cu ft
Power-to-weight score
165 hp/t
123 kW/t
6.0 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 Gran Turismo (G32) 640dBMW X4 (G02) M40d
Consumption6.2 L/100 km37.9 mpg US45.6 mpg UK6.6 L/100 km35.6 mpg US42.8 mpg UK
Cost / 100 km10.85 LC100 km11.55 LC100 km
Cost / 100 mi17.46 LC100 mi18.59 LC100 mi
Annual fuel used930 L246 US gal205 UK gal990 L262 US gal218 UK gal
Annual fuel cost1,628 LC/year1,733 LC/year

Head-to-head comparisons

BMW 6 Series Gran Turismo (G32) 640d

  • Has 10 km/h (6 mph) higher top speed
  • Uses 0.4 L/100 km less fuel
  • Has 34 km (21 mi) more estimated range
  • Has 85 L more trunk volume
  • Emits 10 g/km less CO2

Pros

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

Cons

  • Slowest 0-100 km/h
  • Lowest power
  • Heaviest

BMW X4 (G02) M40d

  • Has 6 hp more
  • Is 40 kg lighter
  • Is 0.4 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
  • Lightest
  • Best power-to-weight ratio

Cons

  • 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 Gran Turismo (G32) 640d
BMW X4 (G02) M40d
Compare selected cars
2 vehicles selected

Popular comparisons

640d
640i
VS
BMW6 Series Gran Turismo (G32)640dvsBMW6 Series Convertible (F12)640i
M40d
35d
VS
BMWX4 (G02)M40dvsBMWX4 (F26)35d
640d
640i
VS
BMW6 Series Gran Turismo (G32)640dvsBMW6 Series Gran Coupe (F06)640i
M40d
M40d
VS
BMWX4 (G02)M40dvsBMWX4 (G02 LCI)Facelift 2021M40d
640d
640i
VS
BMW6 Series Gran Turismo (G32)640dvsBMW6 Series Coupe (F13)640i
M40d
M40d
VS
BMWX4 (G02)M40dvsBMWX3 (G01)M40d
640d
635d
VS
BMW6 Series Gran Turismo (G32)640dvsBMW6 Series (E63)Facelift 2007635d
M40d
840d
VS
BMWX4 (G02)M40dvsBMW8 Series (G15)840d
640d
645Ci
VS
BMW6 Series Gran Turismo (G32)640dvsBMW6 Series (E63)645Ci
M40d
440i
VS
BMWX4 (G02)M40dvsBMW4 Series Gran Coupe (F36)Facelift 2017440i
640d
635d
VS
BMW6 Series Gran Turismo (G32)640dvsBMW6 Series Convertible (E64)Facelift 2007635d
M40d
540d
VS
BMWX4 (G02)M40dvsBMW5 Series Touring (G31)540d
BMW 6 Series Gran Turismo (G32) 640d vs BMW X4 (G02) M40d - car comparison - FastVsFaster