Car comparison

BMW 8 Series Gran Coupe (G16) 840ivsBMW X3 (G01) M40i

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

New comparison

BMW 8 Series Gran Coupe (G16)

840i

340 hp2998 ccGasolineAWDAutomaticTurbochargedCoupe2019-2020
VS

BMW X3 (G01)

M40i

354 hp2998 ccGasolineAWDAutomaticTurbocharged2018-2019

Comparison overview

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

Best choices

BMW 8 Series Gran Coupe (G16) 840i

  • Fastest top speed
    265 km/h
    165 mph Unrestricted
    250 km/h
    155 mph Restricted
  • Highest torque
    500 Nm
    369 lb-ft
  • Lowest combined fuel consumption
    7.8 L/100 km
    30.2 mpg US
    36.2 mpg UK
  • Lowest city consumption
    9.8 L/100 km
    24.0 mpg US
    28.8 mpg UK
  • Lowest highway consumption
    6.7 L/100 km
    35.1 mpg US
    42.2 mpg UK
  • Lowest CO2 emissions
    179 g/km
  • Best estimated range
    872 km
    542 mi
  • Best performance score
    71/100
  • Best economy score
    86/100

BMW X3 (G01) M40i

  • Quickest 0-100 km/h
    4.8 s
  • Most powerful
    354 hp
    264 kW
  • Lightest
    1,810 kg
    3,990 lb
  • Best power-to-weight
    196 hp/t
    146 kW/t
    5.1 kg/hp
  • Largest trunk
    550 L
  • Best overall score
    72/100
  • Best practicality score
    77/100

Specification comparison

Specification comparison
ModelBMW8 Series Gran Coupe (G16)840iBMWX3 (G01)M40i
Power
340hp254kW
354hp264kW
Torque
500Nm369lb-ft
500Nm369lb-ft
Curb weight
1,855kg4,090lb
1,810kg3,990lb
Gross weight
2,480kg5,467lb
2,455kg5,412lb
Top speed
Unrestricted
265 km/h165 mph
Restricted
250 km/h155 mph
Calculated
250 km/h
155 mph
To 99% top speed
71.7s99% target: 262 km/h / 163 mph
Calculated
69.5s99% target: 248 km/h / 154 mph
Calculated
0-100 km/h
4.9s
4.8s
0-200 km/h
17.7s
Calculated
19.4s
Calculated
0-60 mph
4.7s
Calculated
4.5s
Calculated
Fuel consumption
7.8L/100 km30.2mpg US36.2mpg UK
9.1L/100 km25.8mpg US31.0mpg UK
Fuel consumption city
9.8L/100 km24mpg US28.8mpg UK
11.5L/100 km20.5mpg US24.6mpg UK
Fuel consumption highway
6.7L/100 km35.1mpg US42.2mpg UK
7.8L/100 km30.2mpg US36.2mpg UK
Quarter mile
13.1s
Calculated
13.1s
Calculated
Power-to-weight
183hp/t137kW/t83hp/1000 lb
Calculated
196hp/t146kW/t89hp/1000 lb
Calculated
Torque-to-weight
270Nm/t180lb-ft/ton
Calculated
276Nm/t185lb-ft/ton
Calculated
Estimated range
872km542mi
Calculated
714km444mi
Calculated
Displacement
2,998cc183cu in
2,998cc183cu in
Length
5,082mm200in
4,716mm186in
Width
1,932mm76in
1,897mm75in
Height
1,407mm55in
1,676mm66in
Wheelbase
3,023mm119in
2,864mm113in
Front track
1,627mm64in
1,615mm64in
Rear track
1,671mm66in
1,594mm63in
Ground clearance-
204mm8in
Trunk volume-
550L
Max trunk volume
440L
1,600L
Doors
4
5
Seats
5
5
Fuel tank
68L
65L
CO2 emissions
179g/km
207g/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 8 Series Gran Coupe (G16) 840iBMW X3 (G01) M40iPowerTorque
  • BMW 8 Series Gran Coupe (G16) 840i: Power / Torque
  • BMW X3 (G01) M40i: Power / Torque
Dyno simulation data table
VehiclePeak power RPMPeak torque RPMMax engine speed
BMW8 Series Gran Coupe (G16)840i5,000-6,500 rpm1,600-4,500 rpm6,750 rpm
BMWX3 (G01)M40i5,500-6,500 rpm1,520-4,500 rpm6,750 rpm

Acceleration curve

Estimated speed over time for selected vehicles.

Acceleration and drag-race table
MetricBMW8 Series Gran Coupe (G16)840iBMWX3 (G01)M40i
Acceleration checkpoints
0-60 mph
0-97 km/h
4.7 s
4.5 s
0-100 km/h
0-62 mph
4.9 s
4.8 s
0-200 km/h
0-124 mph
17.7 s
19.4 s
Top speed
Unrestricted
265 km/h165 mph
Restricted
250 km/h155 mph
Likely limited
250 km/h
155 mph
Drag race simulation
60 ft
18 m
2.1 s
2.1 s
330 ft
101 m
5.6 s
5.6 s
1/8 mile
201 m
8.5 s
8.4 s
1000 ft
305 m
11.0 s
10.9 s
1/4 mile
402 m
13.1 s
13.1 s
Trap speed
1/4 mile
402 m
176 km/h
109 mph
172 km/h
107 mph

Power comparison

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

Chart data table
VehicleValue
BMW8 Series Gran Coupe (G16)840i
340 hp
254 kW
BMWX3 (G01)M40i
354 hp
264 kW

BMW X3 (G01) M40i has 14 hp more than BMW 8 Series Gran Coupe (G16) 840i.

The biggest power difference is between BMW 8 Series Gran Coupe (G16) 840i and BMW X3 (G01) M40i: 14 hp (10 kW).

Torque comparison

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

Chart data table
VehicleValue
BMW8 Series Gran Coupe (G16)840i
500 Nm
369 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
BMW8 Series Gran Coupe (G16)840i
1,855 kg
4,090 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
BMW8 Series Gran Coupe (G16)840i
Unrestricted
265 km/h165 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
BMW8 Series Gran Coupe (G16)840i4.9 s
BMWX3 (G01)M40i4.8 s

The biggest 0-100 km/h difference is between BMW X3 (G01) M40i and BMW 8 Series Gran Coupe (G16) 840i: 0.1 s.

Fuel consumption comparison

Bar comparison chart for Fuel consumption. Lower is better · L/100 km / mpg US / mpg UK

Chart data table
VehicleValue
BMW8 Series Gran Coupe (G16)840i
7.8 L/100 km
30.2 mpg US
36.2 mpg UK
BMWX3 (G01)M40i
9.1 L/100 km
25.8 mpg US
31.0 mpg UK

The biggest fuel consumption difference is between BMW 8 Series Gran Coupe (G16) 840i and BMW X3 (G01) M40i: 1.3 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
BMW8 Series Gran Coupe (G16)840i
183 hp/t
137 kW/t
5.5 kg/hp
BMWX3 (G01)M40i
196 hp/t
146 kW/t
5.1 kg/hp

Estimated range comparison

Bar comparison chart for Estimated range. Higher is better · km / mi

Chart data table
VehicleValue
BMW8 Series Gran Coupe (G16)840i
872 km
542 mi
BMWX3 (G01)M40i
714 km
444 mi

Performance spider chart

Radar chart comparing normalized performance and fuel-consumption scores.

Chart data table
VehiclePowerAccelerationTop speed
BMW8 Series Gran Coupe (G16)840i
340 hp
254 kW
4.9 s
Unrestricted
265 km/h165 mph
Restricted
250 km/h155 mph
BMWX3 (G01)M40i
354 hp
264 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
BMW8 Series Gran Coupe (G16)840i
Power
340 hp
254 kW
0-100 km/h4.9 s
Top speed
Unrestricted
265 km/h165 mph
Restricted
250 km/h155 mph
Doors/seats
4 doors
5 seats
Trunk
440 L
15.5 cu ft
Length
5,082 mm
200.1 in
Height
1,407 mm
55.4 in
BMWX3 (G01)M40i
Power
354 hp
264 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
BMW8 Series Gran Coupe (G16)840i
Power
340 hp
254 kW
0-100 km/h4.9 s
Top speed
Unrestricted
265 km/h165 mph
Restricted
250 km/h155 mph
7.8 L/100 km
30.2 mpg US
36.2 mpg UK
BMWX3 (G01)M40i
Power
354 hp
264 kW
0-100 km/h4.8 s
Top speed
250 km/h
155 mph
9.1 L/100 km
25.8 mpg US
31.0 mpg UK

BMW 8 Series Gran Coupe (G16) 840i 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
BMW8 Series Gran Coupe (G16)840i
7.8 L/100 km
30.2 mpg US
36.2 mpg UK
4.9 s
BMWX3 (G01)M40i
9.1 L/100 km
25.8 mpg US
31.0 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
BMW8 Series Gran Coupe (G16)840i
183 hp/t
137 kW/t
5.5 kg/hp
7.8 L/100 km
30.2 mpg US
36.2 mpg UK
BMWX3 (G01)M40i
196 hp/t
146 kW/t
5.1 kg/hp
9.1 L/100 km
25.8 mpg US
31.0 mpg UK

Detailed score breakdown

Detailed score breakdown
VehicleBMW8 Series Gran Coupe (G16)840iBMWX3 (G01)M40i
Power
340 hp
254 kW
354 hp
264 kW
Torque
500 Nm
369 lb-ft
500 Nm
369 lb-ft
Acceleration
4.9 s
4.8 s
Top speed
Unrestricted
265 km/h165 mph
Restricted
250 km/h155 mph
250 km/h
155 mph
Lightness
1,855 kg
4,090 lb
1,810 kg
3,990 lb
Fuel consumption
7.8 L/100 km
30.2 mpg US
36.2 mpg UK
9.1 L/100 km
25.8 mpg US
31.0 mpg UK
Practicality
Doors/seats
4 doors
5 seats
Trunk
440 L
15.5 cu ft
Length
5,082 mm
200.1 in
Height
1,407 mm
55.4 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
872 km
542 mi
714 km
444 mi
CO2 score
179 g/km
207 g/km
Trunk score
440 L
15.5 cu ft
550 L
19.4 cu ft
Power-to-weight score
183 hp/t
137 kW/t
5.5 kg/hp
196 hp/t
146 kW/t
5.1 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 8 Series Gran Coupe (G16) 840iBMW X3 (G01) M40i
Consumption7.8 L/100 km30.2 mpg US36.2 mpg UK9.1 L/100 km25.8 mpg US31 mpg UK
Cost / 100 km13.65 LC100 km15.92 LC100 km
Cost / 100 mi21.97 LC100 mi25.63 LC100 mi
Annual fuel used1,170 L309 US gal257 UK gal1,365 L361 US gal300 UK gal
Annual fuel cost2,048 LC/year2,389 LC/year

Head-to-head comparisons

BMW 8 Series Gran Coupe (G16) 840i

  • Has 15 km/h (9 mph) higher top speed
  • Uses 1.3 L/100 km less fuel
  • Has 158 km (98 mi) more estimated range
  • Emits 28 g/km less CO2

Pros

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

Cons

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

BMW X3 (G01) M40i

  • Has 14 hp more
  • Is 45 kg lighter
  • Is 0.1 s quicker from 0-100 km/h
  • Has 12 hp/t better power-to-weight
  • Has 110 L more trunk volume

Pros

  • Quickest 0-100 km/h in this comparison
  • Most powerful
  • Lightest
  • Best power-to-weight ratio
  • Largest trunk

Cons

  • Highest combined fuel consumption
  • Lowest top speed
  • Highest CO2 emissions

Choose cars to compare

Brand
Model
Generation
Engine or modification
BMW 8 Series Gran Coupe (G16) 840i
BMW X3 (G01) M40i
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