Car comparison

BMW 8 Series (G15) 840dvsBMW 4 Series Coupe (G22) M440i

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

New comparison

BMW 8 Series (G15)

840d

340 hp2993 ccDieselAWDAutomaticTurbochargedCoupe2020-2022
VS

BMW 4 Series Coupe (G22)

M440i

382 hp2998 ccGasolineAWDAutomaticTurbochargedCoupe2020-2024

Comparison overview

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

Best choices

BMW 8 Series (G15) 840d

  • Fastest top speed
    265 km/h
    165 mph Unrestricted
    250 km/h
    155 mph Restricted
  • Highest torque
    700 Nm
    516 lb-ft
  • Lowest combined fuel consumption
    5.8 L/100 km
    40.6 mpg US
    48.7 mpg UK
  • Lowest city consumption
    7.3 L/100 km
    32.2 mpg US
    38.7 mpg UK
  • Lowest highway consumption
    5.0 L/100 km
    47.0 mpg US
    56.5 mpg UK
  • Best estimated range
    1,138 km
    707 mi
  • Best overall score
    68/100
  • Best performance score
    75/100
  • Best economy score
    91/100

BMW 4 Series Coupe (G22) M440i

  • Quickest 0-100 km/h
    4.5 s
  • Most powerful
    382 hp
    285 kW
  • Lightest
    1,804 kg
    3,977 lb
  • Best power-to-weight
    212 hp/t
    158 kW/t
    4.7 kg/hp
  • Largest trunk
    440 L
  • Best practicality score
    53/100

Specification comparison

Specification comparison
ModelBMW8 Series (G15)840dBMW4 Series Coupe (G22)M440i
Power
340hp254kW
382hp285kW
Torque
700Nm516lb-ft
500Nm369lb-ft
Curb weight
1,915kg4,222lb
1,804kg3,977lb
Gross weight
2,410kg5,313lb
2,245kg4,949lb
Top speed
Unrestricted
265 km/h165 mph
Restricted
250 km/h155 mph
Calculated
Unrestricted
225 km/h140 mph
Restricted
210 km/h130 mph
Calculated
To 99% top speed
69.3s99% target: 262 km/h / 163 mph
Calculated
48.5s99% target: 223 km/h / 138 mph
Calculated
0-100 km/h
4.8s
4.5s
0-200 km/h
17.2s
Calculated
20.6s
Calculated
0-60 mph
4.6s
Calculated
4.3s
Calculated
Fuel consumption
5.8L/100 km40.6mpg US48.7mpg UK
9.4L/100 km25mpg US30.1mpg UK
Fuel consumption city
7.3L/100 km32.2mpg US38.7mpg UK
10.7L/100 km22mpg US26.4mpg UK
Fuel consumption highway
5L/100 km47mpg US56.5mpg UK
7.6L/100 km30.9mpg US37.2mpg UK
Quarter mile
12.9s
Calculated
12.8s
Calculated
Power-to-weight
178hp/t132kW/t81hp/1000 lb
Calculated
212hp/t158kW/t96hp/1000 lb
Calculated
Torque-to-weight
366Nm/t245lb-ft/ton
Calculated
277Nm/t185lb-ft/ton
Calculated
Estimated range
1,138km707mi
Calculated
628km390mi
Calculated
Displacement
2,993cc183cu in
2,998cc183cu in
Length
4,843mm191in
4,775mm188in
Width
1,902mm75in
1,852mm73in
Height
1,341mm53in
1,393mm55in
Wheelbase
2,822mm111in
2,851mm112in
Front track
1,627mm64in
1,582mm62in
Rear track
1,642mm65in
1,593mm63in
Ground clearance
121mm5in
130mm5in
Trunk volume
420L
440L
Doors
2
2
Seats
4
4
Fuel tank
66L
59L

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 (G15) 840dBMW 4 Series Coupe (G22) M440iPowerTorque
  • BMW 8 Series (G15) 840d: Power / Torque
  • BMW 4 Series Coupe (G22) M440i: Power / Torque
Dyno simulation data table
VehiclePeak power RPMPeak torque RPMMax engine speed
BMW8 Series (G15)840d4,400 rpm1,750-2,250 rpm4,650 rpm
BMW4 Series Coupe (G22)M440i5,800-6,500 rpm1,800-5,000 rpm6,750 rpm

Acceleration curve

Estimated speed over time for selected vehicles.

Acceleration and drag-race table
MetricBMW8 Series (G15)840dBMW4 Series Coupe (G22)M440i
Acceleration checkpoints
0-60 mph
0-97 km/h
4.6 s
4.3 s
0-100 km/h
0-62 mph
4.8 s
4.5 s
0-200 km/h
0-124 mph
17.2 s
20.6 s
Top speed
Unrestricted
265 km/h165 mph
Restricted
250 km/h155 mph
Likely limited
Unrestricted
225 km/h140 mph
Restricted
210 km/h130 mph
Limited
Drag race simulation
60 ft
18 m
2.1 s
2.0 s
330 ft
101 m
5.6 s
5.4 s
1/8 mile
201 m
8.4 s
8.3 s
1000 ft
305 m
10.9 s
10.7 s
1/4 mile
402 m
12.9 s
12.8 s
Trap speed
1/4 mile
402 m
177 km/h
110 mph
173 km/h
107 mph

Power comparison

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

Chart data table
VehicleValue
BMW8 Series (G15)840d
340 hp
254 kW
BMW4 Series Coupe (G22)M440i
382 hp
285 kW

BMW 4 Series Coupe (G22) M440i has 42 hp more than BMW 8 Series (G15) 840d.

The biggest power difference is between BMW 8 Series (G15) 840d and BMW 4 Series Coupe (G22) M440i: 42 hp (31 kW).

Torque comparison

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

Chart data table
VehicleValue
BMW8 Series (G15)840d
700 Nm
516 lb-ft
BMW4 Series Coupe (G22)M440i
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 (G15)840d
1,915 kg
4,222 lb
BMW4 Series Coupe (G22)M440i
1,804 kg
3,977 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 (G15)840d
Unrestricted
265 km/h165 mph
Restricted
250 km/h155 mph
BMW4 Series Coupe (G22)M440i
Unrestricted
225 km/h140 mph
Restricted
210 km/h130 mph

0-100 km/h comparison

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

Chart data table
VehicleValue
BMW8 Series (G15)840d4.8 s
BMW4 Series Coupe (G22)M440i4.5 s

The biggest 0-100 km/h difference is between BMW 4 Series Coupe (G22) M440i and BMW 8 Series (G15) 840d: 0.3 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 (G15)840d
5.8 L/100 km
40.6 mpg US
48.7 mpg UK
BMW4 Series Coupe (G22)M440i
9.4 L/100 km
25.0 mpg US
30.1 mpg UK

The biggest fuel consumption difference is between BMW 8 Series (G15) 840d and BMW 4 Series Coupe (G22) M440i: 3.6 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 (G15)840d
178 hp/t
132 kW/t
5.6 kg/hp
BMW4 Series Coupe (G22)M440i
212 hp/t
158 kW/t
4.7 kg/hp

Estimated range comparison

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

Chart data table
VehicleValue
BMW8 Series (G15)840d
1,138 km
707 mi
BMW4 Series Coupe (G22)M440i
628 km
390 mi

Performance spider chart

Radar chart comparing normalized performance and fuel-consumption scores.

Chart data table
VehiclePowerAccelerationTop speed
BMW8 Series (G15)840d
340 hp
254 kW
4.8 s
Unrestricted
265 km/h165 mph
Restricted
250 km/h155 mph
BMW4 Series Coupe (G22)M440i
382 hp
285 kW
4.5 s
Unrestricted
225 km/h140 mph
Restricted
210 km/h130 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 (G15)840d
Power
340 hp
254 kW
0-100 km/h4.8 s
Top speed
Unrestricted
265 km/h165 mph
Restricted
250 km/h155 mph
Doors/seats
2 doors
4 seats
Trunk
420 L
14.8 cu ft
Length
4,843 mm
190.7 in
Height
1,341 mm
52.8 in
BMW4 Series Coupe (G22)M440i
Power
382 hp
285 kW
0-100 km/h4.5 s
Top speed
Unrestricted
225 km/h140 mph
Restricted
210 km/h130 mph
Doors/seats
2 doors
4 seats
Trunk
440 L
15.5 cu ft
Length
4,775 mm
188.0 in
Height
1,393 mm
54.8 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
BMW8 Series (G15)840d
Power
340 hp
254 kW
0-100 km/h4.8 s
Top speed
Unrestricted
265 km/h165 mph
Restricted
250 km/h155 mph
5.8 L/100 km
40.6 mpg US
48.7 mpg UK
BMW4 Series Coupe (G22)M440i
Power
382 hp
285 kW
0-100 km/h4.5 s
Top speed
Unrestricted
225 km/h140 mph
Restricted
210 km/h130 mph
9.4 L/100 km
25.0 mpg US
30.1 mpg UK

BMW 8 Series (G15) 840d 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 (G15)840d
5.8 L/100 km
40.6 mpg US
48.7 mpg UK
4.8 s
BMW4 Series Coupe (G22)M440i
9.4 L/100 km
25.0 mpg US
30.1 mpg UK
4.5 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
BMW8 Series (G15)840d
178 hp/t
132 kW/t
5.6 kg/hp
5.8 L/100 km
40.6 mpg US
48.7 mpg UK
BMW4 Series Coupe (G22)M440i
212 hp/t
158 kW/t
4.7 kg/hp
9.4 L/100 km
25.0 mpg US
30.1 mpg UK

Detailed score breakdown

Detailed score breakdown
VehicleBMW8 Series (G15)840dBMW4 Series Coupe (G22)M440i
Power
340 hp
254 kW
382 hp
285 kW
Torque
700 Nm
516 lb-ft
500 Nm
369 lb-ft
Acceleration
4.8 s
4.5 s
Top speed
Unrestricted
265 km/h165 mph
Restricted
250 km/h155 mph
Unrestricted
225 km/h140 mph
Restricted
210 km/h130 mph
Lightness
1,915 kg
4,222 lb
1,804 kg
3,977 lb
Fuel consumption
5.8 L/100 km
40.6 mpg US
48.7 mpg UK
9.4 L/100 km
25.0 mpg US
30.1 mpg UK
Practicality
Doors/seats
2 doors
4 seats
Trunk
420 L
14.8 cu ft
Length
4,843 mm
190.7 in
Height
1,341 mm
52.8 in
Doors/seats
2 doors
4 seats
Trunk
440 L
15.5 cu ft
Length
4,775 mm
188.0 in
Height
1,393 mm
54.8 in
Range score
1,138 km
707 mi
628 km
390 mi
Trunk score
420 L
14.8 cu ft
440 L
15.5 cu ft
Power-to-weight score
178 hp/t
132 kW/t
5.6 kg/hp
212 hp/t
158 kW/t
4.7 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 (G15) 840dBMW 4 Series Coupe (G22) M440i
Consumption5.8 L/100 km40.6 mpg US48.7 mpg UK9.4 L/100 km25 mpg US30.1 mpg UK
Cost / 100 km10.15 LC100 km16.45 LC100 km
Cost / 100 mi16.33 LC100 mi26.47 LC100 mi
Annual fuel used870 L230 US gal191 UK gal1,410 L372 US gal310 UK gal
Annual fuel cost1,523 LC/year2,468 LC/year

Head-to-head comparisons

BMW 8 Series (G15) 840d

  • Has 200 Nm more
  • Has 40 km/h (25 mph) higher top speed
  • Uses 3.6 L/100 km less fuel
  • Has 510 km (317 mi) more estimated range

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 4 Series Coupe (G22) M440i

  • Has 42 hp more
  • Is 111 kg lighter
  • Is 0.3 s quicker from 0-100 km/h
  • Has 34 hp/t better power-to-weight
  • Has 20 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

Choose cars to compare

Brand
Model
Generation
Engine or modification
BMW 8 Series (G15) 840d
BMW 4 Series Coupe (G22) M440i
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