Car comparison

BMW 4 Series Coupe (G22) M440dvsBMW 8 Series (G15) 840d

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

New comparison

BMW 4 Series Coupe (G22)

M440d

340 hp2993 ccDieselAWDAutomaticTurbochargedCoupe2021-2024
VS

BMW 8 Series (G15)

840d

320 hp2993 ccDieselAWDAutomaticTurbochargedCoupe2018-2020

Comparison overview

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

Best choices

BMW 4 Series Coupe (G22) M440d

  • Quickest 0-100 km/h
    4.6 s
  • Fastest top speed
    265 km/h
    165 mph Unrestricted
    250 km/h
    155 mph Restricted
  • Most powerful
    340 hp
    254 kW
  • Highest torque
    700 Nm
    516 lb-ft
  • Lightest
    1,830 kg
    4,034 lb
  • Best power-to-weight
    186 hp/t
    139 kW/t
    5.4 kg/hp
  • Lowest combined fuel consumption
    5.7 L/100 km
    41.3 mpg US
    49.6 mpg UK
  • Lowest city consumption
    7.5 L/100 km
    31.4 mpg US
    37.7 mpg UK
  • Lowest highway consumption
    4.7 L/100 km
    50.0 mpg US
    60.1 mpg UK
  • Largest trunk
    440 L
  • Best overall score
    69/100
  • Best performance score
    76/100
  • Best economy score
    91/100
  • Best practicality score
    53/100

Specification comparison

Specification comparison
ModelBMW4 Series Coupe (G22)M440dBMW8 Series (G15)840d
Power
340hp254kW
320hp239kW
Torque
700Nm516lb-ft
680Nm502lb-ft
Curb weight
1,830kg4,034lb
1,830kg4,034lb
Gross weight
2,340kg5,159lb
2,370kg5,225lb
Top speed
Unrestricted
265 km/h165 mph
Restricted
250 km/h155 mph
Calculated
Unrestricted
265 km/h165 mph
Restricted
250 km/h155 mph
Calculated
To 99% top speed
64.4s99% target: 262 km/h / 163 mph
Calculated
70.4s99% target: 262 km/h / 163 mph
Calculated
0-100 km/h
4.6s
4.9s
0-200 km/h
16.2s
Calculated
17.5s
Calculated
0-60 mph
4.4s
Calculated
4.7s
Calculated
Fuel consumption
5.7L/100 km41.3mpg US49.6mpg UK
6.2L/100 km37.9mpg US45.6mpg UK
Fuel consumption city
7.5L/100 km31.4mpg US37.7mpg UK
7.6L/100 km30.9mpg US37.2mpg UK
Fuel consumption highway
4.7L/100 km50mpg US60.1mpg UK
5.4L/100 km43.6mpg US52.3mpg UK
Quarter mile
12.7s
Calculated
13.0s
Calculated
Power-to-weight
186hp/t139kW/t84hp/1000 lb
Calculated
175hp/t130kW/t79hp/1000 lb
Calculated
Torque-to-weight
383Nm/t256lb-ft/ton
Calculated
372Nm/t249lb-ft/ton
Calculated
Estimated range
1,035km643mi
Calculated
1,097km682mi
Calculated
Displacement
2,993cc183cu in
2,993cc183cu in
Length
4,770mm188in
4,843mm191in
Width
1,852mm73in
1,902mm75in
Height
1,393mm55in
1,341mm53in
Wheelbase
2,851mm112in
2,822mm111in
Front track
1,575mm62in
1,627mm64in
Rear track
1,611mm63in
1,642mm65in
Ground clearance
129mm5in
121mm5in
Trunk volume
440L
420L
Doors
2
2
Seats
4
4
Fuel tank
59L
68L
CO2 emissions-
164g/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 4 Series Coupe (G22) M440dBMW 8 Series (G15) 840dPowerTorque
  • BMW 4 Series Coupe (G22) M440d: Power / Torque
  • BMW 8 Series (G15) 840d: Power / Torque
Dyno simulation data table
VehiclePeak power RPMPeak torque RPMMax engine speed
BMW4 Series Coupe (G22)M440d4,400 rpm1,750-2,250 rpm4,650 rpm
BMW8 Series (G15)840d4,400 rpm1,750-2,250 rpm4,650 rpm

Acceleration curve

Estimated speed over time for selected vehicles.

Acceleration and drag-race table
MetricBMW4 Series Coupe (G22)M440dBMW8 Series (G15)840d
Acceleration checkpoints
0-60 mph
0-97 km/h
4.4 s
4.7 s
0-100 km/h
0-62 mph
4.6 s
4.9 s
0-200 km/h
0-124 mph
16.2 s
17.5 s
Top speed
Unrestricted
265 km/h165 mph
Restricted
250 km/h155 mph
Limited
Unrestricted
265 km/h165 mph
Restricted
250 km/h155 mph
Likely limited
Drag race simulation
60 ft
18 m
2.1 s
2.1 s
330 ft
101 m
5.5 s
5.6 s
1/8 mile
201 m
8.3 s
8.5 s
1000 ft
305 m
10.7 s
11.0 s
1/4 mile
402 m
12.7 s
13.0 s
Trap speed
1/4 mile
402 m
180 km/h
112 mph
176 km/h
109 mph

Power comparison

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

Chart data table
VehicleValue
BMW4 Series Coupe (G22)M440d
340 hp
254 kW
BMW8 Series (G15)840d
320 hp
239 kW

BMW 4 Series Coupe (G22) M440d has 20 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) M440d: 20 hp (15 kW).

Torque comparison

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

Chart data table
VehicleValue
BMW4 Series Coupe (G22)M440d
700 Nm
516 lb-ft
BMW8 Series (G15)840d
680 Nm
502 lb-ft

Curb weight comparison

Bar comparison chart for Curb weight. Lower is better · kg / lb

Chart data table
VehicleValue
BMW4 Series Coupe (G22)M440d
1,830 kg
4,034 lb
BMW8 Series (G15)840d
1,830 kg
4,034 lb

Top speed without limiter comparison

Bar comparison chart for Top speed without limiter. Higher is better · km/h / mph

Chart data table
VehicleValue
BMW4 Series Coupe (G22)M440d
Unrestricted
265 km/h165 mph
Restricted
250 km/h155 mph
BMW8 Series (G15)840d
Unrestricted
265 km/h165 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
BMW4 Series Coupe (G22)M440d4.6 s
BMW8 Series (G15)840d4.9 s

The biggest 0-100 km/h difference is between BMW 4 Series Coupe (G22) M440d 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
BMW4 Series Coupe (G22)M440d
5.7 L/100 km
41.3 mpg US
49.6 mpg UK
BMW8 Series (G15)840d
6.2 L/100 km
37.9 mpg US
45.6 mpg UK

The biggest fuel consumption difference is between BMW 4 Series Coupe (G22) M440d and BMW 8 Series (G15) 840d: 0.5 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
BMW4 Series Coupe (G22)M440d
186 hp/t
139 kW/t
5.4 kg/hp
BMW8 Series (G15)840d
175 hp/t
130 kW/t
5.7 kg/hp

Estimated range comparison

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

Chart data table
VehicleValue
BMW4 Series Coupe (G22)M440d
1,035 km
643 mi
BMW8 Series (G15)840d
1,097 km
682 mi

Performance spider chart

Radar chart comparing normalized performance and fuel-consumption scores.

Chart data table
VehiclePowerAccelerationTop speed
BMW4 Series Coupe (G22)M440d
340 hp
254 kW
4.6 s
Unrestricted
265 km/h165 mph
Restricted
250 km/h155 mph
BMW8 Series (G15)840d
320 hp
239 kW
4.9 s
Unrestricted
265 km/h165 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
BMW4 Series Coupe (G22)M440d
Power
340 hp
254 kW
0-100 km/h4.6 s
Top speed
Unrestricted
265 km/h165 mph
Restricted
250 km/h155 mph
Doors/seats
2 doors
4 seats
Trunk
440 L
15.5 cu ft
Length
4,770 mm
187.8 in
Height
1,393 mm
54.8 in
BMW8 Series (G15)840d
Power
320 hp
239 kW
0-100 km/h4.9 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

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
BMW4 Series Coupe (G22)M440d
Power
340 hp
254 kW
0-100 km/h4.6 s
Top speed
Unrestricted
265 km/h165 mph
Restricted
250 km/h155 mph
5.7 L/100 km
41.3 mpg US
49.6 mpg UK
BMW8 Series (G15)840d
Power
320 hp
239 kW
0-100 km/h4.9 s
Top speed
Unrestricted
265 km/h165 mph
Restricted
250 km/h155 mph
6.2 L/100 km
37.9 mpg US
45.6 mpg UK

BMW 4 Series Coupe (G22) M440d 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
BMW4 Series Coupe (G22)M440d
5.7 L/100 km
41.3 mpg US
49.6 mpg UK
4.6 s
BMW8 Series (G15)840d
6.2 L/100 km
37.9 mpg US
45.6 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
BMW4 Series Coupe (G22)M440d
186 hp/t
139 kW/t
5.4 kg/hp
5.7 L/100 km
41.3 mpg US
49.6 mpg UK
BMW8 Series (G15)840d
175 hp/t
130 kW/t
5.7 kg/hp
6.2 L/100 km
37.9 mpg US
45.6 mpg UK

Detailed score breakdown

Detailed score breakdown
VehicleBMW4 Series Coupe (G22)M440dBMW8 Series (G15)840d
Power
340 hp
254 kW
320 hp
239 kW
Torque
700 Nm
516 lb-ft
680 Nm
502 lb-ft
Acceleration
4.6 s
4.9 s
Top speed
Unrestricted
265 km/h165 mph
Restricted
250 km/h155 mph
Unrestricted
265 km/h165 mph
Restricted
250 km/h155 mph
Lightness
1,830 kg
4,034 lb
1,830 kg
4,034 lb
Fuel consumption
5.7 L/100 km
41.3 mpg US
49.6 mpg UK
6.2 L/100 km
37.9 mpg US
45.6 mpg UK
Practicality
Doors/seats
2 doors
4 seats
Trunk
440 L
15.5 cu ft
Length
4,770 mm
187.8 in
Height
1,393 mm
54.8 in
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
Range score
1,035 km
643 mi
1,097 km
682 mi
CO2 score
-
164 g/km
Trunk score
440 L
15.5 cu ft
420 L
14.8 cu ft
Power-to-weight score
186 hp/t
139 kW/t
5.4 kg/hp
175 hp/t
130 kW/t
5.7 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 4 Series Coupe (G22) M440dBMW 8 Series (G15) 840d
Consumption5.7 L/100 km41.3 mpg US49.6 mpg UK6.2 L/100 km37.9 mpg US45.6 mpg UK
Cost / 100 km9.98 LC100 km10.85 LC100 km
Cost / 100 mi16.05 LC100 mi17.46 LC100 mi
Annual fuel used855 L226 US gal188 UK gal930 L246 US gal205 UK gal
Annual fuel cost1,496 LC/year1,628 LC/year

Head-to-head comparisons

BMW 4 Series Coupe (G22) M440d

  • Has 20 hp more
  • Has 20 Nm more
  • Is 0.3 s quicker from 0-100 km/h
  • Uses 0.5 L/100 km less fuel
  • Has 11 hp/t better power-to-weight
  • Has 20 L more trunk volume

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 8 Series (G15) 840d

  • Has 62 km (38 mi) more estimated range

Pros

  • Best estimated range

Cons

  • Slowest 0-100 km/h
  • Lowest power
  • Highest combined fuel consumption
  • Smallest trunk

Choose cars to compare

Brand
Model
Generation
Engine or modification
BMW 4 Series Coupe (G22) M440d
BMW 8 Series (G15) 840d
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