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AM440iPetrolvsB840dDiesel
  • MotorwayMotorwayRange and charging
  • PerformancePerformance0-100, top speed
  • ConsumptionConsumptionYearly cost
  • SpecsM440i · 840d

BMW M440i G22 vs BMW 840d xDrive G15: which is truly faster?

Simulated drag race 0 → 1,000 m in real time. Synchronised speed counters and stopwatch. Physics calibration on 7 manufacturer measurements.

saloon · 2021 vs 2018 · Methodology
BMWPetrolFaster

M440i G22

374 hp · 500 Nm · 1,695 kg · 2021

VS
BMWDiesel

840d xDrive G15

320 hp · 680 Nm · 1,830 kg · 2018

Result · 0–100 km/h

ABMW M440i G22

4.83 s

Gap0.13 sin favour of M440i
BBMW 840d xDrive G15

4.96 s

Summary · Caralogy simulation
MeasureM440i G22840d xDrive G15Gap
0–100 km/h4.83 s4.96 s0.13 s · M440i G22
400 m standing start12.93 s13.27 s0.34 s · M440i G22
1,000 m standing start23.15 s24.14 s0.99 s · M440i G22
Top speed (electronically limited)250 km/h250 km/hSame
Power-to-weight ratio4.53 kg/hp5.72 kg/hpbetter ratio · M440i G22

Watch the race

Standing-start drag race, calibrated on manufacturer splits. The gap shows at each stage.

BMWPetrolM440i G22
Speed
0km/h
Timer
0,00s
Distance
0m
BMWDiesel840d xDrive G15
Speed
0km/h
Timer
0,00s
Distance
0m
100 m
200 m
300 m
400 m
500 m
600 m
700 m
800 m
900 m
1000 m
0m → 1000m
Gap0m

Stage-by-stage comparison

Simulated performance at each stage. Best value in bold.
StageM440i G22840d xDrive G15
0–30 km/h1.39 s1.31 s · tight gap
0–50 km/h2.31 s2.10 s
0–80 km/h3.68 s3.58 s · tight gap
0–100 km/h4.83 s · tight gap4.96 s
0–120 km/h6.24 s6.70 s
0–160 km/h10.05 s11.43 s
0–200 km/h15.69 s18.72 s
400 m standing start12.93 s13.27 s
1,000 m standing start23.15 s24.14 s
Top speed limited250 km/h250 km/h

Parameters and assumptions

Simulation

Start
Standing, straight line
Surface
Dry asphalt, 23°C
Wind
None
Driver
1 person, 75 kg

Calibration

Splits
0–100, 0–200 manufacturer
Power curve
Real measurement (Caralogy)
VMax
Manufacturer limited
Transmission
Losses integrated in model

Physics model calibrated on manufacturer splits. The limited top speed is not the real aerodynamic top speed of the vehicles.

Under the bonnet

Manufacturer technical specifications. The power-to-weight ratio is the key physical factor in a drag race.

BMW

M440i G22

4,53kg/hpratio better by 1,19 kg/hp
CharacteristicValueDetail
Power374 hpPending
Torque500 Nm
Weight1 695 kgmanufacturer kerb weight
DrivetrainIntegrale (AWD)
GearboxEight-speed Steptronic transmission
BMW

840d xDrive G15

5,72kg/hpcompensated by −135 kg
CharacteristicValueDetail
Power320 hpPending
Torque680 Nm
Weight1 830 kgmanufacturer kerb weight
DrivetrainIntegrale (AWD)
GearboxEight-speed Steptronic transmission

The start: 0 to 100 km/h

Off the line, the M440i hits 100 km/h in 4.83 s versus 4.96 s for the 840d xDrive. Despite the faster sprint time, the 840d xDrive is 3 m further along the track at this moment: stronger low-speed acceleration offsets a slower run beyond 100 km/h.

From 100 km/h to 400 metres

At 200 metres, the M440i is doing 146 km/h against 139 km/h for the 840d xDrive. The gap is 0.08 s. The gap remains stable from the start.

At 400 metres standing start, the M440i crosses the line in 12.93 s versus 13.26 s. The 0.33 s gap represents roughly 16 m of track - two to three car lengths.

Beyond 400 metres: top speed comes into play

Past 400 metres, the M440i continues to build its lead. At 600 metres, it runs at 205 km/h versus 193 km/h. At 1,000 metres, the M440i finishes in 23.15 s versus 24.13 s, with a 0.99 s lead. Both vehicles have similar top speeds (250 (i.e. 155 mph - industry threshold) vs 250 (i.e. 155 mph - industry threshold) km/h), preventing any comeback.

What the numbers don’t tell you

Both rivals share the same electronic speed cap: the M440i and the 840d xDrive are governed to 250 (i.e. 155 mph - industry threshold) km/h. At that speed, standard-fit tyres approach their safety threshold - an industrial ceiling common to most electric vehicles in this segment. Neither car shows its true aerodynamic potential in this duel.

With two combustion powertrains, the difference comes down to power-to-weight ratio (4.53 kg/hp vs 5.72 kg/hp) and transmission (Automatic vs Automatic).

In European road use (130 km/h max), both vehicles reach the legal speed limit in under 7.70 seconds. The 0.13 s difference in 0 to 100 km/h is mostly felt in motorway merging and overtaking.

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Frequently asked questions

Over 0–100 km/h, M440i G22 wins (4,83 s vs 4,96 s).

M440i G22 goes from 0 to 100 km/h in 4,83 seconds (calibrated simulation).

M440i G22: 374 hp, ratio 4,53 kg/hp. 840d xDrive G15: 320 hp, ratio 5,72 kg/hp.

M440i G22: 250 km/h. 840d xDrive G15: 250 km/h.