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AM440dDieselvsBZ4Petrol
  • MotorwayMotorwayRange and charging
  • PerformancePerformance0-100, top speed
  • ConsumptionConsumptionYearly cost
  • SpecsM440d · Z4

BMW M440d xDrive G22 vs BMW Z4 M40i G29: 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
BMWDiesel

M440d xDrive G22

340 hp · 700 Nm · 1,830 kg · 2021

VS
BMWPetrol

Z4 M40i G29

340 hp · 500 Nm · 1,535 kg · 2018

Result · 0–100 km/h

ABMW M440d xDrive G22

4.57 s

Gap0.03 sNot a significant gap
BBMW Z4 M40i G29

4.54 s

Summary · Caralogy simulation
MeasureM440d xDrive G22Z4 M40i G29Gap
0–100 km/h4.57 s4.54 s0.03 s · Z4 M40i G29
400 m standing start12.89 s12.70 s0.19 s · Z4 M40i G29
1,000 m standing start23.61 s22.95 s0.66 s · Z4 M40i G29
Top speed (electronically limited)250 km/h250 km/hSame
Power-to-weight ratio5.38 kg/hp4.51 kg/hpbetter ratio · Z4 M40i G29

Watch the race

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

BMWDieselM440d xDrive G22
Speed
0km/h
Timer
0,00s
Distance
0m
BMWPetrolZ4 M40i G29
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.
StageM440d xDrive G22Z4 M40i G29
0–30 km/h1.08 s1.27 s
0–50 km/h1.79 s2.12 s
0–80 km/h3.24 s3.42 s
0–100 km/h4.57 s4.54 s · tight gap
0–120 km/h6.24 s5.95 s
0–160 km/h10.78 s9.74 s
0–200 km/h17.64 s15.46 s
400 m standing start12.89 s12.70 s
1,000 m standing start23.61 s22.95 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

M440d xDrive G22

5,38kg/hpcompensated by −295 kg
CharacteristicValueDetail
Power340 hp6 cyl
Torque700 Nm
Weight1 830 kgmanufacturer kerb weight
DrivetrainIntegrale (AWD)
GearboxEight-speed Steptronic transmission
BMW

Z4 M40i G29

4,51kg/hpratio better by 0,87 kg/hp
CharacteristicValueDetail
Power340 hp6 cyl
Torque500 Nm
Weight1 535 kgmanufacturer kerb weight
Drivetrain-
GearboxEight-speed Steptronic transmission

The start: 0 to 100 km/h

Off the line, the Z4 M40i hits 100 km/h in 4.54 s versus 4.57 s for the M440d xDrive. The 0.03 s gap is negligible: both vehicles are neck and neck.

From 100 km/h to 400 metres

At 200 metres, the M440d xDrive is doing 140 km/h against 147 km/h for the Z4 M40i. The gap is 0.02 s. The gap remains stable from the start.

At 400 metres standing start, the Z4 M40i crosses the line in 12.70 s versus 12.89 s. The 0.19 s gap represents roughly 9 m of track - barely a car length.

Beyond 400 metres: top speed comes into play

Past 400 metres, the Z4 M40i continues to build its lead. At 600 metres, it runs at 205 km/h versus 196 km/h. At 1,000 metres, the Z4 M40i finishes in 22.95 s versus 23.61 s, with a 0.66 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 M440d xDrive and the Z4 M40i 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 (5.38 kg/hp vs 4.51 kg/hp) and transmission (Automatic vs Automatic).

In European road use (130 km/h max), both vehicles reach the legal speed limit in under 7.21 seconds. The 0.03 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, M440d xDrive G22 and Z4 M40i G29 are neck and neck (4,54 s vs 4,57 s, no significant gap).

M440d xDrive G22 goes from 0 to 100 km/h in 4,57 seconds (calibrated simulation).

M440d xDrive G22: 340 hp, ratio 5,38 kg/hp. Z4 M40i G29: 340 hp, ratio 4,51 kg/hp.

M440d xDrive G22: 250 km/h. Z4 M40i G29: 250 km/h.