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BMW iX xDrive40 vs BMW X4 xDrive30d G02: 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.

large SUV · 2021 vs 2021 · Methodology
BMWBEV

iX xDrive40

326 hp · 630 Nm · 2,440 kg · 2021

VS
BMWDieselFaster

X4 xDrive30d G02

286 hp · 650 Nm · 1,930 kg · 2021

Result · 0–100 km/h

ABMW iX xDrive40

6.04 s

Gap0.23 sin favour of X4 xDrive30d
BBMW X4 xDrive30d G02

5.81 s

Summary · Caralogy simulation
MeasureiX xDrive40X4 xDrive30d G02Gap
0–100 km/h6.04 s5.81 s0.23 s · X4 xDrive30d G02
400 m standing start14.37 s14.13 s0.24 s · X4 xDrive30d G02
1,000 m standing start26.37 s25.96 s0.41 s · X4 xDrive30d G02
Top speed (electronically limited)200 km/h245 km/h45 km/h · X4 xDrive30d G02
Power-to-weight ratio7.48 kg/hp6.75 kg/hpbetter ratio · X4 xDrive30d G02

Watch the race

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

BMWBEViX xDrive40
Speed
0km/h
Timer
0,00s
Distance
0m
BMWDieselX4 xDrive30d G02
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.
StageiX xDrive40X4 xDrive30d G02
0–30 km/h1.42 s1.35 s · tight gap
0–50 km/h2.37 s2.21 s
0–80 km/h4.25 s4.08 s
0–100 km/h6.04 s5.81 s
0–120 km/h8.34 s8.01 s
0–160 km/h15.21 s14.32 s
0–200 km/h26.44 s25.39 s
400 m standing start14.37 s14.13 s
1,000 m standing start26.37 s25.96 s
Top speed200 km/h245 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

iX xDrive40

7,48kg/hpcompensated by −510 kg
CharacteristicValueDetail
Power326 hpPending
Torque630 Nm
Weight2 440 kgmanufacturer kerb weight
DrivetrainIntegrale (AWD)
GearboxSingle-speed reduction gear
BMW

X4 xDrive30d G02

6,75kg/hpratio better by 0,74 kg/hp
CharacteristicValueDetail
Power286 hp6 cyl
Torque650 Nm
Weight1 930 kgmanufacturer kerb weight
DrivetrainIntegrale (AWD)
Gearbox8-speed Steptronic

The start: 0 to 100 km/h

Off the line, the X4 xDrive30d hits 100 km/h in 5.81 s versus 6.04 s for the iX xDrive40. Despite lacking instant torque, 286 hp of power compensates. At this point, the X4 xDrive30d leads by 0.23 s and sits roughly 3 m ahead.

From 100 km/h to 400 metres

At 200 metres, the X4 xDrive30d is doing 129 km/h against 127 km/h for the iX xDrive40. The gap is 0.15 s. The gap remains stable from the start.

At 400 metres standing start, the X4 xDrive30d crosses the line in 14.13 s versus 14.36 s. The 0.24 s gap represents roughly 10 m of track - two to three car lengths.

Beyond 400 metres: top speed comes into play

Past 400 metres, the X4 xDrive30d continues to build its lead. At 600 metres, it runs at 178 km/h versus 175 km/h. At 1,000 metres, the X4 xDrive30d finishes in 25.95 s versus 26.37 s, with a 0.42 s lead.

What the numbers don’t tell you

Both rivals are electronically governed, but not at the same level: the iX xDrive40 is capped at 200 km/h, the X4 xDrive30d at 245 km/h. This isn’t a physical engine limit - it’s a manufacturer choice, usually for tyre safety or homologation reasons. Neither car reaches its true aerodynamic top speed.

Instant electric torque gives an advantage off the line. The higher top speed of the combustion engine gives an advantage over longer distances. The distance at which one catches the other depends on the top speed differential.

In European road use (130 km/h max), both vehicles reach the legal speed limit in under 9.74 seconds. The 0.23 s difference in 0 to 100 km/h is mostly felt in motorway merging and overtaking.

Compare with other alternatives

Swap one of the two models to explore an equivalent duel in the same segment.

Instead of iX xDrive40
Tesla Model Y Long Range RWD

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Frequently asked questions

Over 0–100 km/h, X4 xDrive30d G02 wins (5,81 s vs 6,04 s).

iX xDrive40 goes from 0 to 100 km/h in 6,04 seconds (calibrated simulation).

iX xDrive40: 326 hp, ratio 7,48 kg/hp. X4 xDrive30d G02: 286 hp, ratio 6,75 kg/hp.

iX xDrive40: 200 km/h. X4 xDrive30d G02: 245 km/h.