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A540iPetrolvsBX4Diesel
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  • Specs540i · X4

BMW 540i xDrive Touring G30 vs BMW X4 M40d 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.

grand tourer · 2018 vs 2018 · Methodology
BMWPetrol

540i xDrive Touring G30

340 hp · 450 Nm · 1,765 kg · 2018

VS
BMWDieselFaster

X4 M40d G02

326 hp · 680 Nm · 1,895 kg · 2018

Result · 0–100 km/h

ABMW 540i xDrive Touring G30

5.07 s

Gap0.13 sin favour of X4 M40d
BBMW X4 M40d G02

4.94 s

Summary · Caralogy simulation
Measure540i xDrive Touring G30X4 M40d G02Gap
0–100 km/h5.07 s4.94 s0.13 s · X4 M40d G02
400 m standing start13.26 s13.29 s0.03 s · 540i xDrive Touring G30
1,000 m standing start24.02 s24.39 s0.37 s · 540i xDrive Touring G30
Top speed (electronically limited)250 km/h250 km/hSame
Power-to-weight ratio5.19 kg/hp5.81 kg/hpbetter ratio · 540i xDrive Touring G30

Watch the race

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

BMWPetrol540i xDrive Touring G30
Speed
0km/h
Timer
0,00s
Distance
0m
BMWDieselX4 M40d 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.
Stage540i xDrive Touring G30X4 M40d G02
0–30 km/h1.29 s1.25 s · tight gap
0–50 km/h2.15 s2.02 s · tight gap
0–80 km/h3.66 s3.53 s · tight gap
0–100 km/h5.07 s4.94 s · tight gap
0–120 km/h6.71 s · tight gap6.72 s
0–160 km/h11.19 s11.71 s
0–200 km/h18.14 s19.89 s
400 m standing start13.26 s · tight gap13.29 s
1,000 m standing start24.02 s24.39 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

540i xDrive Touring G30

5,19kg/hpratio better by 0,62 kg/hp
CharacteristicValueDetail
Power340 hp6 cyl
Torque450 Nm
Weight1 765 kgmanufacturer kerb weight
DrivetrainIntegrale (AWD)
Gearbox8-speed Steptronic
BMW

X4 M40d G02

5,81kg/hpcompensated by −130 kg
CharacteristicValueDetail
Power326 hp6 cyl
Torque680 Nm
Weight1 895 kgmanufacturer kerb weight
DrivetrainIntegrale (AWD)
Gearbox8-speed Steptronic

The start: 0 to 100 km/h

Off the line, the X4 M40d hits 100 km/h in 4.94 s versus 5.07 s for the 540i xDrive Touring. At this point, the X4 M40d leads by 0.13 s and sits roughly 3 m ahead.

From 100 km/h to 400 metres

At 200 metres, the X4 M40d is doing 137 km/h against 140 km/h for the 540i xDrive Touring. The gap is 0.06 s. The gap remains stable from the start.

At 400 metres standing start, the 540i xDrive Touring crosses the line in 13.25 s versus 13.29 s. The 0.03 s gap represents roughly 2 m of track

Beyond 400 metres: top speed comes into play

Past 400 metres, the 540i xDrive Touring continues to build its lead. At 600 metres, it runs at 195 km/h versus 190 km/h. At 1,000 metres, the 540i xDrive Touring finishes in 24.02 s versus 24.38 s, with a 0.37 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 540i xDrive Touring and the X4 M40d 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 (5.19 kg/hp vs 5.81 kg/hp) and transmission (Automatic vs Automatic).

In European road use (130 km/h max), both vehicles reach the legal speed limit in under 7.77 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, X4 M40d G02 wins (4,94 s vs 5,07 s).

540i xDrive Touring G30 goes from 0 to 100 km/h in 5,07 seconds (calibrated simulation).

540i xDrive Touring G30: 340 hp, ratio 5,19 kg/hp. X4 M40d G02: 326 hp, ratio 5,81 kg/hp.

540i xDrive Touring G30: 250 km/h. X4 M40d G02: 250 km/h.