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BMW X7 xDrive50i G07 vs BMW X3 M40i G01: 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.

luxury SUV · 2018 vs 2018 · Methodology
BMWPetrol

X7 xDrive50i G07

462 hp · 650 Nm · 2,460 kg · 2018

VS
BMWPetrolFaster

X3 M40i G01

354 hp · 500 Nm · 1,810 kg · 2018

Result · 0–100 km/h

ABMW X7 xDrive50i G07

5.33 s

Gap0.57 sin favour of X3 M40i
BBMW X3 M40i G01

4.76 s

Summary · Caralogy simulation
MeasureX7 xDrive50i G07X3 M40i G01Gap
0–100 km/h5.33 s4.76 s0.57 s · X3 M40i G01
400 m standing start13.57 s13.02 s0.55 s · X3 M40i G01
1,000 m standing start24.64 s23.71 s0.93 s · X3 M40i G01
Top speed (electronically limited)250 km/h250 km/hSame
Power-to-weight ratio5.32 kg/hp5.11 kg/hpbetter ratio · X3 M40i G01

Watch the race

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

BMWPetrolX7 xDrive50i G07
Speed
0km/h
Timer
0,00s
Distance
0m
BMWPetrolX3 M40i G01
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.
StageX7 xDrive50i G07X3 M40i G01
0–30 km/h1.39 s1.28 s · tight gap
0–50 km/h2.29 s2.13 s
0–80 km/h3.92 s3.52 s
0–100 km/h5.33 s4.76 s
0–120 km/h7.08 s6.33 s
0–160 km/h12.00 s10.65 s
0–200 km/h19.96 s17.58 s
400 m standing start13.57 s13.02 s
1,000 m standing start24.64 s23.71 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

X7 xDrive50i G07

5,32kg/hpcompensated by −650 kg
CharacteristicValueDetail
Power462 hp8 cyl
Torque650 Nm
Weight2 460 kgmanufacturer kerb weight
DrivetrainIntegrale (AWD)
GearboxEight-speed Steptronic transmission
BMW

X3 M40i G01

5,11kg/hpratio better by 0,21 kg/hp
CharacteristicValueDetail
Power354 hp6 cyl
Torque500 Nm
Weight1 810 kgmanufacturer kerb weight
DrivetrainIntegrale (AWD)
Gearbox8-speed Steptronic

The start: 0 to 100 km/h

Off the line, the X3 M40i hits 100 km/h in 4.76 s versus 5.33 s for the X7 xDrive50i. At this point, the X3 M40i leads by 0.57 s and sits roughly 6 m ahead.

From 100 km/h to 400 metres

At 200 metres, the X3 M40i is doing 142 km/h against 137 km/h for the X7 xDrive50i. The gap is 0.38 s. The challenger starts to claw back ground.

At 400 metres standing start, the X3 M40i crosses the line in 13.01 s versus 13.57 s. The 0.56 s gap represents roughly 26 m of track - two to three car lengths.

Beyond 400 metres: top speed comes into play

Past 400 metres, the X3 M40i continues to build its lead. At 600 metres, it runs at 197 km/h versus 190 km/h. At 1,000 metres, the X3 M40i finishes in 23.71 s versus 24.64 s, with a 0.93 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 X7 xDrive50i and the X3 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 (5.32 kg/hp vs 5.11 kg/hp) and transmission (Automatic vs Automatic).

In European road use (130 km/h max), both vehicles reach the legal speed limit in under 8.16 seconds. The 0.57 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 X7 xDrive50i G07
Audi SQ5 Sportback

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Frequently asked questions

Over 0–100 km/h, X3 M40i G01 wins (4,76 s vs 5,33 s).

X7 xDrive50i G07 goes from 0 to 100 km/h in 5,33 seconds (calibrated simulation).

X7 xDrive50i G07: 462 hp, ratio 5,32 kg/hp. X3 M40i G01: 354 hp, ratio 5,11 kg/hp.

X7 xDrive50i G07: 250 km/h. X3 M40i G01: 250 km/h.