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AP7BEVvsB540iPetrol
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  • PerformancePerformance0-100, top speed
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  • SpecsP7 · 540i

Xpeng P7 vs BMW 540i G30: 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 · 2020 vs 2018 · Methodology
XpengBEVFaster

P7

424 hp · 655 Nm · 2,040 kg · 2020

VS
BMWPetrol

540i G30

340 hp · 450 Nm · 1,595 kg · 2018

Result · 0–100 km/h

AXpeng P7

4.21 s

Gap0.99 sin favour of P7
BBMW 540i G30

5.20 s

Summary · Caralogy simulation
MeasureP7540i G30Gap
0–100 km/h4.21 s5.20 s0.99 s · P7
400 m standing start12.55 s13.32 s0.77 s · P7
1,000 m standing start25.25 s23.90 s1.35 s · 540i G30
Top speed (electronically limited)170 km/h250 km/h80 km/h · 540i G30
Power-to-weight ratio4.81 kg/hp4.69 kg/hpbetter ratio · 540i G30

Watch the race

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

XpengBEVP7
Speed
0km/h
Timer
0,00s
Distance
0m
BMWPetrol540i G30
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.
StageP7540i G30
0–30 km/h1.11 s1.42 s
0–50 km/h1.85 s2.36 s
0–80 km/h3.09 s3.85 s
0–100 km/h4.21 s5.20 s
0–120 km/h5.64 s6.76 s
0–160 km/h9.67 s11.00 s
0–200 km/h-17.43 s
400 m standing start12.55 s13.32 s
1,000 m standing start25.25 s23.90 s
Top speed limited170 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.

Xpeng

P7

4,81kg/hpcompensated by −445 kg
CharacteristicValueDetail
Power424 hpDual Permanent Magnet Synchronous Motor
Torque655 Nm
Weight2 040 kgmanufacturer kerb weight
DrivetrainIntegrale (AWD)
GearboxSingle-speed fixed gear
BMW

540i G30

4,69kg/hpratio better by 0,12 kg/hp
CharacteristicValueDetail
Power340 hp6 cyl
Torque450 Nm
Weight1 595 kgmanufacturer kerb weight
DrivetrainPropulsion
Gearbox8-speed Steptronic

The start: 0 to 100 km/h

Off the line, the P7 hits 100 km/h in 4.22 s versus 5.20 s for the 540i. The instant torque of 655 Nm from the electric motor makes the difference. At this point, the P7 leads by 0.99 s and sits roughly 12 m ahead.

From 100 km/h to 400 metres

At 200 metres, the P7 is doing 147 km/h against 141 km/h for the 540i. The gap is 0.69 s. The challenger starts to claw back ground.

At 400 metres standing start, the P7 crosses the line in 12.54 s versus 13.32 s. The 0.77 s gap represents roughly 37 m of track - a gap visible to the naked eye.

Beyond 400 metres: top speed comes into play

Past 400 metres, the situation changes. The P7 maxes out at 170 km/h while the 540i keeps accelerating towards 250 (i.e. 155 mph - industry threshold) km/h. At 600 metres, the gap has dropped to 0.37 s.

Around 707 metres, both vehicles are level. This is the inversion point: the 540i overcomes its launch deficit thanks to a 80 km/h higher top speed.

At 1,000 metres, the 540i finishes in 23.90 s versus 25.24 s. The 1.35 s delta in favour of the 540i shows that top speed makes a clear difference.

What the numbers don’t tell you

The P7 features all-wheel drive (AWD) against the 540i’s RWD. At low speeds (0-30, 0-50, 0-80 km/h), AWD doubles the driven contact area: all four wheels transmit torque to the road, virtually eliminating wheelspin at launch. This traction advantage is decisive in the range where the motor delivers peak torque, before power and aerodynamics take over.

Both rivals are electronically governed, but not at the same level: the P7 is capped at 170 km/h, the 540i at 250 (i.e. 155 mph - industry threshold) 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 7.68 seconds. The 0.99 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, P7 wins (4,21 s vs 5,20 s).

P7 goes from 0 to 100 km/h in 4,21 seconds (calibrated simulation).

P7: 424 hp, ratio 4,81 kg/hp. 540i G30: 340 hp, ratio 4,69 kg/hp.

P7: 170 km/h. 540i G30: 250 km/h.