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AM850iPetrolvsBP7BEV
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  • PerformancePerformance0-100, top speed
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  • SpecsM850i · P7

BMW M850i xDrive Gran Coupe G15 vs Xpeng P7: 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.

limousine · 2021 vs 2020 · Methodology
BMWPetrolFaster

M850i xDrive Gran Coupe G15

530 hp · 750 Nm · 2,010 kg · 2021

VS
XpengBEV

P7

424 hp · 655 Nm · 2,040 kg · 2020

Result · 0–100 km/h

ABMW M850i xDrive Gran Coupe G15

3.93 s

Gap0.28 sin favour of M850i xDrive Gran Coupe
BXpeng P7

4.21 s

Summary · Caralogy simulation
MeasureM850i xDrive Gran Coupe G15P7Gap
0–100 km/h3.93 s4.21 s0.28 s · M850i xDrive Gran Coupe G15
400 m standing start11.88 s12.55 s0.67 s · M850i xDrive Gran Coupe G15
1,000 m standing start21.34 s25.25 s3.91 s · M850i xDrive Gran Coupe G15
Top speed (electronically limited)250 km/h170 km/h80 km/h · M850i xDrive Gran Coupe G15
Power-to-weight ratio3.79 kg/hp4.81 kg/hpbetter ratio · M850i xDrive Gran Coupe G15

Watch the race

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

BMWPetrolM850i xDrive Gran Coupe G15
Speed
0km/h
Timer
0,00s
Distance
0m
XpengBEVP7
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.
StageM850i xDrive Gran Coupe G15P7
0–30 km/h1.17 s1.11 s · tight gap
0–50 km/h1.92 s1.85 s · tight gap
0–80 km/h3.04 s · tight gap3.09 s
0–100 km/h3.93 s4.21 s
0–120 km/h5.03 s5.64 s
0–160 km/h7.97 s9.67 s
0–200 km/h12.21 s-
400 m standing start11.88 s12.55 s
1,000 m standing start21.34 s25.25 s
Top speed limited250 km/h170 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

M850i xDrive Gran Coupe G15

3,79kg/hpratio better by 1,02 kg/hp
CharacteristicValueDetail
Power530 hp8 cyl
Torque750 Nm
Weight2 010 kgmanufacturer kerb weight
DrivetrainIntegrale (AWD)
Gearbox8-speed Steptronic
Xpeng

P7

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

The start: 0 to 100 km/h

Off the line, the M850i xDrive Gran Coupe hits 100 km/h in 3.93 s versus 4.22 s for the P7. Despite lacking instant torque, 530 hp of power compensates. The 0.28 s gap is negligible: both vehicles are neck and neck.

From 100 km/h to 400 metres

At 200 metres, the M850i xDrive Gran Coupe is doing 159 km/h against 147 km/h for the P7. The gap is 0.26 s. The gap remains stable from the start.

At 400 metres standing start, the M850i xDrive Gran Coupe crosses the line in 11.88 s versus 12.54 s. The 0.66 s gap represents roughly 31 m of track - a gap visible to the naked eye.

Beyond 400 metres: top speed comes into play

Past 400 metres, the M850i xDrive Gran Coupe continues to build its lead. At 600 metres, it runs at 222 km/h versus 170 km/h. At 1,000 metres, the M850i xDrive Gran Coupe finishes in 21.34 s versus 25.24 s, with a 3.91 s lead.

What the numbers don’t tell you

Both rivals are electronically governed, but not at the same level: the M850i xDrive Gran Coupe is capped at 250 (i.e. 155 mph - industry threshold) km/h, the P7 at 170 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 6.49 seconds. The 0.28 s difference in 0 to 100 km/h is mostly felt in motorway merging and overtaking.

Other duels you might be interested in

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Panamera Turbo vs M850i xDrive Gran Coupe

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Model 3 Performance vs P7

Frequently asked questions

Over 0–100 km/h, M850i xDrive Gran Coupe G15 wins (3,93 s vs 4,21 s).

M850i xDrive Gran Coupe G15 goes from 0 to 100 km/h in 3,93 seconds (calibrated simulation).

M850i xDrive Gran Coupe G15: 530 hp, ratio 3,79 kg/hp. P7: 424 hp, ratio 4,81 kg/hp.

M850i xDrive Gran Coupe G15: 250 km/h. P7: 170 km/h.