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Ai4vsBG9BEV
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  • Specsi4 · G9

BMW i4 M50 xDrive G26 vs Xpeng G9: 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 · 2024 vs 2022 · Methodology
BMWBEVFaster

i4 M50 xDrive G26

544 hp · 795 Nm · 2,215 kg · 2024

VS
XpengBEV

G9

308 hp · 430 Nm · 2,210 kg · 2022

Result · 0–100 km/h

ABMW i4 M50 xDrive G26

3.92 s

Gap4.59 sin favour of i4 M50 xDrive
BXpeng G9

8.51 s

Summary · Caralogy simulation
Measurei4 M50 xDrive G26G9Gap
0–100 km/h3.92 s8.51 s4.59 s · i4 M50 xDrive G26
400 m standing start12.01 s16.32 s4.31 s · i4 M50 xDrive G26
1,000 m standing start21.97 s28.71 s6.74 s · i4 M50 xDrive G26
Top speed (electronically limited)225 km/h200 km/h25 km/h · i4 M50 xDrive G26
Power-to-weight ratio4.07 kg/hp7.18 kg/hpbetter ratio · i4 M50 xDrive G26

Watch the race

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

BMWBEVi4 M50 xDrive G26
Speed
0km/h
Timer
0,00s
Distance
0m
XpengBEVG9
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.
Stagei4 M50 xDrive G26G9
0–30 km/h1.13 s2.41 s
0–50 km/h1.89 s4.03 s
0–80 km/h3.04 s6.49 s
0–100 km/h3.92 s8.51 s
0–120 km/h5.04 s11.09 s
0–160 km/h8.35 s18.51 s
0–200 km/h13.16 s31.05 s
400 m standing start12.01 s16.32 s
1,000 m standing start21.97 s28.71 s
Top speed225 km/h200 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

i4 M50 xDrive G26

4,07kg/hpratio better by 3,10 kg/hp
CharacteristicValueDetail
Power544 hpPending
Torque795 Nm
Weight2 215 kgmanufacturer kerb weight
DrivetrainIntegrale (AWD)
GearboxAutomatic transmission, single-speed with fixed ratio
Xpeng

G9

7,18kg/hp
CharacteristicValueDetail
Power308 hpPermanent Magnet Synchronous Motor
Torque430 Nm
Weight2 210 kgmanufacturer kerb weight
DrivetrainPropulsion
GearboxSingle-speed fixed gear

The start: 0 to 100 km/h

Off the line, the i4 M50 xDrive hits 100 km/h in 3.92 s versus 8.51 s for the G9. At this point, the i4 M50 xDrive leads by 4.59 s and sits roughly 30 m ahead.

From 100 km/h to 400 metres

At 200 metres, the i4 M50 xDrive is doing 155 km/h against 120 km/h for the G9. The gap is 3.13 s. The challenger starts to claw back ground.

At 400 metres standing start, the i4 M50 xDrive crosses the line in 12.01 s versus 16.32 s. The 4.31 s gap represents roughly 166 m of track - a gap visible to the naked eye.

Beyond 400 metres: top speed comes into play

Past 400 metres, the i4 M50 xDrive continues to build its lead. At 600 metres, it runs at 216 km/h versus 169 km/h. At 1,000 metres, the i4 M50 xDrive finishes in 21.97 s versus 28.71 s, with a 6.74 s lead.

What the numbers don’t tell you

The i4 M50 xDrive features all-wheel drive (AWD) against the G9’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 i4 M50 xDrive is capped at 225 km/h, the G9 at 200 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.

With two electric powertrains, the difference comes down to power-to-weight ratio (4.07 kg/hp vs 7.18 kg/hp) and transmission (Automatic vs Automatic).

In European road use (130 km/h max), both vehicles reach the legal speed limit in under 12.63 seconds. The 4.59 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, i4 M50 xDrive G26 wins (3,92 s vs 8,51 s).

i4 M50 xDrive G26 goes from 0 to 100 km/h in 3,92 seconds (calibrated simulation).

i4 M50 xDrive G26: 544 hp, ratio 4,07 kg/hp. G9: 308 hp, ratio 7,18 kg/hp.

i4 M50 xDrive G26: 225 km/h. G9: 200 km/h.