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AG6BEVvsB420iPetrol
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  • PerformancePerformance0-100, top speed
  • ConsumptionConsumptionYearly cost
  • SpecsG6 · 420i

Xpeng G6 vs BMW 420i Steptronic Gran Coupe G22: 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.

family SUV · 2023 vs 2021
XpengBEVFaster

G6

480 hp · 660 Nm · 2,115 kg · 2023

VS
BMWPetrol

420i Steptronic Gran Coupe G22

184 hp · 270 Nm · 1,570 kg · 2021

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.

G6420i Steptronic Gran Coupe G22
0–100 km/h3,80 s−3,82 s7,62 s
400 m standing start12,03 s−3,52 s15,55 s
1,000 m standing start22,89 s−5,45 s28,34 s
Top speed (electronically limited)200 km/h236 km/h−36 km/h
Power-to-weight ratio4,41 kg/hpbetter ratio8,53 kg/hp

Watch the race

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

XpengBEVG6
Speed
0km/h
Timer
0,00s
Distance
0m
BMWPetrol420i Steptronic Gran Coupe G22
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. Winner in green.

PalierG6420i Steptronic Gran Coupe G22
0–30 km/h1,06 s1,65 s
0–50 km/h1,76 s2,79 s
0–80 km/h2,86 s5,28 s
0–100 km/h3,80 s7,62 s
0–120 km/h5,01 s10,51 s
0–160 km/h8,63 s19,00 s
0–200 km/h13,99 s34,76 s
400 m standing start12,03 s15,55 s
1,000 m standing start22,89 s28,34 s
Top speed200 km/h236 km/h

Under the bonnet

Manufacturer technical specifications. The power-to-weight ratio is the key physical factor in a drag race.

Xpeng

G6

4,41kg/hpratio better by 4,13 kg/hp
CharacteristicValueDetail
Power480 hpDual Permanent Magnet Synchronous Motor AWD
Torque660 Nm
Weight2 115 kgmanufacturer kerb weight
DrivetrainIntegrale (AWD)
GearboxSingle-speed fixed gear
BMW

420i Steptronic Gran Coupe G22

8,53kg/hpcompensated by −545 kg
CharacteristicValueDetail
Power184 hp4 cyl
Torque270 Nm
Weight1 570 kgmanufacturer kerb weight
Drivetrain-
Gearbox8-speed Steptronic

The start: 0 to 100 km/h

Off the line, the G6 hits 100 km/h in 3.80 s versus 7.62 s for the 420i Steptronic Gran Coupe. The instant torque of 660 Nm from the electric motor makes the difference. At this point, the G6 leads by 3.82 s and sits roughly 20 m ahead.

From 100 km/h to 400 metres

At 200 metres, the G6 is doing 152 km/h against 118 km/h for the 420i Steptronic Gran Coupe. The gap is 2.31 s. The challenger starts to claw back ground.

At 400 metres standing start, the G6 crosses the line in 12.03 s versus 15.55 s. The 3.52 s gap represents roughly 135 m of track - a gap visible to the naked eye.

Beyond 400 metres: top speed comes into play

Past 400 metres, the G6 continues to build its lead. At 600 metres, it runs at 200 km/h versus 164 km/h. At 1,000 metres, the G6 finishes in 22.89 s versus 28.34 s, with a 5.45 s lead. Despite a higher top speed (236 km/h), the 420i Steptronic Gran Coupe never recovers its launch deficit.

What the numbers don’t tell you

Both rivals are electronically governed, but not at the same level: the G6 is capped at 200 km/h, the 420i Steptronic Gran Coupe at 236 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 12.25 seconds. The 3.82 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, G6 wins (3,80 s vs 7,62 s).

G6 goes from 0 to 100 km/h in 3,80 seconds (calibrated simulation).

G6: 480 hp, ratio 4,41 kg/hp. 420i Steptronic Gran Coupe G22: 184 hp, ratio 8,53 kg/hp.

G6: 200 km/h. 420i Steptronic Gran Coupe G22: 236 km/h.