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AXMPHEVvsBPanameraPetrol
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  • SpecsXM · Panamera

BMW XM 50e G09 vs Porsche Panamera 971: 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 · 2024 vs 2018
BMWPHEV

XM 50e G09

476 hp · 700 Nm · 2,620 kg · 2024

VS
PorschePetrol

Panamera 971

335 hp · 449 Nm · 1,815 kg · 2018

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.

XM 50e G09Panamera 971
0–100 km/h5,19 s−0,08 s5,28 s
400 m standing start13,44 s−0,14 s13,58 s
1,000 m standing start24,30 s−0,36 s24,66 s
Top speed (electronically limited)250 km/h264 km/h−14 km/h
Power-to-weight ratio5,50 kg/hp5,42 kg/hpbetter ratio

Watch the race

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

BMWPHEVXM 50e G09
Speed
0km/h
Timer
0,00s
Distance
0m
PorschePetrolPanamera 971
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.

PalierXM 50e G09Panamera 971
0–30 km/h1,39 s1,40 stight gap
0–50 km/h2,33 s2,30 stight gap
0–80 km/h3,82 s3,87 stight gap
0–100 km/h5,19 s5,28 stight gap
0–120 km/h6,88 s7,13 s
0–160 km/h11,59 s12,03 s
0–200 km/h18,84 s20,06 s
400 m standing start13,44 s13,58 stight gap
1,000 m standing start24,30 s24,66 s
Top speed limited250 km/h264 km/h

Under the bonnet

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

BMW

XM 50e G09

5,50kg/hpcompensated by −805 kg
CharacteristicValueDetail
Power476 hp4 cyl
Torque700 Nm
Weight2 620 kgmanufacturer kerb weight
DrivetrainIntegrale (AWD)
GearboxEight-speed M Steptronic transmission
Porsche

Panamera 971

5,42kg/hpratio better by 0,09 kg/hp
CharacteristicValueDetail
Power335 hpV6
Torque449 Nm
Weight1 815 kgmanufacturer kerb weight
DrivetrainPropulsion
GearboxDUAL_CLUTCH

The start: 0 to 100 km/h

Off the line, the XM 50e hits 100 km/h in 5.19 s versus 5.28 s for the Panamera. The instant torque of 700 Nm from the electric motor makes the difference. The 0.08 s gap is negligible: both vehicles are neck and neck.

From 100 km/h to 400 metres

At 200 metres, the XM 50e is doing 139 km/h against 136 km/h for the Panamera. The gap is 0.06 s. The gap remains stable from the start.

At 400 metres standing start, the XM 50e crosses the line in 13.44 s versus 13.57 s. The 0.14 s gap represents roughly 6 m of track - barely a car length.

Beyond 400 metres: top speed comes into play

Past 400 metres, the XM 50e continues to build its lead. At 600 metres, it runs at 193 km/h versus 190 km/h. At 1,000 metres, the XM 50e finishes in 24.30 s versus 24.66 s, with a 0.36 s lead. Both vehicles have similar top speeds (250 (i.e. 155 mph - industry threshold) vs 264 km/h), preventing any comeback.

What the numbers don’t tell you

The XM 50e features all-wheel drive (AWD) against the Panamera’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 XM 50e is capped at 250 (i.e. 155 mph - industry threshold) km/h, the Panamera at 264 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 8.22 seconds. The 0.08 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, XM 50e G09 and Panamera 971 are neck and neck (5,19 s vs 5,28 s, no significant gap).

XM 50e G09 goes from 0 to 100 km/h in 5,19 seconds (calibrated simulation).

XM 50e G09: 476 hp, ratio 5,50 kg/hp. Panamera 971: 335 hp, ratio 5,42 kg/hp.

XM 50e G09: 250 km/h. Panamera 971: 264 km/h.