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ACayenneHybridvsBX4Petrol
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  • SpecsCayenne · X4

Porsche Cayenne S Hybrid vs BMW X4 M40i G02: 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.

large SUV · 2013 vs 2021 · Methodology
PorscheHybrid

Cayenne S Hybrid

385 hp · 580 Nm · 2,240 kg · 2013

VS
BMWPetrolFaster

X4 M40i G02

360 hp · 500 Nm · 1,865 kg · 2021

Result · 0–100 km/h

APorsche Cayenne S Hybrid

6.29 s

Gap1.42 sin favour of X4 M40i
BBMW X4 M40i G02

4.87 s

Summary · Caralogy simulation
MeasureCayenne S HybridX4 M40i G02Gap
0–100 km/h6.29 s4.87 s1.42 s · X4 M40i G02
400 m standing start14.49 s13.08 s1.41 s · X4 M40i G02
1,000 m standing start26.81 s23.70 s3.11 s · X4 M40i G02
Top speed (electronically limited)228 km/h250 km/h22 km/h · X4 M40i G02
Power-to-weight ratio5.82 kg/hp5.18 kg/hpbetter ratio · X4 M40i G02

Watch the race

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

PorscheHybridCayenne S Hybrid
Speed
0km/h
Timer
0,00s
Distance
0m
BMWPetrolX4 M40i G02
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.
StageCayenne S HybridX4 M40i G02
0–30 km/h1.28 s · tight gap1.33 s
0–50 km/h2.20 s · tight gap2.21 s
0–80 km/h4.28 s3.62 s
0–100 km/h6.29 s4.87 s
0–120 km/h8.60 s6.42 s
0–160 km/h15.88 s10.68 s
0–200 km/h31.45 s17.33 s
400 m standing start14.49 s13.08 s
1,000 m standing start26.81 s23.70 s
Top speed limited228 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.

Porsche

Cayenne S Hybrid

5,82kg/hpcompensated by −375 kg
CharacteristicValueDetail
Power385 hpEngine block and cylinder heads formed in aluminum
Torque580 Nm
Weight2 240 kgmanufacturer kerb weight
DrivetrainIntegrale (AWD)
GearboxUnknown
BMW

X4 M40i G02

5,18kg/hpratio better by 0,64 kg/hp
CharacteristicValueDetail
Power360 hp6 cyl
Torque500 Nm
Weight1 865 kgmanufacturer kerb weight
Drivetrain-
Gearbox8-speed Steptronic

The start: 0 to 100 km/h

Off the line, the X4 M40i hits 100 km/h in 4.87 s versus 6.29 s for the Cayenne S Hybrid. At this point, the X4 M40i leads by 1.42 s and sits roughly 6 m ahead.

From 100 km/h to 400 metres

At 200 metres, the X4 M40i is doing 142 km/h against 125 km/h for the Cayenne S Hybrid. The gap is 0.74 s. The challenger starts to claw back ground.

At 400 metres standing start, the X4 M40i crosses the line in 13.08 s versus 14.49 s. The 1.41 s gap represents roughly 59 m of track - a gap visible to the naked eye.

Beyond 400 metres: top speed comes into play

Past 400 metres, the X4 M40i continues to build its lead. At 600 metres, it runs at 198 km/h versus 171 km/h. At 1,000 metres, the X4 M40i finishes in 23.70 s versus 26.81 s, with a 3.11 s lead.

What the numbers don’t tell you

Both rivals are electronically governed, but not at the same level: the Cayenne S Hybrid is capped at 242 km/h, the X4 M40i 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.

With two combustion powertrains, the difference comes down to power-to-weight ratio (5.82 kg/hp vs 5.18 kg/hp) and transmission (Unknown vs Automatic).

In European road use (130 km/h max), both vehicles reach the legal speed limit in under 10.10 seconds. The 1.42 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, X4 M40i G02 wins (4,87 s vs 6,29 s).

Cayenne S Hybrid goes from 0 to 100 km/h in 6,29 seconds (calibrated simulation).

Cayenne S Hybrid: 385 hp, ratio 5,82 kg/hp. X4 M40i G02: 360 hp, ratio 5,18 kg/hp.

Cayenne S Hybrid: 228 km/h. X4 M40i G02: 250 km/h.