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ACayennevsBX4Petrol
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  • PerformancePerformance0-100, top speed
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  • SpecsCayenne · X4

Porsche Cayenne Turbo Coupe 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 · 2020 vs 2020 · Methodology
PorschePetrolFaster

Cayenne Turbo Coupe

520 hp · 750 Nm · 2,279 kg · 2020

VS
BMWPetrol

X4 M40i G02

360 hp · 500 Nm · 1,865 kg · 2020

Result · 0–100 km/h

APorsche Cayenne Turbo Coupe

3.84 s

Gap0.91 sin favour of Cayenne Turbo Coupe
BBMW X4 M40i G02

4.75 s

Summary · Caralogy simulation
MeasureCayenne Turbo CoupeX4 M40i G02Gap
0–100 km/h3.84 s4.75 s0.91 s · Cayenne Turbo Coupe
400 m standing start12.08 s12.99 s0.91 s · Cayenne Turbo Coupe
1,000 m standing start22.23 s23.62 s1.39 s · Cayenne Turbo Coupe
Top speed (electronically limited)285 km/h250 km/h35 km/h · Cayenne Turbo Coupe
Power-to-weight ratio4.38 kg/hp5.18 kg/hpbetter ratio · Cayenne Turbo Coupe

Watch the race

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

PorschePetrolCayenne Turbo Coupe
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 Turbo CoupeX4 M40i G02
0–30 km/h0.91 s1.25 s
0–50 km/h1.52 s2.08 s
0–80 km/h2.72 s3.50 s
0–100 km/h3.84 s4.75 s
0–120 km/h5.17 s6.31 s
0–160 km/h8.95 s10.60 s
0–200 km/h14.45 s17.30 s
400 m standing start12.08 s12.99 s
1,000 m standing start22.23 s23.62 s
Top speed limited285 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 Turbo Coupe

4,38kg/hpratio better by 0,80 kg/hp
CharacteristicValueDetail
Power520 hpV8
Torque750 Nm
Weight2 279 kgmanufacturer kerb weight
DrivetrainIntegrale (AWD)
GearboxTORQUE_CONVERTER
BMW

X4 M40i G02

5,18kg/hpcompensated by −414 kg
CharacteristicValueDetail
Power360 hp6 cyl
Torque500 Nm
Weight1 865 kgmanufacturer kerb weight
DrivetrainIntegrale (AWD)
Gearbox8-speed Steptronic

The start: 0 to 100 km/h

Off the line, the Cayenne Turbo Coupe hits 100 km/h in 3.84 s versus 4.75 s for the X4 M40i. At this point, the Cayenne Turbo Coupe leads by 0.91 s and sits roughly 12 m ahead.

From 100 km/h to 400 metres

At 200 metres, the Cayenne Turbo Coupe is doing 150 km/h against 142 km/h for the X4 M40i. The gap is 0.71 s. The challenger starts to claw back ground.

At 400 metres standing start, the Cayenne Turbo Coupe crosses the line in 12.07 s versus 12.98 s. The 0.91 s gap represents roughly 44 m of track - a gap visible to the naked eye.

Beyond 400 metres: top speed comes into play

Past 400 metres, the Cayenne Turbo Coupe continues to build its lead. At 600 metres, it runs at 206 km/h versus 198 km/h. At 1,000 metres, the Cayenne Turbo Coupe finishes in 22.22 s versus 23.62 s, with a 1.39 s lead.

What the numbers don’t tell you

Both rivals are electronically governed, but not at the same level: the Cayenne Turbo Coupe is capped at 285 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 (4.38 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 7.22 seconds. The 0.91 s difference in 0 to 100 km/h is mostly felt in motorway merging and overtaking.

Compare with other alternatives

Swap one of the two models to explore an equivalent duel in the same segment.

Instead of Cayenne Turbo Coupe
Audi SQ5 SUVAudi SQ5 Sportback

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Frequently asked questions

Over 0–100 km/h, Cayenne Turbo Coupe wins (3,84 s vs 4,75 s).

Cayenne Turbo Coupe goes from 0 to 100 km/h in 3,84 seconds (calibrated simulation).

Cayenne Turbo Coupe: 520 hp, ratio 4,38 kg/hp. X4 M40i G02: 360 hp, ratio 5,18 kg/hp.

Cayenne Turbo Coupe: 285 km/h. X4 M40i G02: 250 km/h.