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Home›Duel›BMW X3 vs Porsche Cayenne

Performance comparison

BMW X3 M40i G01 vs Porsche Cayenne Diesel 958.2: 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.

BMWPetrolFaster

X3 M40i G01

360 hp · 500 Nm · 1,870 kg · 2021

VS
PorscheDiesel

Cayenne Diesel 958.2

262 hp · 580 Nm · 2,110 kg · 2015

MotorwayRange & chargingPerformance0-100, top speedConsumptionAnnual TCO

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.

X3 M40i G01Cayenne Diesel 958.2
0–100 km/h4,74 s−2,38 s7,11 s
400 m standing start12,98 s−2,24 s15,22 s
1,000 m standing start23,62 s−4,56 s28,18 s
Top speed (electronically limited)250 km/h+33 km/h217 km/h
Power-to-weight ratio5,19 kg/hpbetter ratio8,05 kg/hp

Watch the race

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

BMWPetrolX3 M40i G01
Speed
0km/h
Timer
0,00s
Distance
0m
PorscheDieselCayenne Diesel 958.2
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.

PalierX3 M40i G01Cayenne Diesel 958.2
0–30 km/h1,26 s1,41 s
0–50 km/h2,08 s2,51 s
0–80 km/h3,49 s4,90 s
0–100 km/h4,74 s7,11 s
0–120 km/h6,30 s10,08 s
0–160 km/h10,59 s19,05 s
0–200 km/h17,32 s39,76 s
400 m standing start12,98 s15,22 s
1,000 m standing start23,62 s28,18 s
Top speed limited250 km/h217 km/h

Under the bonnet

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

BMW

X3 M40i G01

5,19kg/hpratio better by 2,86 kg/hp
CharacteristicValueDetail
Power360 hp6 cyl
Torque500 Nm
Weight1 870 kgmanufacturer kerb weight
DrivetrainIntegrale (AWD)
Gearbox8-speed Steptronic
Porsche

Cayenne Diesel 958.2

8,05kg/hpcompensated by −240 kg
CharacteristicValueDetail
Power262 hpV6
Torque580 Nm
Weight2 110 kgmanufacturer kerb weight
DrivetrainIntegrale (AWD)
GearboxTORQUE_CONVERTER

The start: 0 to 100 km/h

Off the line, the Bmw X3 M40i hits 100 km/h in 4.74 s versus 7.11 s for the Cayenne Diesel. At this point, the Bmw X3 M40i leads by 2.38 s and sits roughly 13 m ahead.

From 100 km/h to 400 metres

At 200 metres, the Bmw X3 M40i is doing 142 km/h against 118 km/h for the Cayenne Diesel. The gap is 1.31 s. The challenger starts to claw back ground.

At 400 metres standing start, the Bmw X3 M40i crosses the line in 12.98 s versus 15.22 s. The 2.24 s gap represents roughly 88 m of track — a gap visible to the naked eye.

Beyond 400 metres: top speed comes into play

Past 400 metres, the Bmw X3 M40i continues to build its lead. At 600 metres, it runs at 198 km/h versus 163 km/h. At 1,000 metres, the Bmw X3 M40i finishes in 23.62 s versus 28.17 s, with a 4.56 s lead.

What the numbers don’t tell you

Both rivals are electronically governed, but not at the same level: the Bmw X3 M40i is capped at 250 (i.e. 155 mph — industry threshold) km/h, the Cayenne Diesel at 217 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 (5.19 kg/hp vs 8.05 kg/hp) and transmission (Automatic vs Unknown).

In European road use (130 km/h max), both vehicles reach the legal speed limit in under 11.83 seconds. The 2.38 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 X3 M40i G01
Porsche Cayenne GTSFord Explorer ST 400Audi SQ5 Sportback
Instead of Cayenne Diesel 958.2
Bmw 540i xDrive TouringAudi A6 Avant TDI quattro S tronic 220 kWBmw 540d xDrive Touring

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Frequently asked questions

Sur 0–100 km/h, X3 M40i G01 gagne (4,74 s vs 7,11 s).

X3 M40i G01 passe de 0 à 100 km/h en 4,74 secondes (simulation calibrée).

X3 M40i G01 : 360 hp, ratio 5,19 kg/hp. Cayenne Diesel 958.2 : 262 hp, ratio 8,05 kg/hp.

X3 M40i G01 : 250 km/h. Cayenne Diesel 958.2 : 217 km/h.