Bmw X5 xDrive45e G05 vs Porsche 718 Cayman GTS : which one is faster?
0-100 km/h, 400 m, 1000 m, top speed — physics simulation calibrated on 7 measures.
Simulation de performance
Race simulation at real speed
0Calibrated physics simulation: SCx via VMax, power curves, Crr via WLTP, drivetrain losses. Manufacturer 0-100 is the calibration target. Confidence 0 %.
Bmw X5 xDrive45e vs 718 Cayman GTS: chronicle of a drag race at 290 km/h
The launch: 0 to 100 km/h
Off the line, the 718 Cayman GTS hits 100 km/h in 4.47 s versus 5.57 s for the Bmw X5 xDrive45e. At this point, the 718 Cayman GTS leads by 1.11 s and sits roughly 5 m ahead.
From 100 km/h to 400 metres
At 200 metres, the 718 Cayman GTS is doing 155 km/h against 131 km/h for the Bmw X5 xDrive45e. The gap is 0.76 s. The challenger starts to claw back ground.
At 400 metres standing start, the 718 Cayman GTS crosses the line in 12.32 s versus 13.86 s. The 1.54 s gap represents roughly 67 m of track — a gap visible to the naked eye.
Beyond 400 metres: top speed comes into play
Past 400 metres, the 718 Cayman GTS continues to build its lead. At 600 metres, it runs at 217 km/h versus 180 km/h. At 1,000 metres, the 718 Cayman GTS finishes in 21.96 s versus 25.56 s, with a 3.60 s lead.
What the numbers don’t tell you
Both rivals are electronically governed, but not at the same level: the Bmw X5 xDrive45e is capped at 235 km/h, the 718 Cayman GTS at 290 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 (6.18 kg/hp vs 3.77 kg/hp) and transmission (Automatic vs Manual).
In European road use (130 km/h max), both vehicles reach the legal speed limit in under 8.88 seconds. The 1.11 s difference in 0 to 100 km/h is mostly felt in motorway merging and overtaking.
Porsche 718 Cayman GTS has a clear edge over the Bmw X5 xDrive45e to 100 km/h. This difference is clearly noticeable in spirited driving and widens on standing starts.