Bmw M340i xDrive G20 vs Porsche Cayman S PDK 987 : 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
CONFIDENCE 91%Reading the duel
At 400 m, Bmw M340i xDrive leads by 0.13 s. At 1 000 m, Porsche Cayman S PDK takes the lead by 0.09 s.
Calibrated physics simulation: SCx via VMax, power curves, Crr via WLTP, drivetrain losses. Manufacturer 0-100 is the calibration target. Confidence 91 %.
Bmw M340i xDrive vs Cayman S PDK: chronicle of a drag race at 286 km/h
The launch: 0 to 100 km/h
Off the line, the Bmw M340i xDrive hits 100 km/h in 4.32 s versus 4.67 s for the Cayman S PDK. At this point, the Bmw M340i xDrive leads by 0.35 s and sits roughly 10 m ahead.
From 100 km/h to 400 metres
At 200 metres, the Bmw M340i xDrive is doing 147 km/h against 151 km/h for the Cayman S PDK. The gap is 0.27 s. The gap remains stable from the start.
At 400 metres standing start, the Bmw M340i xDrive crosses the line in 12.46 s versus 12.60 s. The 0.13 s gap represents roughly 7 m of track — barely a car length.
Beyond 400 metres: top speed comes into play
Past 400 metres, the situation changes. The Bmw M340i xDrive maxes out at 250 km/h while the Cayman S PDK keeps accelerating towards 286 km/h. At 600 metres, the gap has dropped to 0.03 s.
Around 655 metres, both vehicles are level. This is the inversion point: the Cayman S PDK overcomes its launch deficit thanks to a 36 km/h higher top speed.
At 1,000 metres, the Cayman S PDK finishes in 22.56 s versus 22.65 s. The 0.09 s delta shows an extremely tight race.
What the numbers don’t tell you
Electronically capped at 250 km/h, the Bmw M340i xDrive never reaches its natural aerodynamic ceiling in this duel. That’s not a physical limit of the motor — it’s a deliberate manufacturer decision, typically tied to standard-fit tyre ratings or model-range positioning.
With two combustion powertrains, the difference comes down to power-to-weight ratio (4.77 kg/hp vs 4.24 kg/hp) and transmission (Automatic vs Automatic).
In European road use (130 km/h max), both vehicles reach the legal speed limit in under 6.63 seconds. The 0.35 s difference in 0 to 100 km/h is mostly felt in motorway merging and overtaking.
Bmw M340i xDrive is slightly faster than the Porsche Cayman S PDK to 100 km/h. The edge holds on standing starts but may narrow at higher speeds depending on aerodynamic load.