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%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 283 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 4.83 s for the Cayman S (PDK). At this point, the Bmw M340i xDrive leads by 0.51 s and sits roughly 11 m ahead.
From 100 km/h to 400 metres
At 200 metres, the Bmw M340i xDrive is doing 147 km/h against 149 km/h for the Cayman S (PDK). The gap is 0.40 s. The challenger starts to claw back ground.
At 400 metres standing start, the Bmw M340i xDrive crosses the line in 12.46 s versus 12.79 s. The 0.32 s gap represents roughly 17 m of track — two to three car lengths.
Beyond 400 metres: top speed comes into play
Past 400 metres, the gap narrows. The Bmw M340i xDrive maxes out at 250 km/h while the Cayman S (PDK) keeps accelerating towards 283 km/h. At 600 metres, the gap has dropped to 0.26 s.
At 1,000 metres, the Bmw M340i xDrive finishes in 22.65 s versus 22.86 s, with just 0.22 s to spare. The Cayman S (PDK) fails to fully close the launch gap.
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 4.30 kg/hp) and transmission (Automatic vs Automatic).
In European road use (130 km/h max), both vehicles reach the legal speed limit in under 6.90 seconds. The 0.51 s difference in 0 to 100 km/h is mostly felt in motorway merging and overtaking.
Bmw M340i xDrive has a clear edge over the Porsche Cayman S (PDK) to 100 km/h. This difference is clearly noticeable in spirited driving and widens on standing starts.