Bmw M340i xDrive G20 vs Porsche Boxster S Black Edition 981 : 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 Boxster S Black Edition: chronicle of a drag race at 263 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 4.98 s for the Boxster S Black Edition. At this point, the Bmw M340i xDrive leads by 0.66 s and sits roughly 12 m ahead.
From 100 km/h to 400 metres
At 200 metres, the Bmw M340i xDrive is doing 147 km/h against 145 km/h for the Boxster S Black Edition. The gap is 0.51 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 13.03 s. The 0.56 s gap represents roughly 28 m of track — two to three car lengths.
Beyond 400 metres: top speed comes into play
Past 400 metres, the Bmw M340i xDrive continues to build its lead. At 600 metres, it runs at 206 km/h versus 202 km/h. At 1,000 metres, the Bmw M340i xDrive finishes in 22.65 s versus 23.47 s, with a 0.82 s lead. Both vehicles have similar top speeds (250 vs 263 km/h), preventing any comeback.
What the numbers don’t tell you
The Bmw M340i xDrive features all-wheel drive (AWD) against the Boxster S Black Edition’s RWD. At low speeds (0-30, 0-50, 0-80 km/h), AWD doubles the driven contact area: all four wheels transmit torque to the road, virtually eliminating wheelspin at launch. This traction advantage is decisive in the range where the motor delivers peak torque, before power and aerodynamics take over.
Both rivals are electronically governed, but not at the same level: the Bmw M340i xDrive is capped at 250 km/h, the Boxster S Black Edition at 275 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 (4.77 kg/hp vs 4.18 kg/hp) and transmission (Automatic vs Automatic).
In European road use (130 km/h max), both vehicles reach the legal speed limit in under 7.25 seconds. The 0.66 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 Boxster S Black Edition to 100 km/h. This difference is clearly noticeable in spirited driving and widens on standing starts.