BMW 440i xDrive Gran Coupe G22 vs Porsche Boxster S: which is truly faster?

Off the line, the Boxster S hits 100 km/h in 4.94 s versus 5.01 s for the 440i xDrive Gran Coupe. The 0.07 s gap is negligible: both vehicles are neck and neck.

At 200 metres, the Boxster S is doing 145 km/h against 140 km/h for the 440i xDrive Gran Coupe. The gap is 0.04 s. The gap remains stable from the start.

At 400 metres standing start, the Boxster S crosses the line in 13.01 s versus 13.21 s. The 0.20 s gap represents roughly 9 m of track - barely a car length.

Past 400 metres, the Boxster S continues to build its lead. At 600 metres, it runs at 202 km/h versus 196 km/h. At 1,000 metres, the Boxster S finishes in 23.47 s versus 23.91 s, with a 0.45 s lead.

The 440i xDrive Gran Coupe features all-wheel drive (AWD) against the Boxster S’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 440i xDrive Gran Coupe is capped at 250 (i.e. 155 mph - industry threshold) km/h, the Boxster S at 279 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 (5.20 kg/hp vs 4.14 kg/hp) and transmission (Automatic vs Unknown).

In European road use (130 km/h max), both vehicles reach the legal speed limit in under 7.59 seconds. The 0.07 s difference in 0 to 100 km/h is mostly felt in motorway merging and overtaking.