Porsche 911 Carrera S 991.1 vs Bmw 540i G30 : which one is faster?

The launch: 0 to 100 km/h

Off the line, the 911 Carrera S hits 100 km/h in 4.44 s versus 5.21 s for the Bmw 540i. At this point, the 911 Carrera S leads by 0.77 s and sits roughly 9 m ahead.

From 100 km/h to 400 metres

At 200 metres, the 911 Carrera S is doing 154 km/h against 141 km/h for the Bmw 540i. The gap is 0.66 s. The challenger starts to claw back ground.

At 400 metres standing start, the 911 Carrera S crosses the line in 12.30 s versus 13.36 s. The 1.07 s gap represents roughly 51 m of track — a gap visible to the naked eye.

Beyond 400 metres: top speed comes into play

Past 400 metres, the 911 Carrera S continues to build its lead. At 600 metres, it runs at 216 km/h versus 198 km/h. At 1,000 metres, the 911 Carrera S finishes in 21.94 s versus 23.97 s, with a 2.03 s lead.

What the numbers don’t tell you

Both rivals are electronically governed, but not at the same level: the 911 Carrera S is capped at 303 km/h, the Bmw 540i at 250 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 (3.44 kg/hp vs 4.69 kg/hp) and transmission (Manual vs Automatic).

In European road use (130 km/h max), both vehicles reach the legal speed limit in under 7.71 seconds. The 0.77 s difference in 0 to 100 km/h is mostly felt in motorway merging and overtaking.