Audi S3 Sedan vs Renault Megane 4 RS Trophy 300: which is truly faster?

Off the line, the S3 Sedan hits 100 km/h in 4.63 s versus 5.44 s for the Megane 4 RS Trophy 300. At this point, the S3 Sedan leads by 0.81 s and sits roughly 13 m ahead.

At 200 metres, the S3 Sedan is doing 138 km/h against 140 km/h for the Megane 4 RS Trophy 300. The gap is 0.48 s. The challenger starts to claw back ground.

At 400 metres standing start, the S3 Sedan crosses the line in 13.08 s versus 13.56 s. The 0.48 s gap represents roughly 23 m of track - two to three car lengths.

Past 400 metres, the S3 Sedan continues to build its lead. At 600 metres, it runs at 198 km/h versus 195 km/h. At 1,000 metres, the S3 Sedan finishes in 23.69 s versus 24.36 s, with a 0.67 s lead. Both vehicles have similar top speeds (250 (i.e. 155 mph - industry threshold) vs 260 km/h), preventing any comeback.

The S3 Sedan features all-wheel drive (AWD) against the Megane 4 RS Trophy 300’s FWD. 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 S3 Sedan is capped at 250 (i.e. 155 mph - industry threshold) km/h, the Megane 4 RS Trophy 300 at 260 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 (4.61 kg/hp vs 4.83 kg/hp) and transmission (Automatic vs Automatic).

In European road use (130 km/h max), both vehicles reach the legal speed limit in under 7.94 seconds. The 0.81 s difference in 0 to 100 km/h is mostly felt in motorway merging and overtaking.