sentences:  All "RS" cars pioneer some of Audi's latest and most advanced technology and engineering prowess, therefore, "RS" cars could be described as "halo vehicles".Audi RS cars are some of the most powerful vehicles ever offered by Audi as well as R8.Audi "RS 6" (5.0 TFSI quattro), for instance, is more powerful than the physically larger Audi S8 (5.2 FSI quattro) However, the 2012 — 2015 Audi "S8" shares the same engine as the 2013 — ... Audi "RS 6" and Audi RS7, albeit in a lower state of tune, while for the 2016 — 2017 model years, the Audi S8 plus features an uprated engine with the same output as the smaller RS 6 and RS7.