2007 Audi S6 vs. BMW M5, MB E63 AMG - Car and Driver (blog)

Yeah, yeah, that's not quite what Thomas Paine said in 1776. But if he'd been with us while we were putting this threesome through its paces, he might have been tempted to devote his literary talents to something other than revolutionary... Might even have signed up for a blitz course in German, to put a finer point on the subtleties of these four-door bullets. Or the handling demands of the Nürburgring's Nordschleife, the fabled circuit used by German carmakers to test their cars, a track that magnifies any dynamic shortcoming a car may have. In a word, ja. . The names here will be familiar to faithful readers — Audi, Mercedes, and most particularly, the BMW M5. Since the arrival of the first M5 20 years ago, this Bimmer has been the benchmark in luxury sports sedans and as such has... Source: www.caranddriver.com