2010 Audi A6 3.0T Quattro vs. 2011 BMW 535i, 2011 Infiniti M37 - Car and Driver

At the outbreak of World War I, David Lloyd George—British statesman, prime minister, and all-around champion of the underdog—was annoyed by the then-popular refrain, “The war that will end war. ” Instead, he said, “This war, like the next war, is a war to end war. And so go the wars among the $50,000 luxo-sports sedans, a burgeoning and combative niche whose inhabitants seemingly engage in almost monthly one-upmanship. In that battle, an Audi A6 3. 0T Quattro prevailed, followed not far behind by a BMW 535i and an Infiniti M45. Since then, the would-be Audi slayers have comprehensively renovated their products, so another war—this one surely a war to end... Naturally, the Audi returned, as champions will, shod with 19-inch Michelin Pilot Sport PS2s rather than the previous Pirelli P Zero Rossos. Several key dimensions are up, notably wheelbase (3. 2 inches), length (2. 0 inches), and rear track (1. 9 inches). Power and torque remain static, but the lone-turbo layout has allowed BMW to revert to a single exhaust stream wending its way through a single catalytic converter. Source: www.caranddriver.com