( http://www.TFLcar.com ) The new BMW 535i has almost always been the benchmark for all other mid-sized luxury sedans. But for 2012 the all new Audi A6 is taking direct aim at the BMW buyer as well as the 535i. The Audi brings to the table a 310 HP supercharged powerplant, an 8 speed automatic transmission and of course Quattro all-wheel-drive. But to not to be outdone the BMW has all of the same stuff but instead of a supercharged engine it comes with a turbo. So which one is the better car?