The A6 is brimming with amenities and competes with such luxury sedans as the Cadillac Catera, Mercedes Benz C280, Lexus GS 300 and Infiniti I30t -- all of which start in the $32,000 to $36,000 range. The A6 gleams from one end to the other, exuding the assured air of a gem whose every detail has received a thorough polishing. And it provides a comforting sense of its well-earned status as a truly high-class automobile. Audi hopes that the A6 can lure buyers who would like to pamper themselves with the plush appointments of higher-end luxury cars like the BMW 5 Series and Mercedes-Benz E-Class, but can't quite afford the price range of those cars.