AUBURN HILLS, MI – Audi of America Inc. has launched its new diesel-specific media Web site: Audi has been a leader in diesel technology since the debut of the first Turbo Direct Injection (TDI) diesel engine in 1989. Not long after Audi went undefeated in 2006 with its R10 TDI prototype race car, including the 24 Hours of Le Mans, the first U.S-bound production diesel model was announced: the Audi Q7 3.0 TDI.