25 years ago, a TDI in the Audi 100 had its first major appearance. Since then, much has happened, and the former diesels changed into elegant, powerful, sporty drive units. Audi launched the A7 Sportback 3.0 TDI competition on its 25th anniversary with delivers a special edition that presents the state of the art TDI technology. Source: http://autovideoreview.com
