The Audi R10 TDI started seven-times in the American Le Mans Series, and took the checkered flag as winner on each occasion. Dindo Capello and Allan McNish wrapped up the Drivers’ Championship with a couple of races in hand. Audi also won the Team and Manufacturers’ Championships. Every title in the “top flight” LM P1 class went to Ingolstadt for the seventh time in succession.
In the process of dominating the 2006 American Le Mans Series, Audi’s life was made artificially difficult. The regulations were changed four-times during the season to the benefit of the petrol powered competitors. Even with 60 kilograms less weight, larger air-intake restrictors, bigger fuel tanks and the possibility to refuel faster didn't help the conventional sportscars: The Audi R10 TDI remained the first Le Mans Prototype in history to go unbeaten in its debut season, even though it was no longer the fastest car as result of the regulation changes.
The success story of the new Audi R10 TDI had already started at the end of March when Capello, Kristensen and McNish won the 12-hour race at Sebring (Florida), and therefore scored the first win for a diesel sportscar in an important international race.