Team Rosberg returned to the series after one-year absence and thus switched to Audi Sport machinery.
[3] Team Joest left the series so they could concentrate on the development of the Audi R10 diesel sports car.
[4] F1 team boss Colin Kolles would enter the championship with two two year old Audi A4s run under the Futurecom TME banner.
Reigning champion Gary Paffett left the DTM to focus on his F1 test driver role at McLaren Mercedes with hopes of a race seat in 2007.
[5] Heinz-Harald Frentzen switched from Opel to Audi to replace Allan McNish who left the series to focus on Endurance racing.
[5] Vanina Ickx and Olivier Tielemans joined the DTM with Futurecom TME after spending the previous year in BELCAR and 3000 Pro Series respectively.