Coulthard, Ralf secure Mercedes deals

Coulthard, who made his DTM debut last year, will line up on the grid again with Team Mucke Motorsport in the Deutsche Post AMG Mercedes C-Class.

The former grand prix winner scored his best result in the final round of the championship at Shanghai, where he finished in eighth position and posted the fastest lap.

"I'm very pleased to be contesting the DTM series once more in 2011 for Mercedes-Benz," he said. "My year of apprenticeship is over - now I'm looking to make some real progress.

"For me, DTM is also an excellent platform for raising public awareness of the 'Wings for Life' charity. I learnt a lot last year, and have laid good foundations for my second season. After gaining my first DTM point at the final race of the season in Shanghai in 2010, I would like to make my fans happier this season by scoring points more often."

Schumacher, the younger brother of seven-time F1 champion Michael, will be contesting in the German series for fourth consecutive year, having made his debut in 2008.

"I really like being a part of DTM and the Mercedes-Benz family," said the German. "Subtle nuances are important in this hard-fought series. If you can just improve the car's setup by a fraction, then you can reduce your lap times significantly.

"After three years in the DTM and two seasons with the HWA team, I feel at ease in the AMG Mercedes C-Class and I'm ready, together with my new sponsor Salzgitter, to make the next move in my fourth DTM season."