Schumi did not disappoint us - Daimler CEO

Daimler chairman Dieter Zetsche, the head of Mercedes-Benz, insists the low-key return of Michael Schumacher has not been a disappointment for Mercedes GP.

Schumacher, 41, finished ninth in the 2010 Drivers' Championship while compatriot Sebastian Vettel, from Red Bull, was crowned the youngest World Champion.

Schumacher's Mercedes team-mate Nico Rosberg finished seventh with 142 points, nearly double Schumacher's tally of 72.

But Zetsche has insisted the former Champion's return to Formula One racing has not disappointed the boss of the German car manufacturers.

"He has not disappointed us," the 57-year-old Zetsche told German daily Bild.

"We need to provide him with the car that will allow him to show his capabilities."

Having ended his three-year retirement to return to Formula One with Mercedes GP, Schumacher finished fourth on two occasions this past season.