Mercedes motorsport boss Norbert Haug says the German car marker was delighted with the success of the Brawn GP team this season.
The British squad won both the drivers' and the constructors' championships on Sunday using a Mercedes engine, after securing a last-minute deal last year when Honda decided to leave Formula 1.
Despite that, the Mercedes-powered team has gone on to win both titles, while the German manufacturer has won ten races so far thanks to its partnership with Brawn and McLaren.
"It's very pleasing, I'm very happy for the guys, it's a fairy tale story," said Haug, whose company has been linked with a buyout of the Brawn team.
"To get a call on December 5 and then, three months later, to go fastest at Barcelona over a single lap and a race distance, it's incredible. It's fully deserved.
"And at McLaren, nobody has scored more points than us in the final part of the season, so we've recovered quite well. I think Jenson was strong today, very committed, and he deserved it.
"And it's car 22 for the second year in a row, two English champions in a row, two Mercedes engines winning in a row and the second time that they champion scored the points he needed by finishing P5 in Brazil."
Haug, who could supply up to four teams next year, admitted the company was very happy with its image in Formula 1.
"We feel that Mercedes has a very good image," he added. "People know we are racers and not bs'ers or political. We're tough racers. We have earned money with our engine leasing and the customers are satisfied.
"We're absolutely in the plan with the engines. Remember where we were five years ago, or at the start of the 2006 with the V8, and we have had no failures this year. We're absolutely pleased."