Renault boss Flavio Briatore says his team's spirit was key to winning both the drivers' and constructors' titles.
Champion Fernando Alonso claimed the season-ending China Grand Prix to lead Renault to the constructors' crown, but Briatore insists it was a team effort.
"This was really a victory for the team," Briatore told BBC Radio Five Live. "Everyone did an incredible job from Fernando to the last mechanic.
"The team has worked so hard and I'm happy for my people not for myself."
The Italian businessman had previously won the constructors' title with Benetton in 1995.
But, after returning to Formula One in 2001 to form the Renault team, he said he was both surprised and delighted to emulate his feat so quickly.
"We won the championship in four years," said Briatore. "It's fantastic. Nobody has done that before and I'm very pleased."
Briatore was also jubilant after quashing the ambitions of rivals McLaren, who had slim hopes of stealing the constructors' crown from Renault.
"McLaren completely built up the constructors' championship but we won that as well," said Briatore.
"We beat McLaren fair and square. We do the job when we have to do the job."
Dennis and Montoya rue their bad luck at the China Grand Prix
McLaren's challenge effectively ended when Juan Pablo Montoya was forced to retire after damaging his car running over a loose drain cover.
But boss Ron Dennis conceded his team had already undermined their own title chances in the first half of the campaign.
"A manhole cover that's caught us screwed us up in China," said the McLaren chief. "But you don't win or lose championships on one race.
"We strongly feel our championship efforts were thwarted by our conservative approach to the first four grands prix.
"That's of course the benefit of hindsight. We got 19 podiums, 10 race wins - it's hardly a disaster."