Citroen's Sebastien Loeb clinched a record fifth world title in a row after surviving a late spin to finish third in the Japan Rally on Sunday.
Rival Mikko Hirvonen led Jari-Matti Latvala in a Ford one-two but it was not enough to keep the title race alive.
"It's incredible," Loeb told reporters. "But that was a terrible rally -- it couldn't have been more tricky. There was a lot of pressure but now it's a great moment. It's perfect.
"I'm so relieved this weekend is over now. Last year (co-driver) Daniel (Elena) and I equalled the record with four wins, so being the only ones with five is nice."
A spin on the penultimate stage almost cost the Frenchman third place and his hopes of glory in Sapporo as torrential rain made conditions treacherous.
"I spun a few hundred metres before the finish," said Loeb. "I was doing about 50kph in a straight line and then 'Bang!' -- it just went.
"We had to reverse and get going again. I lost the electronic differential control because of the water everywhere."
However, Loeb recovered to finish more than a minute clear of Subaru's Chris Atkinson in fourth.
DOMINANT SEASON
Hirvonen won by 31.1 seconds from fellow Finn Latvala but paid tribute to the 34-year-old Loeb for another dominant season.
"He definitely deserved it," said Hirvonen. "Everybody can see he won 10 rallies this year. I did all I could. I will just have to try again next year."
Loeb had wanted to secure the title in Japan in order to drive flat-out in the last race in Britain later this month in a bid to break his own record of 10 wins in a season.
Friday's first leg began frustratingly for Loeb until a high-speed crash involving Ford driver Francois Duval gave the Frenchman third spot.
Duval's accident left his co-driver Patrick Pivato badly injured and needing surgery for a fractured pelvis and tibia, and caused the afternoon's stages to be cancelled.
Loeb, dubbed the "Michael Schumacher of rallying" for his stranglehold over the sport, has won a record 46 races during a career that began in 1999.