Ogier finished third in the season-closing Rally Saudi Arabia to pip Toyota teammate Elfyn Evans to the crown.
Ogier's exploit was all the more remarkable as he was competing as a 'part-time' driver this year, skipping three of the 14 rallies.
Evans had arrived in Jeddah leading the standings by three points, but his hopes of finally ascending to the WRC throne after finishing runner-up four times were scuppered by a costly puncture on Friday.