Australia moved up to third in the world Test rankings with their victory in Sydney, leapfrogging England in the process.
The Aussies jumped from fifth to third - overtaking Pakistan too - after they sealed a 281-run victory at the SCG, and a 5-0 Ashes whitewash.
Michael Clarke's men climbed to within six points of second-placed India.
England's crushing defeat cost them nine points and saw them slide from third to fourth place at 107, five points clear of Pakistan.
South Africa remain comfortably atop the world rankings at 133 points, according to the International Cricket Council.
It is a remarkable turnaround for the Australians who had a forgettable year in 2013 - losing a four-Test series to India without a single win and the previous Ashes series in England 3-0.
Clarke is targeting the top spot in Test cricket and Australia's next challenge will be a three-game series against South Africa in February-March.
India will have a chance to shore up their position with a two-Test series against eighth-placed New Zealand beginning in February.
England face Sri Lanka, ranked sixth, for two Tests in June.