Whincup's 2014 title marked the last time the #1 was campaigned to a championship win. That may have to wait until 2022, should a new driver take out this year's crown and opt to assume the #1 for their title defence.
James Courtney also ran the #1 in 2011 when he shifted from Dick Johnson Racing to the Holden Racing Team.
Shane van Gisbergen has campaigned the #97 since 2013
Johnson and McLaughlin took the #17 to a combined eight titles, with the #2 winning five championships.
Five-time champion Ian 'Pete' Geoghegan was the first driver to carry the #1 the year after he won a title.
Norm Beechey, Colin Bond, Jim Richards, Mark Skaife, Glenn Seton, John Bowe, Marcos Ambrose, Russell Ingall, Rick Kelly and Garth Tander also proudly campaigned the #1 after championship victories.
The Repco Supercars Championship field will return to Victoria for the Penrite Oil Sandown SuperSprint across March 20-21. Tickets are on sale now.