The "Maggie May" star was recently rumoured to have been chosen as a guest judge on Simon Cowell's UK reality series "The X Factor", but Rod is adamant the story is not true.
Stewart, 70, said he does not dislike the show, but fears he would never be given the chance to judge because of his age.
"No. I wouldn't be doing that show. I've got nothing against the show. It's just I'm far too old quite honestly... I'm far too busy trying to flog (sell) my album.