Megan Fox was forced to lather up and clean a Ferrari to land her breakthrough role in “Transformers,” according to a British film critic.

The sexy actress shot to superstardom after appearing in 2007′s “Transformers” and this year’s sequel “Transformers: Revenge of the Fallen.”

But the star’s start in Hollywood was anything but glamorous, after director Michael Bay made her clean his expensive car as part of her audition for the role, according to U.K. broadcaster Jason Solomons.

He writes in his film column for the Observer newspaper, “He made her wash his Ferrari while he filmed her.”

And Soloman insists Fox was concerned as to where the footage may have ended up, quizzing an embarrassed Bay over the bizarre audition.

He adds, “She said she didn’t know what had happened to that footage. When I put it to Bay himself, he looked suitably abashed — ‘Er, I don’t know where it is either.’”

Fox and Bay have had a famously rocky professional relationship — last month Fox took a swipe at the auteur’s filmmaking stating that the “Transformers” sequel was “not a movie about acting.” Bay hit back, branding the beauty “ridiculous” while telling her she “had growing up to do.”