“Ferris Bueller’s Day Off” celebrated its 40th anniversary this month, but not everyone is looking back fondly.

Mia Sara, who played Ferris’ girlfriend Sloane, told The Sunday Times, “I don’t really give interviews because making ‘Ferris Bueller’ was not that good an experience for me. But I’m very aware of what a precious thing this movie is, and I don’t want to disappoint people.”

The now 59-year-old Sara was also the youngest on the set, only 17 years old, and she struggled to connect.

She also “didn’t get along well with John [Hughes].”

John Hughes wrote, produced, and directed “Ferris Bueller,” among many other 80s classics, and according to Sara, was a “strange guy.”

“He wanted us all to hang out together and to introduce us to the French New Wave films. But the others were seasoned actors and I was a snotty New York kid and had seen all those movies, so he was frustrated in that desire. I didn’t have the emotional maturity to deal with other people’s egos, or my own,” she told the outlet.

Jennifer Grey, who played Ferris’ sister Jeanie, explained, “John was not like a normal grown-up. Think about how fast he wrote the script — that’s not normal, that’s a genius — and with genius there is a lot of asymmetrical development. So he was very playful and I just really connected with him.”

Sara quit acting almost entirely, choosing instead to focus on writing poetry.

“I never really had the resilience to deal with the audition process. There are some things in my career that I’m really proud of, but overall it was not a happy career for me,” she said.

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