Jared Leto insists his tours aren't filed with ''sex, drugs and rock 'n' roll.''

The Thirty Seconds to Mars frontman - who picked up the Best Supporting Actor Oscar for his role in 'Dallas Buyers Club' on Sunday (02.03.14) - is preparing for a string of European shows with the band and insists their life on the road is ''quiet and simple''.

He told 'Access Hollywood': ''When you're on tour, you learn quickly how to take care of yourself.

''Our tour bus is pretty quiet, pretty simple, filled with some vegan butter and almond milk. So it's not the sex, drugs, rock 'n' roll.''

The 42-year-old star - who is joined in the group by his brother Shannon Leto and Tomo Milicevic - took his mother Constance as his date to the Oscars and she will also be going on tour with her sons.

Jared told Fuse News: ''My mom, she's coming on the road.''

30 Seconds to Mars will also embark on a US tour later this year with Linkin Park and AFI and Jared has promised the gigs will be extra special.

He said: ''I assure you one thing -- the shows are gonna be something not to forget.

''They're gonna be wonderful. I mean, this is an opportunity like we've never had before. We're really proud to be part of it.''