Neil Trotter, from Coulsdon, south London, plans to upgrade his oil-stained Ford Focus with some flashier cars, including a McLaren. But first on the shopping list is a new house, with ample garage space.
The 41-year-old hot rod racer, who runs a repair garage in Mitcham, south London, called Chameleon Coachworks, became the National Lottery's fourth biggest winner on Friday night.
The self-confessed motor racing fanatic now plans to hang up his car mechanic overalls and follow his passion for British touring car racing.
Mr Trotter anticipates that some people might joke about his surname and him becoming a millionaire.
"Me and my dad thought we'd heard all the Only Fools And Horses jokes but I can see this is going to run and run," he said.
"Still, being Trotters, we were always going to be millionaires one day."
Mr Trotter and Nicky Ottaway, 33, his partner of eight years, have already made plans to spend some of their fortune on cars, a new home and a holiday abroad - as soon as Mr Trotter has renewed his passport.
"I drive a Ford Focus at the moment. It's always been reliable but the steering wheel is black from oil off my hands and it's time for an upgrade," he said.
"There are a lot of stunning cars out there - I'm going to need a lot of garage space at the new house. I would love to own a hypercar. Something like the McLaren, although I'm not sure how easy they are to get hold of."
l There was no winner of last night's £12.6m EuroMillions jackpot. The winning numbers are 27, 36, 34, 08, 39 and lucky stars five and 10. UK Millionaire Raffle: HZP 388021.