She nailed the lottery and then drove off with a new lover!

A British woman — and $243 million jackpot winner — split from her husband and hooked up with the luxury car dealer who sold her a small fleet of Audi automobiles, according to a published report.

Gillian Bayford and her husband Adrian won the big EuroMillions lottery last year.

She purchased five Audis for her and loved ones, she apparently caught the eye of Alan Warnock — sales manager of John Clark Audi dealership in Dundee, near the home of her parent’s Scottish home in October, according to the Daily Mail.

Before their lottery win, Gillian worked at a hospital in Cambridge, while hubby Adrian ran a small music store in Haverhill.

They announced their split last month, chalking it up to stress brought by their new found fortune.

A pal of Adrian’s told The Mail he’s aware of Gillian’s new boyfriend but declined further comment on his behalf.

Gillian’s spokesman said: “She will not be discussing her private life now or in the future.”