it could of been a number of different things tbh
Im guessing it was a newer MK2 Leon 2005-onwards
Im gonna take a big guess and said it was a 2.0TFSI engined car, these can be found it the FR/Cupra/Cupra R
Stage2+ on these puts them at about 350-360bhp, a few (mainly in europe) are running Stage3-Stage4 (Some have gone as high as 600bhp)
It also sounds like it had the “K1” Body kit on it