I'm guessing that your Leon is the 1.8 T 20v Cupra R (225)? If so values are showing on What Car? as:
Dealer: £12,320
Private: £11,605
Part Ex: £11,400
Cost New: £18,055
Thats on a 05, 55 plate with 13,500 miles on it. Extras add little to the value and it would seem that the dearler is £1,300 off Part Ex, but defo looks like you wont get £12,500 for it. Sorry
