Was thinking of selling my 07 plate st tdci so I can pile some extra cash into the mortgage

Was just after some advice as to what people think its worth? I've looked on auto trader and the traders are selling higher milers for 11k+ but I'd prefer a public opinion

The car is totally standard, in performance blue with 28k on the clock and four brand new falken fk452's

Theres three stamps in the book (all from ford) and its just passed its first MOT with flying colours

Also I'm the second owner on the log book (the first being a family member)

I cant upload any pics as I'm at work but the car is as mint as the day it left the factory

This is my second one of these and i'll be gutted to sell but if its worth the rite money i'll put my sensible head on and bite the bullet

Not really wanting to sell but it would be nice to chip away at the mortgage a bit so i can get a job at home

p.s this is not a for sale thread, hence posting in the GD room...if it turns out that people think its worth a decent amount I will put up a proper for sale add