My car is a 2012 Countryman S with 78,000 miles. It has the upgraded radio that you control with the dial and the bench rear seat. Overall car is in decent shape. The wheels have some damage and the rear left reflector is broken and there’s missing paint.
The car has a rpm stage 2 tune, Borla Axle back exhaust, upgraded Intercooler and catless downpipe.

 

take it to CARMAX and they'll give you a fair price which will be very near the KBB IME. Costs nothing to get their offer.

Don't expect your mods to raise the cars value to them tho ..... you MIGHT recover some cost to a private buyer but don't hold your breath

in the end it will be worth what you sell it for .... asking price doesn't really mean anything.

 

I would say $11,500-$13,000