Do you have the original quote in writing? If not, there's probably not a lot you can do, try calling trading standards & a proper Porsche garage for a reconditioned engine quote to compare.
I know this is of no use to you but you should have gone to a branded porsche dealer in the first place. Anything complicated/expensive should not be put in the hands of people that take 3 months to diagnose the wrong fault. They may be lying to you and there's been nothing serious wrong with the car all along.
Sorry to be blunt but if you can't afford to maintain an ageing luxo sports car at a branded dealership, you shouldn't really be driving a Porsche...
Edited by PatrickO on 01/06/2011 at 13:32
|