Re: New WK2 taken delivery, already troubles...
When I first negotiated what I thought was a killer deal (it really was!) on a 2011 GC Overland - I was ecstatic. I asked the dealer to tell me how many miles were on the vehicle - and poof - about the same mileage as yours. Needless to say I axed the deal immediately.
My wife preferred I negotiated on a 2012 GC Overland, so that's what I did. It made the search longer and more stressful, but it all paid off in the end.
Stand up for your consumer rights, and look for a consumer protection agency near you for advice and help should this dealership stonewall you. Good luck!