A nice appearing '06 with appealing interior to some one that appreciated the mechanical work you've done...easily, any day @$3.5K would make the buyer smile. Drive home your point that the 1.86K miles is NOT a reflection of engine/suspension wear and show your receipts for a solid 4K(firm) cash price is, in my Middwest opinion, not unreasonable. I would start @ $4.5K esp if your '06 is a (5) door.