I may be painting with an awfully large brush here, but dealers (especially Audi Porsche VW dealers) are properly called stealers. I have several stories of being treaded like a babe in the woods relating to Audi service. Once I took the 1.8T Avant in THREE times under warranty because the brakes had an odd lurch before biting. Finally after they claimed they took everything apart and found nothing, I opened the calipers to check things out. The pad material fell off the backing plates into my hands! Clearly they never did a thing. We also had a limp home issue on the AllRoad. The bastards at Valley Motors wanted several THOUSAND bucks to replace the mass air flow sensor, air box, and some O2 sensors. I took it to an indy with the fault code readings. They replaced the air filter, blew off the mass air flow sensor and reset the O2 sensor fault codes. It cost under $100 and has cured the problem. I responded by visiting with my 2 3 year old sons with toys in hand and let them loose on the sales floor for about 15 minutes. They set the staff crazy with their matchbox cars across the floor, hopping in and driving the kiddy car around the sales floor, and generally putting finger prints on everything including the brand spanking new R8 on the floor. Finally, when buying my Carrera, the PO had it inspected by Tischer. Those asshats refused to pass it until US dot headlights were installed or placed in a box on the passenger seat in lieu of the H4s installed. They quoted an insane price for the Dot lights. STEALERS!!!
Oh, and Z-Max is supported by Carrol Shelby so it must not be a scam.
Please excuse the rant, but it is early and this post struck a nerve.:XX