Its how the dealership treats its customers.
I don't like anyone who accuses the user instead of the mechanics of the vehicle. Its happened enough and with diverse people that it can't be a USER problem. Audi and Toyota (at least initially), made that big mistake.
I bought a used MAZDA from a dealership awhile back. Within 2 months it started having serious problems which MAZDA did not cover. I appealed to the dealership that I bought MAZDA on its quality reputation and that this car, although used has been having problems ever since. The dealership refused to cover any of the repairs even though the problem kept reoccurring over and over and over again. I appealed to District manager who didn't do anything. When I appealled up to the Regional, they went back to District manager decision which was to do nothing. When the dealership changed hands, I got a call asking if I was satisfied with my purchase, I said "NO!" and gave the guy an earful! He said he'd check it out but never got back to me and when I called, they did nothing. I ended up giving the car up for charity.
I bought my Honda shortly after. When a warranty issue came up on a repair, Honda defended me, its customer and gave me a significant discount off the repair! They've never advised me of an unnecessary repair and have bent over backwards to "fit me in" when I was worried about something and had them take a look. Most times they didn't charge me for the look. My next car will either be Honda or Ford Fusion Hybrid.
I don't care how good Consumers like Mazda cars, I will NEVER EVER BUY ONE AND ADVISE my friends not to do so either!