 I bought my 2010 Mazda CX-7 new.  I was generally satisfied, though pretty annoyed with the fact that I was constantly being pulled over and told that one of my headlights was out - like every couple of months.  This turned out to be a "known issue" for Mazdas according to one of the garage mechanics I talked to because I wasn't about to go to the dealer to have them replaced at several hundreds of dollars (they take off the front bumper or something) - the guy at the garage would sometimes have to spend 20-30 minutes fiddling around to manipulate the gasket to replace the bulb, but they never charged for more than the cost of the bulb.  Anyway, I religiously change the oil with synthetic per recommendations and yes, it has 108,000 miles on it now, but just 2 months ago I replaced the wheel bearings in the rear driver's left side and put new front brakes in it to the tune of $800+ at the dealer.  So, it would have been nice to have a head's up that is a significant chance that the turbocharger might fail and that if it does that it could lead to catastrophic engine failure.  But no, instead that happens on one of the coldest nights of the year during rush hour.  And they can't tell me if the turbocharger failure resulted in a blown engine which means the car is basically a hunk of junk or not.  The dealer recommends that rather than spending the money on replacing the turbocharger since he doesn't know if that will fix it, I look to trading it in.  Well, NOT on another Mazda!  Grrrrr.