2019 CX-9, 30K miles, in August found coolant leaking under the car. This was 5 months past the warranty (but only 30K miles!).
I called Mazda corporate, they said they can try to assist, but first I have to take the car to the dealer for diagnosis of the problem. Had to wait 2 weeks, then leave the car, they did a full inspection and confirmed cracked cylinder head. They also found the belt tensioner is leaking. Funny, here's another part that notoriously fails in all Mazda cars, all tensioners with sn ending .10, and there's a TSB requiring replacement of this part with new one, with sn ending .13. But they don't see this as a design fault they should be responsible for? How is this not a recall?!
Still, belt tensioner is tiny potatoes comparing to the cracked cylinder head.
Dealer opened up claim with Mazda (which apparently is separate from the case I made when I called the corporate). I had to go back because Mazda warranty dept was asking the dealer to prove the engine was overheating, which is BS, because I kept adding coolant, so the engine never overheated. But the dealer lowered the coolant and had the engine overheat a little bit just to generate the code the warranty dept was requiring.
After all this, they lowered their original quote from 10K to 6K and expect me to pay this to replace the engine. I called the corporate many times, but they said if the warranty dept. decided this, they cannot change it. And there's no way to talk to warranty dept. directly (not customer facing). The service manager at the dealership is a nice guy, but his hands are tight, supposedly, he did the best he could. Mazda simply doesn't give a f*ck about their customers and the design/manufacturing problems they should be responsible for.
So basically, you buy a $40-50K car, 30K miles later it turns out the heart of the car, its engine, needs replacement because of a manufacturing defect, and you are expected to put out additional $6K+ for this??!!! This is BS. Not only Mazda should fully cover this repair and parts, but they should also recompensate for the collateral loss. We bought a brand new car. This repair requires taking out everything underneath the car just to drop the engine. Being done by mechanics, it will NEVER be the same as factory. We're talking about lost washers, incorrect bolt torques, changed screws, broken clips, incidental scratches in and out of the car, etc. This is NOT what we paid for, and once this happens, the owner value (not market) of our car goes down significantly. A car being taken apart to this degree is never the same as factory assembled.
My family and I are livid and we will dedicate a lot of our time to spread our story and experience across all media, so that people don't fall into the same bad Mazda product trap we did. I think that goes without saying, but we will NEVER buy another Mazda.
