Overall it's a fairly stable vehicle.
I've really liked my CX-7, (not yet at 80k) It's been a very reliable vehicle, however, it has small problems. The paint on the hood and roof is wearing and both visors have broken, replacement parts are SPENDY and they have discontinued some simple maintenance parts, causing you to have to invest heavily in the new parts. Mazda does not allow after market parts. I won't be buying another Mazda, it's not a long term vehicle.