My first Camry SE wouldn't pass emissions. A CPO. I don't really know what the exact trouble was. They had the car for a week while we had a loaner. Car is fixed with a good inspection sticker. There was a bill for parts and labor of 1500$, customer cost zero. Judging from parts, the head was replaced along with some other parts. I never got a straight answer on the exact problem. The car ran great, right up to the second it was T-boned by a lady running a stop sign. We went on to buy 2 CPO Camrys but neither of them from that dealership.