We bought our car December 29th 2016. It was a 2015 Nissan Altima.. Just a little over a month later the battery dies!!! Yes they changed the battery for free but the fact that they are "inspecting it" they should have caught that it was an old battery. Just a couple days after that it was finally getting warm out here so we decided to put on the ac for the FIRST TIME and it's out!!! We have NEVER used the ac because it was winter when we bought it so they sold us the car KNOWING the ac was broken.. then they make it seem like they're doing us the favor by fixing it for free when we had purchased the warranty for it but still don't have a vehicle to drive until they fix it. If I'm buying a new car I expect it to be reliable.. so far carmax has failed me