I bought the car at CarMax and they have a 5-day return policy, I have till the 14th to return it. CarMax also has a 30-day warranty policy. The car was purchased from the original owner in 2005 and has 31k miles so there is still warranty on it that can be transferred to me.

From any or your experiences, what should I do? Should I return it to CarMax? Have CarMax fix it under their warranty? Or take it to a dealership to fix under that warranty? The last two options, if I do that, #1 option of returning will be gone as I'm sure it'll pass the 14th.

Any suggestions would be very helpful, thanks.