I've abused 3rd quite a bit, but I would think that 5th would be the last to go out. I do remember having it pop out of 5th when I installed a short throw shifter, when I have the TT engine. It then wouldn't go into gear. I reinstalled the stock shifter, and then it would go into 5th. Wondering if the transmission was fubared from the beginning. It has only about 10k to 15k miles on it.