I have a question to ask,I have a 05 coupe auto and just wanted to know when does the car hit fifth gear, how many mph? when I shift to triptronic from auto mode on the freeway it says im in 4th gear and im doing 75-80 is this correct? something wrong with tranny?

 

nothing wrong with it.

 

I thought the same thing when I got mine. The car automatically goes to 4th when you switch to tip mod.