40k miles and no problems except for battery dying, but Acura replaced it free. This car runs as well as it did when it was brand new. I'm reading a lot of posts complaining about squeaks/rattles but on mine, it's minimal. Since buying this car, I did drive a friend's G35 which definitely has better acceleration off the line. However, the interior trim and lower cost of the TL still makes it the right choice in my book. One negative think I agree with is the ipod connector. I honestly didn't even know it existed until reading these posts because it's in such obscure location.
The car just puts everything at your finger tips (except ipod jack) and you feel safe/secure. The fuel economy is up to 25 average, which is outstanding.
Maybe a 6 speed at. That could close the performance gap with competitors.