1. Very reliable. Most issues are minor (exception, oil consumption... review the TSB's)
2. Fuel senders are a bit wonky (several threads on this) and I actually managed to break the auxillary port on the stereo somehow (replaced under waranty), otherwise, nothing major.
3. Tire feathering?
4. the 7AT is EXCELLENT!
< .5 second shifts that are very crisp; no significant difference in drivetrain loss between 7AT and 6MT (we're talking like
< 1%); road performance that is generally a bit superior to the 6MT (a few 10ths quicker in 0-60, 1/4 mile, etc); syncro rev match on downshifts (yep, we have it to!).
5. I see a ~21.5 MPG on the average.
There is no service interval for the 7AT trans as far as I know. There's definitely no service for the valve train -- it's a magic system that runs on unicorn blood