Nashville Autohaus , http://www.nashvilleautohaus.com/
. I'm in nashville. Will Fisher , the owner is a friend of the family's, great guy. I bought my first 92 Jetta diesel from them for 1900. It had 219,000 on it then and had a new head put on because the timing belt broke. It has like 280,000 on it now and still going strong. My step dad owns it now. They are good people and probably as honest as mechanics can be but cost 80.00 an hour. I think they know TDIs pretty good. Not as good as paramedick probably. I do all my own work on my TDIs so i do not know exactly what they know. People take them to them for timing belts though and i would recommend them for a shop. A local TDI guru would be best but unfortuneately, i am not there ( yet )
Also the VW Dealer in River Gate i read here has a good TDI Mechanic. Beware of Cool Springs Dealer. Never go there. They overfill oil, don't know a leaky IP when they see one and are generally worthless in my experience.
Our first TDI, the A3, the dealer selling it to us, had it inspected at Nashville Autohaus. He takes all his cars there. Another friend of the family's. That A3 has been the best, trouble free car we have ever had. I think an inspection is about 80.00 probably.