This is my 4th VW and all have been diesels. This car now has 15,000 miles and my last tank yielded 46 MPG. It is a manual and I drive it pretty hard, I love the torque. I have had one plastic part which broke, fixed under warranty. There have been no other problems with this car. I am 6'1" and experienced a bit of difficulty with getting in and out of the car, but I am no spring chicken. Once inside it is quite roomy. The back seat is a bit small for full grown adults, however, it is usually just my wife and myself so the back seat is not a problem.
I love the TDI engine, my last one was not a PD and had 10 less HP. This car will respond as well as any I have had. Though it is not a dragster it will still put you back against the seat if I step on it. The best feature is the mileage. It is just getting broken in and I have averaged 43 MPG .
The new Golf will probably solve this problem but the back seat is a bit small. As someone else mentioned it would be nice if the hatch opened with the remote. I really love the hatch, it is very convienient to put things in the back of the car with a minimum of stretching and bending.