Faults:

The Quattro 30tdi is a beautiful car; lots of comfort and power, and economical for a V6 diesel 6 speed auto.

The only problem encountered was the injector leak off valve, oil cooler leaks and the Tiptronic 6 speed transmission, it started slipping gears, went into fail-safe mode, then lost all gear engagement completely. When inspected by a local garage was told the failure could have been prevented if it had an earlier oil replacement. Probably wasn't done by the previously owner. Eventually ended up replacing the transmission.

But they good cars, it's a pleasure to drive a quattro and this engine is powerful, but make sure the engine and transmission get their regular services to prevent any failure.

In a nutshell, an awesome car with awesome power.