First thing you must do is Google HPFP failure. It is happening to all 2010 and newer models with the CR injection system. Mine died on the road at 23,000 mi and had a horrible time threatening VW of America and the delearship to fix under warranty. All the dealers are giving the same story to owners that face the "flashing lights of death" on ther dashboard that they are to blame for putting gasoline in their engines instead of diesel. This is a lie not to honor an engineering defect.
Handling, acceleration, comfort
VW America must re-engineer the fuel system to comply with ULSD in the U.S. otherwise this issue will continue.