One problem related to loud engine noise has been reported for the 2010 Volkswagen GTI. The most recently reported issues are listed below.
The car sputtered, shook, and made an awful sound similar to a ton of marbles in a drier machine. The timing chain went at roughly 82,000 miles. According to vw literature they stated that the reason they went back to a timing chain is that it is a lifetime, nonserviceable part. The timing chain going on an interference type engine destroyed my engine to the order of almost $4000. Vw did not want to assist with anything.