One problem related to engine noise has been reported for the 2006 Toyota Scion Tc. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2006 Toyota Scion Tc based on all problems reported for the 2006 Scion Tc.
The engine sound increased while I was driving on highway. Got back home check the oil level it was dry. Found out that these scions have a problem with oil consumption.