One problem related to manifold/header/muffler/tail pipe 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.
Head gasket leaking found 6 head bolts loose. Installed new head gasket set, new intake manifold. Paid 2000 dollars for repairs, now having problem with the engine. Makes loud noise and overheats. Mechanic and bar agent advised it was a manufacturing problem. Headbolts came loose again and now I need new engine. Previous to this my insurance had paid a total of 5000 dollars for some mechanical and body work. I have been without a vehicle for almost seven months now. Called Toyota manufacture company they told me the only way they would inspect the vehicle would be if they charged me. I do not have the money to afford the repair again and to buy a new engine. I just need it to be inspected especially since I had a government official from the bureau of auto repair confirm that there was a manufacturing defect.