One problem related to engine clicking and tapping noises has been reported for the 2005 Toyota Avalon. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2005 Toyota Avalon based on all problems reported for the 2005 Avalon.
2005 Toyota Avalon previously had massive oil leak, had vehicle towed to dealer and repair was covered by Toyota and provided with rental (10/08) 6/09, started vehicle and the engine made a loud clanking noise - had vehicle towed again and was informed by the dealer tech that it needs a new engine. Have extended warranty but not sure if they will cover repairs. 67,000 miles.