One problem related to engine has been reported for the 2007 Toyota Avalon. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2007 Toyota Avalon based on all problems reported for the 2007 Avalon.
Defective hose in the engine/oil system failed causing all of the oil in the cars engine to drain immediately. The vehicle was towed to my Toyota dealer where they explained that some Avalons have had this happen. Toyota acknowledges this but has not issued a recall. My car was under warranty and was fixed for free as it was covered. However, my driveway is loaded with all of the oil from my engine. If this happened on the road I would have lost the engine.