One problem related to engine has been reported for the 2004 Toyota Avalon. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2004 Toyota Avalon based on all problems reported for the 2004 Avalon.
While driving in stop and go traffic the vehicle's engine revved up and the vehicle accelerated forward into another vehicle. The rpm reached 7000. The consumer stated that this marks the fourth time this vehicle has had this issue. The consumer referenced 10099310. Heavy smoke came from the front of the vehicle after the crash. The consumer had to turn the key to the off position to stop the engine from racing.