Spark Plugs and Wires
Toyota Avalon
Toyota Matrix
Toyota Tacoma

You have Toyota Avalon 2003 how often should you change the spark plugs mine has 40000 Miles and you have not changed them yet There is no problem with your car?

Answer

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Wiki User
09/14/2011

Tune Up

According to the Toyota website your vehicle isn't due for a tune-up for 120,000 miles.