what is the characteristics of spark plug in toyota prius 2014
NGK and Denso supply the original iridium spark plugs. I only use ones that they recommend for the Prius. Toyota only calls for these long life iridium spark plugs to be replaced after 120,000 miles, so if you are under that and not getting any check engine lights or OBD codes, you could wait. I replace mine every 60,000 miles, but I enjoy taking excellent care of my cars.
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