Mazda timing chains are designed to last the life of the engine, often 150,000-200,000+ miles with proper maintenance. Mazda does not specify a timing chain replacement interval. Timing chain inspection is recommended at around 100,000-150,000 miles or if symptoms arise. Poor vehicle oil & filter change maintenance will significantly shorten timing chain life.
Sticking to the correct service intervals is the best way to protect your timing chain, and our Mazda repair and maintenance team can inspect the chain and tensioner if you have concerns or symptoms.