Mazda timing chain replacement typically costs $1,000 to $2,700 (example average US price in 2026), depending on the model, including parts ($300-$800) and labor (8-12 hours). Full repair often includes chain tensioners and guides. Note: the example price does not include diagnosis, additional required parts, the repair shop's location, or parts quality. It is strongly recommended to get a thorough diagnosis by an auto repair technician with Mazda repair experience.