Getting Drive belts and a water pump replaced on a 2013 Mazda3

Hi, this is Bo, an auto expert on RepairPal's Car Genius team! Good news, replacing the tensioner while everything is already apart is absolutely the right call and any shop worth their salt would recommend the same thing. Since they already have the belts off the additional labor to swap the tensioner is minimal and tensioners on a vehicle this age are absolutely worth replacing proactively. A leaking or worn tensioner that fails after a fresh belt and water pump job would mean pulling everything apart all over again which nobody wants. Think of it as buying insurance while the hood is already open. Ask them to show you the old tensioner when the job is done if you want peace of mind that it actually needed replacing. Visit RepairPal.com to make sure you're getting a fair price on the whole job! If you need any further advice or want help finding a trusted RepairPal shop in your area, please feel free to call us at 877-913-1554