Is the coolant changed on a 2006 Mazda Mazda 3?

Yes, the coolant in a 2006 Mazda Mazda 3 should be changed as part of regular maintenance. It's generally recommended to replace the coolant every 2-4 years or according to the manufacturer's guidelines. This helps prevent engine overheating and corrosion within the cooling system. Always refer to the owner's manual for specific maintenance intervals.