How often do you need to change the cambelt on a Mazda 3 TS Diesel 2004 1.6 liter?

The cambelt on a 2004 Mazda 3 TS Diesel 1.6 liter should typically be replaced every 60,000 to 100,000 miles, or every 5 to 7 years, depending on driving conditions and manufacturer recommendations. It's important to consult the owner’s manual for specific guidance, as maintenance schedules can vary. Regular inspections are also advised, as signs of wear may necessitate earlier replacement.