How often do you need to change a cam belt on 1.6sxi 02 plate astra?

For a 2002 Vauxhall Astra 1.6 SXI, it's generally recommended to change the cam belt every 40,000 to 60,000 miles or every 5 years, whichever comes first. However, it's always best to consult the owner's manual or a professional mechanic for specific guidance based on driving conditions and maintenance history. Regular inspections can also help identify any signs of wear that may necessitate an earlier replacement.