Do you have to change the cambelt in BMW 320d e46?

Yes, according to the BMW Maintenance Schedule, all BMW 320d E46 models up to and including 10/2003 require a cambelt change every 6 years or 120,000 miles, whichever comes first. For models newer than 10/2003, a cambelt change is required every 10 years or 155,000 miles. It's important to follow these guidelines to ensure the proper functioning and longevity of the engine.