Here's why it's important:
* Timing Belt Maintenance: Regular timing belt replacement is crucial for interference engines. Failure to do so can lead to catastrophic engine damage.
* Costly Repairs: Replacing a damaged engine due to a broken timing belt is a very expensive repair.
Important Note: There are different engine options for the 2000 Audi A4 quattro. The 1.8T engine is the most common, and it's definitely an interference engine. If you have a different engine, it's essential to consult your owner's manual or a mechanic to determine if it's interference or non-interference.