Can I use the Audi A4 20T before replacing the timing belt?

I recently bought a used Audi A4 20T and I noticed that it has over 100,000 miles on the odometer. I am wondering if I need to replace the timing belt before driving it further to avoid potential engine damage.

Yes, it is recommended to replace the timing belt at 100,000 miles or every 5 years, whichever comes first. Neglecting to do so can result in costly engine repairs.

As a rule of thumb, it's better to err on the side of caution and replace the timing belt sooner rather than later. It's a relatively inexpensive maintenance task compared to potential engine damage.

If you're unsure about the condition of the timing belt, it's best to have a mechanic inspect it and replace it if necessary. Don't risk damaging your engine due to a worn out timing belt.