What is the best oil type for the Audi A4 engine?

I just bought an Audi A4 and I'm wondering what type of oil is recommended for its engine to ensure optimal performance and longevity?

Based on the manufacturer's recommendations, the best oil type for the Audi A4 engine is a fully synthetic oil with a viscosity grade of 0W-40.

I have been using a high-quality synthetic oil with a 5W-30 viscosity grade in my Audi A4 for years and have had no issues. It's important to stick with a synthetic oil for this type of engine to ensure proper lubrication and protection.