What type of brake fluid should I use for my Audi A4?

I recently purchased an Audi A4 and want to make sure I am using the correct brake fluid for optimal performance. I'm confused about all the different types available, so I need some clarification.

It is important to use the correct brake fluid for your Audi A4 in order to ensure the best performance and safety. For this specific model, it is recommended to use DOT 4 fluid for all models except the S4 and RS4, which use DOT 5.1.

When in doubt, it is always best to refer to the owner's manual for your Audi A4. It will specify the correct type of brake fluid for your specific model year and engine type.

If you are planning on performing a brake fluid flush or change, make sure you use a high-quality product from a reputable brand. This can help prevent any potential issues or damage to your vehicle.