How do I replace the fuel filter on my Audi A6?

I recently noticed a decrease in my Audi A6's fuel efficiency and was advised to replace the fuel filter. However, I have never attempted this before. Can anyone provide step-by-step instructions on how to replace the fuel filter on an Audi A6?

First and foremost, make sure you have the replacement fuel filter ready before starting the replacement process. Next, locate the fuel filter, which is usually near the fuel tank or along the fuel line. Once located, use a wrench to loosen the fuel line fittings and carefully remove the old filter. Finally, install the new filter and tighten the fuel line fittings.