How do I change the spark plugs on my Audi A4?

I recently purchased an Audi A4 and noticed a decrease in performance. I suspect it may be due to old spark plugs and want to change them myself. Can anyone provide a step-by-step guide on how to do it?

To change the spark plugs on your Audi A4, first make sure the engine is cold. Locate the spark plugs, usually on top of the engine, and remove the plastic cover if necessary. Use a spark plug socket wrench to remove the old plugs. Check the gap on the new plugs before installing them. Finally, reattach the plastic cover and start the engine to make sure everything is working correctly.

Changing spark plugs is a fairly simple task. Make sure you have all the necessary tools, including a spark plug socket wrench, gap gauge, and new spark plugs. Start by removing the spark plug wires, then use the socket wrench to remove the old plugs. Check the gap on the new plugs and adjust if necessary. Finally, reattach the wires and start the engine to test the new spark plugs.