What are some common issues with the Audi A4 and how can they be fixed?

I recently purchased a used Audi A4 and am wondering what are some potential problems that may arise and how I can address them.

The most common issue with the Audi A4 is engine misfires, which are often caused by faulty ignition coils. If you experience this issue, it is recommended to replace all ignition coils at once for optimal performance.

Another common problem is the oil consumption in the 2.0 TFSI engine. To avoid potential engine damage, regularly check and top off your oil levels. If oil consumption is excessive, there may be an underlying issue that requires professional attention.