What are the common electrical issues in an Audi A3?

I've been having some trouble with the electrical system in my Audi A3. What are the most common issues and how can I prevent them?

One common issue is a faulty alternator, which can cause the battery to drain quickly. To prevent this, make sure to get your alternator checked regularly.

Another common issue is a malfunctioning starter, which can prevent the engine from starting. Regular maintenance and addressing any unusual sounds from the engine can help prevent this.