What is the most common issue when the Audi A6 engine won't start?

My Audi A6 won't start. I turn the key but nothing happens. What could be the problem?

This issue could be caused by a dead battery. Make sure to check the battery connections and try jump-starting the car.

Another possible cause could be a faulty starter. If the battery is fully charged but the engine still won't start, it may be time to replace the starter.

Sometimes, a faulty ignition switch can prevent the car from starting. If this is the case, it's best to have a professional inspect and replace the switch.