Why does my Audi A6 have trouble starting after sitting for a few hours?

I have a 2017 Audi A6 and whenever it sits for a few hours, it has trouble starting. It cranks for a while before finally starting up. This usually only happens when the car has been sitting for a few hours and not after a short drive. What could be causing this issue?

This could be caused by a failing fuel pump or clogged fuel filter. When your car sits for a few hours, the fuel in the lines can drain back into the tank, making it harder for the pump to push fuel to the engine. It is also possible that the filter is restricting the flow of fuel, causing the delay in starting up.

Another potential cause could be a failing starter motor. After sitting for a few hours, the starter motor may have trouble turning over the engine. This can be due to worn out brushes or a weak battery. If you notice any strange noises when starting your car, it could be a sign that the starter motor needs to be replaced.

One possibility could be a faulty ignition switch. If the switch is worn out or faulty, it may not be able to properly send the signal to the starter motor to start the engine. This is a relatively simple and inexpensive fix, so it is worth considering as a potential cause.