Why did my Volkswagen Passat suddenly die while I was driving?

I was driving my Volkswagen Passat on the highway and suddenly it just died. The engine shut off and I had to pull over to the side of the road. What could be the cause of this sudden and unexpected breakdown?

It's possible that your car's battery died. This can happen if it's old or worn out. You may need to replace it.

It could be a problem with your alternator. This is responsible for charging the battery while the car is running. If it's not functioning properly, it could cause a sudden breakdown.

Another potential cause could be a faulty fuel pump. If it fails, it can cause the engine to shut off while driving. You may need to have it replaced.

It's also possible that there is an issue with the ignition system. This could be a faulty ignition coil or spark plug. Have a mechanic check it out.