What are some common issues to look out for when purchasing a used Volkswagen Passat?

I'm in the market for a used Volkswagen Passat and I want to avoid any potential problems. What should I be aware of when considering a used Passat?

Make sure to thoroughly inspect the engine and transmission, as these are the most expensive components to replace if they fail. Also, check for any signs of rust or water damage, especially in areas prone to salt on the roads.

Take the car for a test drive on both city streets and highways to get a feel for the handling and performance. Pay attention to any unusual noises or vibrations.

Check the maintenance history of the car. If the previous owner kept up with regular maintenance, it can decrease the chances of major issues down the road.