If the Water Pump on a Volkswagen is having issues, it can cause a few potential risks while driving. First, the engine can overheat if the Water Pump fails completely and no water or coolant is being circulated to keep it cool. This can cause permanent damage to the engine and result in costly repairs. Secondly, the lack of coolant being circulated can also cause the engine to seize up, resulting in a loss of power and the inability to control the car. Lastly, a Water Pump problem can also cause a decrease in the car’s performance, due to the engine being unable to reach its optimal temperature.