If the Oil Pump in your Volkswagen car is not functioning correctly, it could cause major damage to your engine. The oil pump is responsible for pumping oil to the moving parts inside the engine, so a malfunctioning oil pump could cause these parts to overheat, leading to intense wear and tear, reduced engine performance, and the potential for engine failure. Additionally, a malfunctioning oil pump could also lead to lubrication problems, which could create larger issues such as increased wear and tear and potential damage to key engine components.