The risks of driving a Volkswagen car with an Oil Separator problem are very concerning. Without a functioning oil separator, the oil and other contaminants in the engine are not properly separated. This can lead to excess wear on the engine and its components, decreased fuel economy, increased emissions, and a number of other detrimental effects. In addition, driving with an oil separator problem may lead to engine failure, as the oil and other contaminants build up and clog the engine. This can lead to a stalled engine, which can be dangerous while driving.