This document discusses some known issues with higher mileage European cars, including potential drops in power when accelerating, emission problems from not meeting US standards, and higher costs. Specifically, it notes that European cars may have issues with high pressure fuel pumps or using gasoline instead of diesel that can cause loss of power. They also do not include the high pressure fuel injection systems or after treatment systems needed to meet stricter US emission regulations. Finally, meeting these emission standards and using more expensive diesel in the US increases the overall costs for American consumers compared to domestic vehicles.