The market place in the EU is different to the one in the US. Some EU citizens don't seem to understand that Americans prefer a comfortable suspension and a lot of torque, don't mind a big car, and like luxury accessories. Some Americans are unaware that Europeans prefer good handling and fuel efficiency, want good room economy and excellent interior build quality. In general, Europe is a little more engineering-minded, while the US is more design-minded and technologically more traditional. Most American and European cars are designed to meet the demands of their home markets. European subsidiaries or units of American manufacturers build the same type of cars as European manufacturers. In Europe, European Fords (developed in Germany and the UK) are considered European. Opels/Vauxhalls (developed in Germany) are considered German. Even if the parent company is American. Europeans are sometimes blamed for their arrogance, Americans are sometimes blamed for their ignorance when it comes to the world outside the USA.
Right now, the automotive sector in Europe is doing better than the US, for a number of reasons. There's a tendency in the US for more fuel efficient cars (though not to the extend that some people seem to think), caused by factors outside the auto industry. This tendency's an advantage for European carmakers, until the moment that US manufacturers will have adapted. Over the years, the differences between German, French, Italian etc. cars have become a lot smaller. In the same way, differences between American and European cars will diminish. That'll be just another step towards globalization.