Since 1999 Mercedes-Benz no longer markets diesel cars in the US. However, such is not the case in Europe. With diesel soot emissions being reduced as a result of low sulfur fuel and advanced engine and fuel systems, diesel cars are becoming very popular in Europe. Mercedes, Porche, and BMW are just a few of the manufactures making advances with diesel automobiles. The supercharged Mercedes C230 CDI AMG diesel is one of the highest performance automobiles on the continent. Many are predicting a comeback of high tech diesel cars in the US when low sulfur diesel fuel becomes available in the next couple of years.