The Mercedes-Benz E-Class cars were re-engineered from the ground up for the 2003 model year, and 2004 brings a vast expansion of the model line. Mercedes has redone its worldwide best-selling car with loads of new technology to go with its athletic new looks and much sharper, sportier driving dynamics. It's more like a BMW than ever before, but every inch a Mercedes-Benz. The E-Class includes the V6-powered E320 sedan and the V8-powered E500 sedan. The E500 comes with a sophisticated new seven-speed automatic transmission. For 2004, Mercedes has introduced the fantastically useful and flexible E-Class wagon, available in E320 and E500 trim. The new high-performance E55 AMG is the fastest-ever production car from Mercedes, boasting nearly 500 horsepower and a sports suspension. The E55 AMG, with its combination of acceleration, handling, braking and sheer accommodation, is the finest four-door sports car Mercedes-Benz has ever built, a car without cramped spaces, the quirks, the downsides or negatives that so many two-seater, two-door sports cars come with as standard equipment. In this family hauler, you can really haul. Direct competitors include the Audi RS6, the BMW M5, and the Jaguar XJR. All-wheel drive is available for all 2004 E-Class models, a great feature for winter driving and quite useful in the rain. New appearance packages have been added as well to give the E-Class a sportier look.