Mercedes-Benz says that it is introducing a new class of vehicle in the 2006 R-Class, but the first sport-tourer was the Chrysler Pacifica. Nevertheless, the 2006 Mercedes-Benz R-Class is available as the R350, which comes with a 268-horsepower V6, and the R500, powered by a 302-horsepower V8. Both models come with a seven-speed transmission. The R-Class is five inches longer than a typical SUV, and is a clever combination of a sport-ute and a minivan. Inside, the first thing you’ll notice is the panoramic glass panel that runs from the windshield to the tailgate. The glass panels give the interior a spacious, open feeling. Outside the new R-Class design carries the subtle character of the CLS sedan.