Drop-dead sexy is not the first phrase that comes to mind when we think of midsize sedans, but after spending a significant amount of time behind the wheel of the new 2006 Mercedes-Benz CLS500, we can’t think of another expression that so perfectly sums up the German automaker’s curvaceous new four-door.

Take the time to get beyond its eye-catching good looks, however, and you’ll discover the CLS500 is definitely more than just another pretty face. Where coupes and sedans frequently occupy opposite ends of the practicality and styling spectrums, the CLS500 does a remarkable job of finding the elusive sweet spot between these two familiar body styles, much the way Mazda has done with the RX-8.

Like all products that put an emphasis on style, however, we discovered a few flaws in our test car’s substance. Just the same, the head-turning CLS500 represents a significant step for an automaker that’s long been known for its formal – some might even say stodgy – sedan styling.