Speed and power are great, but fuel economy is the focal point of all hybrid models and the S400 Hybrid is no exception. Unfortunately, this full-size sedan pulls off a relatively disappointing 19 mpg city and 25 mpg highway. This is doubly disappointing when you consider its diesel-powered stablemate—the S350 BlueTEC—delivers 21 mpg city and 31 mpg highway.
Handsome 18-inch wheels complement the S400's elegant styling. The S-Class looks like it actually is the CEO of a large company—not just his car. But its good looks don't disguise the fact that it costs more than rivals from BMW and Audi, and can't beat their fuel economy figures.