5. BMW M5 Touring: The Ultimate Sleeper

The BMW M5 Touring stands out as a true “sleeper” car—packing supercar performance into a wagon body that looks almost ordinary. Its rarity makes it even more coveted, as only select markets were lucky enough to receive this high-powered hauler.
With the heart of a sports machine and the subtlety of a family wagon, the M5 Touring is often more exclusive—and surprising—than its coupe siblings, turning heads for those who know what’s under the hood.
Source: Road & Track