Not only is the Volvo S60 rated a Top Saftey Pick+ by the Insurance Institute for Highway Safety, it is now available with one of the most advanced engines on the market, a 2.0-liter 4 that is both turbocharged and supercharged, giving it an impressive 302 horsepower while returning a claimed 35 mpg on the highway. Base Price: $38,150 Engines: 2.0-liter 4 supercharged turbo 302 horsepower 24/ 35 mpg NHTSA Safety Rating: