BMW 328i

Autobahn-Worthy Four-Cylinder Courtesy BMW

As stricter emissions standards kick in, auto manufacturers are downsizing engines, which typically means less power. But the 2.0-liter turbocharged four-cylinder in the new 328i—the first four-cylinder engine to go into a 3-Series since 1999—produces 10 more horses and 55 more pound-feet than the six-cylinder it replaces. That’s 240 horses and 255 pound-feet of torque, enough to accelerate from 0 to 60 mph in 5.7 seconds while achieving 34 mpg on the highway. From $37,395