Supercars are well-renowned for having some of the most powerful engines under the hood. Take the Bugatti Tourbillon; it boasts a 1,800-horsepower hybrid V16; likewise, the Koenigsegg Gemera comes ...

When it comes to the modern-day straight-six, the M 256 is a force to be reckoned with. That's the designation for the most powerful straight-six engine in the current Mercedes-Benz lineup, which also ...