This engine is fitted to a highly-controversial plug-in hybrid sports sedan, but it is still an engineering marvel.

When people think of big engines, they usually think of regular gas engines, like Koenigsegg's 2,300-horsepower monster. However, if you think about it, there are many much bigger vehicles out there, ...

A close-up of a supercharged Hemi V8 engine in a vehicle engine bay. - pporiphotos/Shutterstock Many people have heard of Hemi engines, but don't really know what ...