Five-cylinder engines occupy a strange sweet spot in automotive history, sitting between the balance of a straight-six and the compact packaging of a four-cylinder. They have powered everything from ...

In theory, Wankel-style rotary internal combustion engines have many advantages: they ditch the cumbersome crankcase and piston design, replacing it with a simple, single-chamber design and a thick, ...

Gas-powered internal combustion engines need spark plugs to (literally) ignite and complete the combustion stroke, enabling the motor to produce power. They may seem unusual to the untrained eye, but ...