The latest concept is a small four-cylinder running on synthetic fuel that can achieve 71 mpg in an EREV platform.

From its modest beginnings in 1860 as a single-cylinder, coal gas-powered machine capable of just two horsepower, to the high-revving, 1,000-horsepower V6 powerplants used in F1 cars today, the ...

The inline-6 engine layout has its fans in the gas world, but it's the de facto standard design among diesel aficionados. Hardly surprising, as these engines are less complex than any V layout and ...