As you may know, an engine's compression ratio is directly linked to its combustion efficiency. All else being equal, higher-compression engines tend to make more power while offering better fuel ...

The terms "fuel-efficiency" and "fuel consumption" are often used interchangeably, but engineers say there's an important difference between the two.

A modern Formula 1 power unit squeezes more useful work from a liter of fuel than any production car on the planet.

Fuel economy conversations usually drift straight toward hybrids. That makes sense because battery assistance dominates the mileage headlines. Even so, gasoline-only cars still have a story worth ...