Auto | Fuel Efficiency | Fuel Economy

Fuel economy is about maximizing the number of miles your vehicle can travel on a gallon of fuel. The cost of fuel has a major impact on fuel economy. Check out these great fuel economy articles from HowStuffWorks.


How EPA Fuel-Economy Testing Works

How EPA Fuel-Economy Testing Works

Why do the EPA's fuel economy numbers almost always seem to be off-base? Learn how the EPA tests new cars and trucks to gauge their fuel economy. See more »

How the Hydrogen Economy Works

How the Hydrogen Economy Works

With fossil fuels in limited supply, the ever-increasing consumption of this commodity causes problems ranging from global warming to dependence on outside oil sources. Hydrogen is a possible fix, and the technology to take advantage of it is already out there. Find out the benefits of and hurdles facing a hydrogen economy. See more »

What speed should I drive to get maximum fuel efficiency?

What speed should I drive to get maximum fuel efficiency?

I know that the faster I drive my car, the more gas it uses. But on the other hand, I'll get to my destination in less time. Is there a "sweet spot" on the speedometer that would give me maximum fuel efficiency? And if so, is it different for different car models? See more »