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.

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How EPA Fuel-Economy Testing Works

Why do the EPA fuel economy numbers almost always seem to be off base? It has a lot to do with the way the EPA evaluates new cars and trucks for their energy consumption.


Car Smarts: Green Driving

Car Smarts: Green Driving

Find out how green your knowledge is with the green driving quiz. See more »

How the California Air Resources Board (CARB) Works

How the California Air Resources Board (CARB) Works

The California Air Resources Board regulates air quality in the state of California. Find out more about the California Air Resources Board in this article. See more »

How much extra gasoline would Americans use if daytime running lights were mandatory?

How much extra gasoline would Americans use if daytime running lights were mandatory?

Daytime running lights use gas to stay lit when the car is on. Learn how daytime running lights use gas and the amount it takes to power these lights. See more »

Can carbon fiber solve the oil crisis?

Can carbon fiber solve the oil crisis?

Carbon fiber is five times as strong as steel and it's much more lightweight. Learn about carbon fiber and how it could solve the oil crisis. See more »

Top 10 Green Driving Tips

Top 10 Green Driving Tips

The top 10 green driving tips will help you save gas and money. Read about the top 10 green driving tips and help out the environment. See more »

How Car Sharing Works

How Car Sharing Works

The Swiss popularized car sharing after World War II. Learn why car sharing spread across the globe and how car-share companies work. See more »

How to Start a Carpool

How to Start a Carpool

A carpool saves money, helps the environment and allows members to talk before work/school. Learn how to start a carpool and about carpool etiquette. See more »

How the 2008 EPA Fuel Economy Ratings Work

How the 2008 EPA Fuel Economy Ratings Work

The 2008 EPA fuel economy ratings have made the window stickers on many cars look drastically different. Learn about the 2008 federal fuel economy ratings. See more »

How Alternative Fuel Pricing Works

How Alternative Fuel Pricing Works

Alternative fuel pricing is different from petroleum-based fuel products. Find out which factors effect alternative fuel pricing in this article. See more »

Can a car get 100 miles per gallon?

Can a car get 100 miles per gallon?

The 100 mpg car is being promoted by Google.org in an effort to reduce oil use and harmful emissions. Learn all about Google's 100 mpg car program. See more »