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.

How the 2008 EPA Fuel Economy Ratings Work

Word on the street is gas prices are soaring. But as people begin to scour auto dealers for fuel efficient cars, they might notice efficiency ratings have changed a bit.

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.

How to Get Better Fuel Economy

With gasoline prices continuing their wild fluctuations many consumers are demanding more fuel-efficient cars and trucks. We’ll give you tips to improve your car’s gas mileage and tell you how to buy a fuel-efficient vehicle.

How much gasoline does the United States consume in one year?

There are a couple of different ways to discover the answer to this question, but here is one way to estimate it. Read on to learn how much gasoline the United States consumes in a year.

If daytime running lights were mandatory in the U.S. and all vehicles had them how much extra gasoline would that use each year?

Headlights require power, and a car's engine produces power using gasoline. Find out how much extra gasoline would be used each year if all vehicles were required to have daytime running lights.

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?

How a Hydrogen-Boosted Gasoline Engine Works

Faced with rising gasoline costs, automakers worldwide are working overtime to improve fuel economy while meeting strict emissions requirements. One promising way is to add hydrogen to the fuel/air mixture in a conventional gasoline engine.