Fuel-saving Devices

You may have seen ads for so-called fuel-saving devices that make outrageous claims about their effectiveness. But are there any that actually work? Get the facts about fuel-saving devices in these articles.

A flex engine sounds like some sort of futuristic motor, but you'd be surprised how long this technology's been around. Is it greener or more efficient than a gas-guzzling engine? Flex your brain muscle and find out.

Improving mileage is only one part of dealing with rising fuel costs. Some cars can accept gas blended with ethanol. But how does the vehicle adjust to the switch?

Personal rapid transit systems offer a public transportation option that's a bit more comfortable than the average subway or bus. In what ways is a pod car like your own car?

There’s a saying about sports cars: They can pass anything on the road -- except a gas station. Here are 10 sports cars that break the stereotypical gas-guzzler image.

You've seen lots of fuel-saving devices advertised on late night TV. But how can you know the gas-saving product you ordered in a sleep-deprived stupor will actually live up to its promises?

Running a car on compressed air isn't exactly a new idea. In fact, the technology dates back to the early 1930s. So what makes Magnetic Air Motors' magnetic air car unique?

They said it couldn't be done: No one could build a car capable of traveling 100 miles or more on a single gallon of gasoline. They were wrong.

We don't look at low-energy vehicles (LEVs) as outliers anymore. In fact, they've smoothly integrated themselves into the flow of traffic. Are LEVs now the new norm?

If you're a motorcyclist and you're interested in flexible fuel technology, well...you have limited options. Depending on where you live, you might even have to import your bike.

By 2025, it's quite possible that the average passenger automobile will be capable of getting more than 50 miles per gallon (21.3 kilometers per liter) — if it runs on conventional fuel at all.

During times of rising gas prices, which seems to be all the time, vehicle owners are on the lookout for a well-priced product that can save them a few dollars in the long run.

A fuel cell uses a positive electrode (the cathode) and a negative electrode (the anode) with an electrolyte in between for conducting charged particles. How much do you know about fuel cells?

By 2025, the Obama administration would like to see the average vehicle rated at 54.5 mpg, or 37 mpg on a window sticker. Considering that the industry has made just over 2 percent gains a year since 2007, this is no small feat.

To make natural gas a viable fuel for vehicles, it must be compressed. This allows more fuel to be stored per volume, among other things. How much do you know about natural gas?

Do you ever think about what cars will look like in the future? Check out this amazing Cars of the Future graphic!

Anyone who's seen the famous, grainy footage of the Hindenburg disaster is familiar with the idea that hydrogen ignites easily. Burning unlocks stored energy, making hydrogen useful as a fuel.

Natural gas generators, as the name suggests, use natural gas -- which includes the propane used for backyard grills or the methane that utilities supply through underground lines -- to generate electricity.

Instead of burning fuel like conventional engines, hydrogen fuel cells work through an electrochemical process. To produce electricity, hydrogen atoms are ionized on one side of an electrolyte membrane. How much do you know about hydrogen fuel cells?

Why fuel additives won't improve performance and gas mileage. Learn why fuel additive won't improve proformance and gas mileage in this article.

For as long as we've complained about gas prices, there's been an army of inventors offering devices to stretch our mileage further. But which ones work and which are hoaxes?

Mileage-boosting gadgets have been around for years, and they seem to make a comeback every time gas prices spike. But do any of them actually work?

Fuel prices are on the rise, and with gas getting so costly, those fill-ups are no trivial expense. What can you do to help your vehicle save fuel?