Fuel Efficiency

Fuel efficiency has become an extremely important topic in today's world because of rising gas prices, the need to cut our carbon footprints, and the need to cut dependence on oil-rich nations. Check out these great articles on fuel efficiency.


What sets the new electric car apart from its competition, and what features have people so excited?

Scientists created an algorithm that matched people for social, as well as geographic compatibility, increasing rates of carpooling.

The world's second-most populous nation is preparing to make a change, and it could have big implications for business and the environment.

Has the Volkswagen diesel scandal soiled clean diesel’s reputation beyond repair?

The claims from the fuel additive bottles seem to scream at you from the shelf of your local auto parts store: add me to your tank and I'll make everything better! But do they really do that? Well, it depends on your car and on your needs.

Everybody says it so it must be true, right? "Buy your gas in the morning when it's cooler, and it will last longer." Well, the science behind this theory is sound, but in reality, it won't save you much.

Car enthusiasts swear that driving a car with a manual transmission is more fun than an automatic. Manuals have also historically boasted better fuel economy, but is that still true today?

Once upon a time, you bought a car with a manual transmission if you wanted to save at the dealership as well as at the pump. But times (and transmissions) have changed — manuals might not be the best at fuel economy anymore.

When is a car like a golf ball? Simple: when it has dimples! Now why, you might ask, would anyone want a dimpled car? As researchers on smart morphable surfaces are discovering, a dimpled surface can actually help an object travel faster and farther.

Fifteen years may seem like a long time, but if automakers are serious about meeting the new Corporate Average Fuel Economy (CAFE) standards, there's not much time to plan a strategy.

A diesel-powered car may cost a little more initially, but you'll make up the difference in fuel savings, right? Find out if your diesel-powered savings plans actually add up.

In the early 1900s, vehicular propulsion was a free-for-all, with gasoline-, electric- and steam-powered cars all vying for popularity. Are we returning to the good ol' days of the automobile?

If air is already 78 percent nitrogen, is there really any benefit to paying extra for nitrogen tire inflation? And how can nitrogen-inflated tires save fuel, anyway?

Some drivers are drawn to hypermiling because of environmental concerns, while others simply seem to share a passion for fiscal thriftiness. But are there really any safe hypermiling techniques?

In general, hypermiling is a dangerous practice. In fact, some of the most effective hypermiling strategies work only because the driver intentionally sacrifices control of the vehicle.

Some of these eco-mods appear to be logical, while others seem a bit like wishful thinking. Can the right eco-mod for your car save you money at the pump?

As they say, "Your mileage may vary." But if you're new-car shopping, you probably want a reliable fuel economy number. Where do you go? Who can you trust?

There are two ways to measure your car's fuel economy: miles per gallon (mpg) and gallons per 100 miles (g/100m). Do you know how to calculate both of these figures?

You're not here looking for ways to not drive your car. Nope, you want advice that will keep you trucking on the cheap, so let's get to it. Here's a freebie: Tying four mattresses onto the top of your car is not super fuel efficient.

Driving the right vehicle is important when you have a busy life filled with work, school, family and hobbies. Here's a quick guide to help you choose the right vehicle for any occasion.

Watching a field of Formula E race cars circle a racetrack is going to require some adjustment on the part of the spectators. Why? Because they're quiet. Chirping-crickets quiet.

The U.S. Navy says it could make about 100,000 gallons (378,541 liters) of JP-5 jet fuel each day using ocean water. But how long will it be before the Navy's plan is plausible?

Will these hollow strands of laser-cut nickel revolutionize car manufacturing? And would you really want a car body that's just 0.01 percent solid? Maybe -- it's pretty resilient stuff.

Specially engineered Flexible Fuel Vehicles (FFVs) can tolerate an E85 mixture of gasoline and ethanol. But will ordinary cars and trucks be able to stand up to the new blend?