Fuel Efficiency

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Porsche is expanding the Cayenne SUV lineup in the United States with a fuel-efficient diesel option. Read the specifics here. | MORE

The findings in this survey don’t really surprise us. Young drivers seek fuel efficiency and technology, all bundled into an inexpensive package. Find out what manufacturers are doing to satisfy them here. | MORE

If your car calls for premium, can you use regular gasoline? Maybe, but it might not save you money. Get the story on gas grades here. | MORE

Who's at the top of the miles-per-gallon pack for 2011? Not surprisingly, a whole bunch of hybrid vehicles. Take a look at the 2011 model-year vehicles with top fuel economy as rated by the EPA. | MORE

Considering a hybrid? Read what our editors thought of the Chevrolet Volt. | MORE

Taking staycations and ditching extra weight are some of the ways to save gas this summer. Read all the tips here. | MORE

The 2012 Hyundai Sonata builds on its well-rated predecessor with more safety, technology and convenience options. Read the full review. | MORE

Join associate technical editor Brad Constant and four of his buddies for a trip in the 2012 Hyundai Veloster. Watch their video review here. | MORE

Fire investigators in Texas are blaming a Fisker Karma plug-in hybrid for a blaze that destroyed a suburban Houston garage. Get the latest details here. | MORE

The 2012 Kia Optima SX might seem like a man's sports sedan, but it is female friendly. Our staff teams up to tackle the review. Read our perspectives here. | MORE

Thanks to a new partnership between BMW and Real Goods Solar, ActiveE drivers can now get a significant discount on solar panels to be used to charge their electric vehicles. | MORE

Experts say the interest in fuel-efficient vehicles is closely related to current fuel prices. Read on for details. | MORE

The base 2013 Buick Regal will be equipped with the brand's eAssist system, which uses an electric motor to improve fuel economy. Read more here. | MORE

Ford has dropped the Escape V6 for 2013 in favor of more fuel-efficient, turbocharged four-cylinder power, a move that seems to have paid off. Read more about Escape fuel economy here. | MORE

The Kia Rio fares well in the competitive compact class. Read our full review here. | MORE

Pickup-truck and big-SUV drivers need more than just cruise control to improve gas mileage. Read how to make your truck more fuel efficient here. | MORE

The 2012 Chevrolet Cruze LTZ is a compact sedan with enough fuel efficiency and technology to make it a top seller. Read the full review. | MORE

Which cars are shopautoweek.com readers are searching most? Gas mileage plays a part: two of the five get 30 mpg combined or better. | MORE

Spring has sprung, and, along with Earth Day, it's had us thinking about green cars and fuel efficiency. Check out our latest articles on gas mileage, green driving and more here. | MORE

The 2013 Acura ILX is entry-level luxury with an emphasis on fuel efficiency. Read the full review. | MORE

To put the new Toyota Prius C to the gas-mileage test, we hit the road to see how far we could get on one tank of gas. | MORE

Bob Lutz, the influential former General Motors vice chairman and father of the Chevrolet Volt, has spoken out in favor of electric cars as part of a comprehensive national security policy. Read about his reasons here. | MORE

The numbers are in: Clean-diesel, hybrid and electric car sales are increasing at a faster rate than the rest of the market. Read more here. | MORE

Ever wonder how the Environmental Protection Agency comes up with the estimated fuel economy on cars? Find out here. | MORE