Mitsubishi has admitted to “improper conduct in fuel consumption testing” of engines fitted to a total of 625,000 cars.

A team of undergraduate students at MIT have developed a shock absorber that actually generates electricity from bumps in the road. This results in up to a 10 percent improvement in overall vehicle fuel efficiency.

Yeah, you're laughing at this weird-looking half-egg-shaped concept car now, but when gasoline costs $10 a gallon not too long from now, this 330 mile-per-gallon Aptera concept car might start looking pretty damn good. It cops that high-mpg efficiency with a fuel-sipping diesel engine lashed onto hybrid technology,…

We like to ooo and ahh over gadget-y cars like the Honda Civic Hybrid and Toyota Prius, especially when rumors swirl about turbocharged engines getting 100 miles per gallon. But then we saw this winner of the SAE Super Mileage Competition, a car which racked up a jaw-dropping 3145 miles per gallon. This is a…

While it's not quite a Lexus, it is a start. A enterprising fellow from Britain invented a car that he believes can go 8,000 miles before it needs a fill up. It cost only $3,689 to build and weighs 126 pounds. The inventor, Andy Green, is no stranger to inventing fuel efficient cars and is the current record holder…