• 2012 Kia Rio Sedan

    Stop-start technology is an easy way of improving a car's fuel economy by a few MPG and lowering emissions - especially if you regularly commute in heavy traffic. However, its use is contentious for many carmakers as the U.S. EPA official fuel economy figures are completely unaffected, even if there are gains to be had in the real world - from 3-5 percent. Kia is the latest maker to adopt the technology and the best news for drivers on a budget is that it'll be available on the new 2012 Kia Rio. Like the old Rio, it's one of America's cheapest cars at only $14,350, but unlike the old Rio it's...

  • SignalGuru
    SignalGuru Uses Crowdsourcing To Time Stop Lights & Save Gas

    Stopping is inefficient. When a vehicle comes to a complete stop, it wastes energy, frittering away gas while idling, and consuming even more to get moving again. This is in part why we're seeing stop-start technology become commonplace in today's greener vehicles. But what if drivers didn't have...

  • 2011 Porsche Panamera V-6
    2011 Porsche Panamera V-8 Models Made More Efficient

    New V-6 versions of the Porsche Panamera has just on sale in the U.S. but the original V-8 models (S, 4S and Turbo) introduced last year have also been updated for the latest model year. Due in August, the new V-8 powered 2011 Porsche Panamera lineup is coming onto the market with an even higher...

Follow Us on Instagram @motorauthority

News First Drives Auto Shows Photos Videos Spy Shots