53 Articles
Official
2019 Jaguar I-Pace gets official 234-mile range rating

Its range figure is good, but its efficiency rating lags the competition

Its range figure is good, but its efficiency rating lags the competition.

Report
Tesla developing battery preheating feature to lessen cold-weather drain

Owners will be able to restore range lost to bringing the battery up to optimal temp via mobile app.

Owners will be able to restore range lost to bringing the battery up to optimal temp via mobile app.

Opinion
No, a BMW 7 Series is not kinder to the atmosphere than a Tesla

A closer look at how much energy an EV uses.

Martin Karo's argument confuses fuels and uses incomplete comparisons.

Green
New heavy-duty vehicles MPG rules could save 2 billion barrels of oil

The efficiency and emissions standards cover model years 2018 through 2027.

The government expects to also save 1.1 metric tons of GHG emissions through 2027.

Study
Study: autonomous vehicles could improve MPG 10% in EPA tests

CMU offers the EPA info on how to incorporate self-driving tech into testing.

Incorporating autonomy into EPA driving cycles could influence how automakers program their cars.

Study
Flying is more efficient than driving

A recent study from the University of Michigan Transportation Research Institute finds that planes are more efficient than cars by a wide margin. The gap between them isn't shrinking quickly, either.

Official
New Daimler Supertruck boasts incredible 115% mpg improvement

The Daimler entry into the Department of Energy Supertruck program beats the original goals by 115 percent. The semi uses a massive amount of tech to get an average of 12.2 miles per gallon.

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Figuring out exactly how much it costs to charge Tesla Model S

Home Tests Show Anywhere Between 82 and 90 Percent Efficiency

Is the Tesla Model S an electricity guzzler? One driver trying to answer that question says it does gobble down more juice than previously thought, but it's not time to make Hummer jokes just yet.

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How to get incredibly accurate information on your EV's charging power

One would think that paying about $300 to receive a bit of bad news about electric-vehicle charging would be counterproductive. But the fine folks at Teslarati believe that truth is beauty, and they're willing to pay a little extra for the straight dope.

Official
Toyota finds 10% MPG improvement in hybrid PCU

Keeping up its from-all-angles approach to efficiency, Toyota has found yet another way to eke out up to ten percent more precious MPGs in its hybrid vehicles, this time electronically. The automaker has announced the development of new silicon carbide (SiC) power semiconductors for use in power control units, which it will begin testing on Japanese roads within the next year.

Los Angeles
VW's Krebs talks hydrogen, says 'most efficient way to convert energy to mobility is electricity'

Volkswagen has staked out a claim to be the industry leader in electric vehicles. One of the executives leading the VW Group into an e-mobililty future is Rudolf Krebs, who took over VW's electrification efforts back in 2010. Today, he is the group commissioner for electric drive systems for the VW Group, and he took part in a green ener

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Toyota donates engineers, not money, to country's largest anti-hunger charity

Key to production of any kind is efficiency - the ability to achieve maximum productivity with minimal effort or waste. Toyota has become a master of efficiency, with streamlined manufacturing operations around the world. In fact, the Japanese brand has become so well known for efficient operations that it now offers consulting services for organizations and companies outside the auto industry.

MIT: U.S. could have much better MPG, but our cars got fat

Americans have gained weight over the last thirty years, and not just around the midsection. American garages and driveways have also put on pounds as cars have become larger and more powerful. A new study from MIT says that, if not for the increase in vehicle weight, we could already be exceeding vehicle mileage targets still years away.

Report
Auto applications sought for new advanced metal that's 100x lighter than Styrofoam [w/video]

Automakers are being pinched to increase safety and improve fuel efficiency, but those two goals often work against each other. That could change thanks to a material that is 99.99-percent air.

Report
Auto applications sought for new advanced metal that's 100x lighter than Styrofoam [w/video]

Automakers are being pinched to increase safety and improve fuel efficiency, but those two goals often work against each other. That could change thanks to a material that is 99.99-percent air.

Report
Did Volkswagen tamper with its efficiency graph in Germany?

Every once in a while you'll find an accidental lie on the Internet...

Report
Did Volkswagen tamper with its efficiency graph in Germany?

Every once in a while you'll find an accidental lie on the Internet...

Which automaker is the most productive?

Volkswagen piled on some big-time profits for the 2010 model year, as the German automaker finished the year in the black with a staggering $10 billion. VW sales were up, too, with 7.1 million units moved for the year. And compared to VW's long-term production plans, 7.1 million is a relative drop in the bucket – the German automaker plans to build 10 million vehicles per year by 2018, making the massive conglomerate the largest automaker in the w

Google's investment in Transphorm could give electric cars more range

Compared to gas and diesel vehicles, electric cars are incredibly efficient. It's a good thing too, since their batteries hold only a small fraction of the energy in a typical gas tank. As with most any technology, though, there is always room to boost efficiency. This is where start-up Transphorm comes in, and perhaps in a big way. Why? Because Transphorm just secured $20 million from backers Google Ventures, Kleiner Perkins Caulfield & Byers, Foundation Capital and Lux Capital. The company

Mercedes-Benz will do the 'unthinkable' to go green

2012 Mercedes-Benz CLS – Click above for high-res image gallery

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