Efficiency

 
Trump names vocal renewable-energy critic to oversee...renewable energy

Trump names vocal renewable-energy critic to oversee...renewable energy

While the news headlines on President Donald Trump mostly address potential scandals, his administration has also lagged significantly in appointing top-level officials to run government agencies. Those that have been appointed often have an adversarial relationship to the missions of the agencies... read more

May 22, 2017 by -
 
2017 Chevrolet Bolt EV - 2016 Consumer Electronics Show

2017 Chevy Bolt EV electric car: 238-mile EPA range rating, 119 MPGe combined

There will be a lot riding on the tall, square shoulders of the 2017 Chevrolet Bolt EV when it reaches the first Chevy dealers late this year. It will be the first... read more September 12, 2016 by


 
2015 Tesla Model S 70D in new Ocean Blue color

All-wheel-drive Tesla electric cars rated more efficient, but how?

One of the myriad advantages of electric propulsion, we’re told, is the efficiency of all-wheel drive. The AWD versions of the Tesla Model S, for example, are rated as... read more April 14, 2016 by


 
2015 Volkswagen e-Golf  -  Long-term test car

Volkswagen e-Golf Climate Control: How Much Does A/C Impact Range?

In Portland, Oregon, where we’re putting our long-term Volkswagen e-Golf to the test, it’s been one of the hottest summers on record. So far in the summer of... read more August 23, 2015 by


 
Possible fourth-generation Toyota Prius prototype. Video by Vimeo user Savior1974.

Next Toyota Prius Hybrid: 40-Percent Thermal Efficiency From Engine, Toyota Says

You may not hear about the thermal efficiency of engines much: It's the ratio of how efficiently they use the energy in the fuel they burn. Conventional gasoline engines have... read more May 22, 2015 by


 
Gas pump

New Metric For Car Efficiency: Miles Per Dollar Spent On Energy?

It's downright confusing trying to calculate how much it costs to run green cars, whether it's a 50-mpg Toyota Prius or a highly efficient electric car like the 124-MPGe BMW... read more January 16, 2015 by


 
'MPGe explained' video screencap

What Is MPGe Anyway? What Is Efficiency For Electric Cars?

Electric cars don't use "fuel" as such, but you'll still find fuel-economy ratings on their window stickers. Those MPGe figures have mystified many potential plug-in electric... read more January 6, 2015 by


 
2013 Tesla Model S and 2014 BMW i3, Hudson Valley, NY, Nov 2014

Tesla Model S Vs BMW i3: Electric-Car Efficiency Comparison Test

The EPA has dubbed the all-electric 2014 BMW i3 the most efficient production car sold in the U.S., with an impressive 125 MPGe rating--the best of any electric vehicle. By... read more November 18, 2014 by


 
2015 Volkswagen e-Golf

2015 Volkswagen e-Golf Rated At 83 Miles Range, 116 MPGe

The 2015 Volkswagen Golf is the latest car range to be offered with an electric powertrain as well as internal-combustion engines. Now, the EPA range and efficiency ratings... read more November 3, 2014 by


 
Terry Hershner competing in 2014 Vetter Challenge for motorcycle with lowest energy cost

Pushing Limits Of Electric Motorcycles: Terry Hershner Wins Vetter Challenge

If you follow electric motorcycles, you'll likely have heard of the legendary Terry Hershner. Terry likes to ride. Scratch that: Terry loves to ride. He also loves pushing... read more September 5, 2014 by


 
Gas pump

Auto Industry Doing Fine In Meeting Gas-Mileage Goals, It Turns Out

The auto industry came very near to the precipice in 2009, and it agreed to significant new regulations to enable it to step back from the brink. Now, it turns out that it's... read more August 5, 2014 by


 
2014 Mercedes-Benz B-Class Electric Drive  -  First Drive, May 2014

2014 Mercedes-Benz B-Class Electric Car: 87 Miles Range, 84 MPGe

The 2014 Mercedes-Benz B-Class electric car hasn't quite reached dealerships yet--several are telling customers it could be next week--and its EPA ratings for range and... read more July 9, 2014 by


 
Ohio Statehouse

Ohio Turns Its Back, Thumbs Its Nose At Energy Efficiency

This past Friday the 13th proved to be particularly unlucky for renewable-energy advocates in Ohio. That was the day the state legislature passed SB 310, a bill to halt the... read more June 26, 2014 by


 
2014 Mazda 3 s Grand Touring  -  First Drive

Could Future Mazda Engines Emit Less CO2 Than Electric Cars?

Is it possible to make a gasoline engine so efficient that it would emit less carbon dioxide per mile than is created by generating electricity to run an electric car over... read more March 25, 2014 by


 
2013 Nissan Leaf

2013 Nissan Leaf Final Ratings Issued: 115 MPGe, 75 Miles Of Range

It often takes awhile to get gas-mileage ratings onto the EPA's official website, and it's no different with electric-car efficiency numbers. Now we have the final ratings... read more May 15, 2013 by 10


 
2012 Zero S electric motorcycle and 2012 Mitsubishi i-MiEV electric car [photo: Ben Rich]

Got An Energy-Efficient Household? Drive Electric For Free!

Among the first questions any electric car owner hears are (1) What is the range? (2) How long does it take to charge and (3) What does it cost to operate? Many drops of ink... read more April 16, 2013 by 17


 

 
 

 
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