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Fuel Efficiency

 
EPA To Tighten Gas-Mileage Test Rules, Audit More Ratings From Carmakers

EPA To Tighten Gas-Mileage Test Rules, Audit More Ratings From Carmakers

The EPA plans to audit more of the gas-mileage test data submitted by carmakers, and tighten its rules for that testing, after fuel-economy ratings on almost 20 recent models proved to be too high and had to be reduced. The move follows the highly publicized rollbacks of gas-mileage ratings over... read more

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Achates opposed-piston two-stroke diesel engine, as it would be packaged for truck installation

Achates Closer To Production Of Radically Efficient Two-Stroke Truck Diesel

Suppose you could take an old engine concept discarded in the 1970s, add modern fuel metering and injection control hardware and software, and offer a compact powerplant that... read more October 15, 2014 by 


 
2014 Chevrolet Spark, Catskill Mountains, Apr 2014

One Million Chevrolet Spark Minicars Sold Globally Since 2009

It may be a small car, but the Chevrolet Spark has made a big impact globally. On sale in dozens of countries, the Spark is one of General Motors' most-globalized models, and... read more October 14, 2014 by 


 
Gas pump

U.S. Will Meet Fuel-Economy Goals Despite Higher Truck, SUV Sales, EPA Says

New-car average fuel economy has steadily risen over the past few years, as carmakers work to meet stricter U.S. Corporate Average Fuel Economy standards. It's natural to... read more October 14, 2014 by 


 
Toyota C-HR concept, 2014 Paris Auto Show

Toyota To Launch Subcompact Utility Vehicle As Nissan Juke Competitor

Subcompact SUVs, which often blur the line between crossovers and all-wheel drive hatchbacks, are growing increasingly popular all over the globe. In the U.S., models like... read more October 13, 2014 by 


 
2015 Ford F-150

Steel Vs Aluminum: Which Wins For Fuel Efficiency AND Cost?

As carmakers try to meet stricter global emissions standards, they are using aluminum--and more of it--to save weight. Previously reserved for high-end luxury and sports... read more October 13, 2014 by 


 
2015 Subaru Impreza

2015 Subaru Impreza Updated, Fuel Economy Rises To 31 MPG Combined

We now have details on the updated 2015 Subaru Impreza compact sedan and hatchback, which get a slight bump in fuel economy as well as some styling and content changes. The... read more October 10, 2014 by 


 
2013 Ram 1500  -  engine start-stop system

Start-Stop In U.S.: 7% Now, 57% In 2020, But Drivers 'Resist': Analyst

Start-stop systems have finally started to arrive on U.S. new cars in noticeable numbers. The systems, which simply turn off a car's engine when it's sitting stationary and... read more October 9, 2014 by 


 
Traffic in Atlanta, Georgia during rush hour (via Wikimedia)

Which States Have The Most Efficient Cars And Homes? Study Ranks Them

Both state governments and individual consumers are striving for increased energy efficiency, so it's natural to wonder how much progress is being made. WalletHub recently... read more October 9, 2014 by 


 
2015 Honda CR-Z

2015 Honda CR-Z Hybrid Two-Seat Coupe: Unchanged For New Model Year

It's been an uncertain year for the Honda CR-Z two-seat hybrid coupe. The CR-Z was discontinued in Europe back in February, leading to speculation that the slow-selling... read more October 9, 2014 by 


 
2015 Subaru Legacy 2.5i, Catskill Mountains, NY, Sep 2014

2015 Subaru Legacy Gas Mileage: We Test Both 2.5i And 3.6R

Subaru sales have surged over the last decade, taking the quirky Japanese brand from its Snow Belt niche into more and broader markets. This year, the redesigned 2015 Subaru... read more October 7, 2014 by 


 
2015 Ford Fiesta

Small Engines May Use More Fuel Than You Expect, In Europe Especially

Decreasing an engine's displacement is one of the most straightforward ways to increase fuel efficiency. Or is it? According to research firm Emissions Analytics, the high... read more October 7, 2014 by 


 
2015 Honda Fit EX-L Navi, Catskill Mountains, NY, Oct 2014

2015 Honda Fit Gas Mileage: True 40-MPG Subcompact, Or Not?

The 2015 Honda Fit subcompact is an entirely new model, and for North America, it's built in a new plant in Mexico. That means that its launch was necessarily slow and... read more October 6, 2014 by 


 
2015 Chevrolet Trax

2015 Chevrolet Trax Crossover: Price To Start At $21,000

General Motors has released prices for the 2015 Chevrolet Trax subcompact crossover. Based on the Chevrolet Sonic--and essentially a lower-cost twin of the Buick Encore--the... read more October 3, 2014 by 


 
2012, 2013, and 2014 Toyota Prius

What Do Hybrid Owners Say About Their Cars? How About Everyone Else?

As hybrid cars become more commonplace, it's worth finding out whether people's views of them are changing. A new study from the University of Michigan Transportation... read more October 1, 2014 by 


 
2015 Ram 1500 EcoDiesel

2015 Ram 1500 EcoDiesel Production To Double: 1 In 5 Trucks To Get Diesel

Increased fuel efficiency has apparently struck a chord with full-size pickup-truck buyers: Chrysler said yesterday it would double production of its 2015 Ram 1500 EcoDiesel... read more October 1, 2014 by 


 
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