Fuel Efficiency

 
EPA keeps car-emission rules to 2025; what happens under Trump?

EPA keeps car-emission rules to 2025; what happens under Trump?

Two days ago, the U.S. Environmental Protection Agency issued a ruling that existing limits on tailpipe emissions of carbon dioxide for 2022 through 2025 should remain in place. The EPA's carbon limits correspond exactly to NHTSA standards for corporate average fuel economy, and the EPA decision... read more

December 2, 2016 by -
 
2017 Honda Civic Hatchback

Hatchback renaissance: are they seen as utility vehicles now?

The U.S. may be in the midst of a somewhat unlikely hatchback renaissance. Three- and five-door body styles have never been as popular in the U.S. as in other markets, with... read more November 29, 2016 by


 
2017 Fiat 500S

Fiat to slash prices on aging small car lines: report

When it launched in the U.S. back in late 2010, the current Fiat 500 marked the return of the storied Italian brand to these shores. The little three-door hatchback gave... read more November 28, 2016 by


 
2017 Nissan Sentra Nismo

Start-stop systems to soar in number over next decade

Plug-in electric cars are slowly becoming more common, but internal-combustion engines will remain a significant presence on the world's roads for decades to come yet. That... read more November 16, 2016 by


 
EPA gas-mileage label (window sticker), design used starting in model year 2013

EPA gas-mileage labels accurate, helpful, unlike 2005: Consumer Reports

Car buyers remain aware that the real-world fuel economy of new vehicles may not match the ratings on their window stickers. The year-old Volkswagen diesel scandal has also... read more November 15, 2016 by


 
2016 Kia Optima Hybrid

Best deals on hybrid, electric, fuel-efficient cars for November 2016

It's once again time to look at the best deals on green cars. As we get further into the 2017 model year, manufacturers are becoming more eager to eliminate leftover... read more November 11, 2016 by


 
2017 Honda CR-V

Are you driving a car, a crossover, an SUV, or a truck? Do you care?

Are you driving a car or a truck? The answer may be harder to determine than you think. U.S. safety and emissions regulations generally split cars and trucks into two... read more November 9, 2016 by


 
2016 Renault Clio RS

Could an EU switch to on-road emission tests allow more pollution?

The Volkswagen diesel scandal convinced European regulators to switch from laboratory emissions testing to tests that involve actual, on-road driving. This could prevent... read more November 8, 2016 by


 
Portable Emissions Measurement Systems (PEMS) on a Peugeot 308

Emission debate in Europe: should new EU agency test, or each nation?

The Volkswagen diesel scandal has brought increased scrutiny on how new cars are tested for emissions and fuel economy. VW's use of "defeat device" software to cheat on... read more November 7, 2016 by


 
Ford Mustang GT at 2016 MPG Marathon, U.K.

Ford Mustang is unlikely winner of UK gas-mileage marathon

The Ford Mustang isn't usually the first vehicle that comes to mind when thinking about fuel-efficient cars. But a new Mustang recently won the title of most-improved fuel... read more November 4, 2016 by


 
Fuel gauge

EPA reports show automakers meeting fuel-economy, carbon emission rules

Low gas prices and high sales of crossovers and SUVs have led critics of current U.S. emissions standards to question whether automakers can continue meeting those standards... read more November 3, 2016 by


 
Mercedes-Benz belt-driven starter generator (RSG)

New Mercedes engines get more complicated to meet emission rules

While it plans to launch 10 new electric cars by 2025, Mercedes-Benz is far from done trying to improve the efficiency of internal-combustion engines. The German luxury... read more November 1, 2016 by


 
2012 Volkswagen Up minicar (German model), road test, Catskill Mountains, NY, May 2012

Tougher testing for emissions may mean bigger engines, but why?

Stricter global emissions standards have led many automakers to downsize engines, but that trend may be about to reverse itself. Cutting displacement is a relatively... read more October 31, 2016 by


 
2016 Nissan Leaf

Carmakers must cut carbon rapidly to evolve, shareholders say

Stricter global emissions standards are putting significant pressure on carmakers to improve fuel efficiency and make greater use of electric powertrains. But that may not be... read more October 18, 2016 by


 
2017 Toyota Corolla, test drive, Ojai, California, Sep 2016

2017 Toyota Corolla: first drive of updated compact sedan

The Toyota Corolla has been almost the default compact sedan among North American buyers for what seems like decades now. In good years, more than 350,000 are sold to retail... read more October 14, 2016 by


 
Tesla Autopilot

How safe is Tesla Autopilot? Parsing the statistics (as suggested by Elon Musk)

One of the tools Elon Musk and Tesla Motors have used to defend the safety of its Autopilot software is the dark and perplexing art of statistics. After a fatal... read more October 13, 2016 by


 

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