Gas Mileage

 
GM debuts 9-speed automatic, offering 2-percent efficiency improvement

GM debuts 9-speed automatic, offering 2-percent efficiency improvement

In order to meet stricter emissions standards, automakers are scrambling for any efficiency gain they can get in internal-combustion engines and powertrains. One of the most popular options for increasing efficiency is transmissions with a greater number of gears. Where 6-speed transmissions were... read more

December 6, 2016 by -
 
U.S. Capitol Building

EPA decides to maintain vehicle emission limits through 2025

The U.S. Environmental Protection Agency (EPA) has decided to maintain its existing limits on emissions of greenhouse gases for light-duty vehicles through 2025. Enacted by... read more December 1, 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


 
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


 
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


 
2017 Ford F-150

2017 Ford F-150 pickup gas mileage rises to 21 mpg combined

The 2017 Ford F-150 full-size pickup truck gets a slight fuel-economy bump this year, via the addition of a new 10-speed automatic transmission and an updated 3.5-liter... read more October 6, 2016 by


 
Infiniti VC-Turbo engine

Infiniti variable-compression engine: more complexity, incremental gains

To meet stricter global emissions standards, carmakers are trying to squeeze every last bit of efficiency out of internal-combustion engines. That has led Infiniti to turn to... read more October 6, 2016 by


 
Chris Grundler, director of EPA Office of Transportation and Air Quality [photo: EPA via Flickr]

EPA's emissions sleuth: the most powerful man you've never heard of

Current Corporate Average Fuel Economy standards require U.S. automakers to achieve a fleet average of 54.5 mpg (equivalent to roughly 40 mpg on the window sticker) by 2025... read more October 5, 2016 by


 
U.S. Capitol Building

Michigan representative: roll fuel economy rules back to 'reasonable' level

Right now, the debate over the future of Corporate Average Fuel Economy (CAFE) standards is in full swing. Today, they call for a fleet average of 54.5 mpg (or about 38 mpg... read more September 27, 2016 by


 

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