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2014 Mercedes-Benz E 250 BlueTec Diesel: Fuel-Economy Review

2014 Mercedes-Benz E 250 BlueTec Diesel: Fuel-Economy Review

In recent years—especially in the time since EPA fuel economy ratings have become more realistic—40 miles per gallon on the highway has become like a sort of high-water mark for non-hybrid cars. Even in 2014, there remain relatively few subcompact or compact sedans that top the 40-mpg... read more

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Audi A3 Sportback TDI at 2014 New York Auto Show

Audi A3 TDI Sportback Unveiled At NY Show, To Join Sedan Model Next Year: Live Photos

Audi will debut its new A3 Sportback TDI at today's New York Auto Show. The four-door hatchback will join the A3 sedan TDI in the summer of 2015, as a sportier option for... read more April 16, 2014 by 


 
2015 Chevrolet Cruze

New York Auto Show: Green Cars And Concepts Roundup

The 2014 New York Auto Show is fast approaching, and as usual a small roster of green vehicles will be making their debuts. This year it's mainly about production vehicles... read more April 14, 2014 by 


 
2014 Mercedes-Benz E250 BlueTec

Diesel Or Hybrid? Road & Track Says Benz Beats Prius

Car shoppers today are spoiled for choice when it comes to fuel-efficient vehicles. When else in history have we had the choice between gasoline, diesel, biofuel, natural... read more April 10, 2014 by 


 
2015 Audi A3 Sedan  -  First Drive, March 2014

2015 Audi A3: Small Luxury Sedan With TDI Diesel Option

A decade ago, the concept of a sporting or luxurious sedan with a diesel engine was virtually unthinkable in the U.S. They had neither the refinement, nor the performance to... read more April 2, 2014 by 


 
2014 BMW 535d xDrive, Catskill Mountains, Feb 2014

2014 BMW 535d xDrive Diesel Sedan: Fuel Economy Drive Review

For 2014, BMW offers diesel engines in its three sedan lines, and now we've spent a long weekend with the mid-size 5-Series sedan fitted with the fuel-efficient engine. Given... read more March 27, 2014 by 


 
Big square baler harvesting wheat straw for production of cellulosic ethanol

It's Not Just Cars: Diesel Tractors, Construction Equipment Clean Up Emissions Too

Cars and utility vehicles are getting greener, but they're far from the only vehicles out there. To reduce the environmental impact of internal-combustion engines in a... read more March 24, 2014 by 


 
2014 Ram 1500 EcoDiesel

2014 Ram 1500 EcoDiesel Uses 'Maserati' Engine (Trivia Today)

Well, OK, perhaps the 2014 Ram 1500 EcoDiesel doesn't have an engine actually designed by Maserati. But, hey, what other pickup truck can claim to use even the same engine as... read more March 19, 2014 by 


 
2015 Volkswagen Golf, at 2013 New York Auto Show

2015 VW Golf, Beetle, Passat, Jetta All Get New Clean Diesel Engine

Volkswagen's most popular vehicles will all receive a new engine in the second half of the year, in the shape of the company's latest 2-liter turbodiesel unit. The new EA288... read more March 19, 2014 by 


 
Paris, by Flickr user Alexandre Dulaunoy (Used under CC License)

Half Of All Cars Banned From Paris Roads Over Smog; Electric Cars Exempt

Hazardous levels of pollution have caused authorities in Paris to enact its first car ban since 1997. The French capital will ban all vehicles on alternate odd and even... read more March 17, 2014 by 


 
2015 BMW i8

Five Green Cars We Can't Wait To Drive

The green car scene has never had more variety than it does today. You could, if you wanted to, walk into a dealership today and buy regular gasoline and diesel cars, natural... read more March 10, 2014 by 


 
Volkswagen Jetta TDI Cup Street Hitting Dealerships Soon

Replacing 2003 VW Jetta TDI: What Non-Gasoline Car Should He Pick?

Everyone needs car-buying advice once in awhile--even the leader of an electric-car advocacy group. Richard Kelly--the president of Plug-In America--has now put almost... read more March 6, 2014 by 


 
Mazda Hazumi concept

Next Mazda 2: Hazumi Concept Live Photos From Geneva Show

Don't be fooled by the title. It may well read "Mazda Hazumi concept", but Mazda has played this game before. Just as Minagi begat Mazda CX-5 and Takeri begat Mazda6, the... read more March 5, 2014 by 


 
Subaru Viziv 2 concept - 2014 Geneva Motor Show live photos

Subaru Viziv-2 Concept: Geneva Motor Show Live Photos

Last year, Subaru used the Geneva Motor Show to launch the Viziv concept, a diesel-hybrid crossover with a sleek coupe silhouette. This year, the Viziv is back--but Subaru... read more March 4, 2014 by 


 
Walmart WAVE concept truck.

Is Walmart's WAVE Concept Truck The Fuel-Efficient Future Of Semis?

Heavy-duty trucks spend more time on the road than passenger vehicles, so improving their efficiency can have a major effect on emissions--and their owners' bottom lines... read more March 3, 2014 by 


 
Semi trailer

Gasoline-Fueled Diesel Truck Engine Cuts Fuel Use, Emissions

How do you make a diesel engine more efficient? One answer may surprise you: Run it on gasoline. That's what researchers at Sweden's Lund University are doing, and they... read more February 28, 2014 by 


 
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