Gas Mileage

  • 2019 Chevrolet Silverado 1500, 2018 Detroit auto show

    It looks like GM's investment arm, GM Ventures, has borne some real-world, fuel-saving fruit. Sophisticated engine-control algorithms under the hood of the 2019 Chevrolet Silverado full-size pickup truck, which make the truck's V-8 engines more efficient, came from work done by a company in which GM invested several years ago. In 2012, GM Ventures sank an undisclosed amount of cash into Tula Technology, a Silicon Valley startup that had developed software to provide a more flexible way to deactivate individual cylinders under varying power demands. DON'T MISS: 2019 Chevy Silverado: how a big...

  • Achates 2.7-liter opposed-piston gasoline compression-igntion engine in Ford F-150 test pickup truck
    Achates engine in Ford F-150 pickup targets 37 mpg, with Saudi oil company backing

    One year ago at the Detroit auto show, a company called Achates Power unveiled models of a new kind of internal-combustion engine. With opposed pistons in the middle and crankshafts at either end, it was sufficiently different to startle most visitors who paid attention. That engine came with some...

  • 2016 Mazda 3
    Mazda tops EPA fuel-efficiency rankings for fifth year in a row

    Pick-ups and SUVs are rapidly taking over the American automotive landscape, but there's at least one measure in which it benefits an automaker to sell fewer of those vehicles. In the Environmental Protection Agency's latest "Light-Duty Automotive Technology, Carbon Dioxide Emissions, and Fuel...

  • 2019 Ram 1500, 2018 Detroit auto show
    2019 Ram 1500 pickup has 48-volt 'mild hybrid' system for fuel economy

    The dominant news at the 2018 North American International Auto Show in Detroit was about pickup trucks. Ironically, the Detroit automaker with the fewest electrified models on sale was the only one to bring hybridization to a new truck, in the form of its brand-new 2019 Ram 1500. Fiat Chrysler...

  • 2017 Chevrolet Bolt EV
    Best deals on hybrid, electric, fuel-efficient cars for January 2018

    Is one of your New Year's resolutions to go green? We're here to help with this month's deals on electric, plug-in hybrid, hybrid, and other efficient vehicles. Against last month, the cars offering the best incentives haven't changed—but the incentives themselves have. Click ahead to find...

  • Sales-weighted fuel economy, 2008-2017, United States, from UMTRI
    Sales-weighted new-car fuel economy stuck at 25 mpg, for fourth year in a row

    Even as vehicles become more fuel-efficient, the unending market shift toward crossover utilities, SUVs, and trucks kept the overall average U.S. new fleet efficiency stagnant for the fourth year in a row. For 2017, sales-weighted new-car fuel economy landed at 25.2 mpg, an improvement over 2016 of...

  • Gas + Electricity sign: how long until we see this for highway rest stops?   [mockup: John Briggs]

    As Americans collectively sigh at their credit-card bills from the holiday season, GasBuddy has some bad news that won't help ease the financial pain. The fuel price-tracking website predicts the cost of a gallon of fuel will rise by $0.19 per gallon in 2018, on average, to the highest level gas prices have been since 2014. That might not seem like much, but it represents an extra $133 per year in fuel costs for the average American household. DON'T MISS: Gas has to cost $3 a gallon before it affects vehicle choice, study says According to an annual report published by GasBuddy, when you...

  • On-Road Fuel Economy of Vehicles in the United States: 1923-2015 (Sivak and Schoettle)
    Automaker push to delay, modify, or kill CAFE is nothing new

    As automakers yet again lobby Washington to roll back planned fuel-economy targets for 2025, they've employed some familiar tactics to drive the point home to lawmakers. It cannot be done. It will cost too much. It will destroy the industry and kill jobs. Consumers do not want this. The science is...

  • 2016 BYD Tang plug-in hybrid SUV, made in China
    China is serious on fuel economy: 500-plus models to go out of production

    China has taken a major step toward cleaning up the new cars sold in the country beginning January 1. As numerous countries debate plans to end sales of fossil-fuel vehicles completely at points in the future, China has now forced the end of production for some 553 models, starting Monday. The...

  • Infiniti QX50 concept, 2017 Detroit auto show
    2019 Infiniti QX50 crossover to debut variable-compression engine

    Efforts by automakers to increase fuel efficiency and reduce carbon emissions have intensified in recent years as emission rules have tightened and the effects of climate change are better analyzed. While electric cars and hybrids will grow in popularity, the internal-combustion engine remains the...

  • 2018 Jeep Wrangler
    New 2018 Jeep Wrangler boosts fuel economy, from bad to less bad

    Ahead of the next-generation 2018 Jeep Wrangler's debut, the EPA released fuel-economy estimates for the V-6 powered model of the archetypal SUV. They're higher, as are the ratings for pretty much every new model, courtesy of steadily rising corporate average fuel-economy rules for model years 2012...

  • Will you use less fuel during engine braking or simply by coasting?
    Saving gas by lifting the pedal: engine braking vs coasting (video)

    The way a driver operates a car can produce very different fuel-economy numbers, and when driving downhill, two notable techniques come into play. The first is leaving the car in gear and using so-called engine braking to provide at least some deceleration. But many believe putting a car in neutral...

  • 2018 Toyota Camry Hybrid

    Toyota can’t be blamed for a lack of effort: The 2018 Toyota Camry Hybrid is dripping with it. From the creased hood and cascading brow to the Modernist center console enclosed by flickers of chrome, the mid-size stalwart is anything but lazy. Our first, limited exposure to the hybrid sedan left us impressed, but with unanswered questions. Namely, how the nickel-metal hydride battery setup in the XLE Hybrid would fare in providing real-world fuel economy. Also, what kind of Camry Hybrid can customers expect to find on dealers’ lots? After all, the early pre-production prototypes...

  • 2017 Ford F-150 Raptor
    What will happen to U.S. fuel-economy rules through 2025? Poll results

    With the election of Donald Trump as U.S. president last November, it became clear that the regulatory environment for businesses would change once he took office. Indeed, dozens of regulations limiting corporate activities involving emissions, fossil-fuel exploration, hiring and firing, and a host...

  • U.S. Capitol Building
    States to force emission, fuel-economy rules showdown with Trump Administration?

    Continuing political turmoil and news coverage of the Trump Administration haven't stopped the president's agency heads from drastically reshaping policies on energy, the environment, and emissions. Comments are now being taken on the reopened EPA limits on vehicular carbon emissions for 2022...

  • 2018 Toyota Prius C
    Complex engine tech gets better ratings, does little in real world: report

    Lately, automakers haven't been touting the rising fuel economy of new vehicles, but it has to continue rising to meet reductions in the legal levels of carbon emitted. While major strides in fuel economy have been made over the past five years, the complex engine technologies and other...

  • Gas pump
    What will happen to US fuel-economy rules to 2025? Take our Twitter poll

    Even the automaker lobbying group didn't go this far in their complaints about emission and fuel-economy rules for vehicles in the 2022 through 2025 model years. When the Obama Administration approved final EPA emission rules for those years, the automakers complained that the comment period had...

  • 2020 Mazda 3 prototype
    Mazda's SkyActiv-X: diesel fuel economy from gasoline engine

    The internal combustion engine, now more than 200 years old, will be with us for a long time to come yet. Powering more than 1 billion vehicles on the planet and almost 100 million new ones each year, it is the default way to move vehicles along the world's roads. With its carbon emissions now...

  • Honda Civic 1.6 i-DTEC diesel (European version)

    Fuel-economy ratings for cars sold in Europe have long been wildly unrealistic, sometimes more than 30 percent more optimistic than real-world consumption figures. Today, that will change. As of September 1, two new and more stringent testing regimes are to be used for certifying new vehicles going on sale in European Union countries. DON'T MISS: EU fuel-economy ratings move further from reality; Mercedes tops offender list The test cycles in use until now, known as the New European Driving Cycle or NEDC, have been widely criticized as too gentle and unrepresentative of actual usage patterns...

  • 2017 Ram 1500 Rebel Blue Streak
    Trump NHTSA might reduce fuel-economy rules for two-thirds of U.S. vehicles

    Consumers all over the world, but especially in North America, are buying more crossover utility vehicles and fewer passenger sedans and hatchbacks. The U.S. auto industry makes the bulk of its profits on light trucks, which include crossovers, pickup trucks, and even minivans. The Trump...

  • Gas pump
    Carmaker lobbyist urges fuel-economy deal to keep emission limits, but stretch them out (updated)

    Automakers appear to have united behind a surprising position: reviews of emission rules should not involve scrapping the current standards. The Alliance of Automobile Manufacturers, a lobbying group that represents automakers building cars in the U.S., has suggested the Trump administration should...

  • 2017 Ford F-150 Raptor
    For pickup trucks, more than half all fuel savings come in 2022-2025 CAFE rules

    Sometimes, when science and technology issues have economic or political consequences, incorrect or misleading information and analyses can be propagated through the media, leading both decision makers and the public astray. A piece published in April by Forbes, covering the effects of the 2022...

  • 2017 Mazda MAZDA3
    2019 Mazda 3 to feature world-first HCCI engine for efficiency: report

    It's a technology that's been a sort of Holy Grail in the auto industry for at least a couple of decades. Now Mazda, one of the smallest global automakers, plans to introduce it in a radical new engine to be used in a future Mazda vehicle in 2019. It's called homogeneous charge compression...

  • Gas pump
    NHTSA to review gas-mileage rules: could freeze 2021 limits, even roll back (updated)

    The U.S. Department of Transportation said yesterday the NHTSA is preparing to revise corporate average fuel economy requirements for model years 2022 through 2025. The proposed version of those regulations, which was issued by the Obama Administration in 2012, included steady increases for each of...

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