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The biggest gas-guzzlers of 2024: 'The Meanest List' is the opposite of greenest cars

In some circles — especially some automotive circles — bigger is better. This explains the Hummer, for example. In its so-called “Meanest List” of a dozen models, the American Council for an Energy-Efficient Economy (ACEEE) makes no apologies for berating “the worst-performing mass market automobiles” sold in 2024 in the U.S. The most diminutive car on the list is a Chevy Corvette Z06. At the top of this particular heap is the Mercedes-Benz AMG G63, a gas-powered SUV that the environmental agency says was “the worst-performing vehicle of the more than 1,200 models assessed by Greener Cars and has an annual fuel cost over $4,000.” Not to mention its MSRP of around $184,000. Rank Make & Model Powertrain Green Score MSRP Estimated Annual Fuel Cost* 1 Mercedes-Benz AMG G63 Gas 20 $184,000 $4,242 2 Ram 1500 TRX 4x4 Gas 22 $98,335 $3,819 3 Ford F150 Raptor R Gas 24 $79,975 $3,777 4 Cadillac Escalade V Gas 26 $152,295 $3,388 5 Dodge Durango SRT Gas 26 $74,995 $3,332 6 Jeep Wrangler 4dr 4X4 Gas 27 $35,895 $3,260 7 Jeep Grand Wagoneer 4x4 Gas 28 $91,945 $3,058 8 Mercedes-Benz G550 Gas 28 $143,000 $3,186 9 GMC Hummer EV SUV EV 29 $98,845 $1,746 10 GMC Sierra Gas 29 $37,700 $3,069 11 Chevrolet Corvette Z06 Gas 30 $114,395 $3,169 12 Mercedes-Benz Maybach S680 Gas 30 $234,300 $3,031 *ACEEE analysis using EIA data of the annual cost of driving 15,000 miles In terms of numbers, the dirty dozen of the meanest includes seven SUVs and three trucks. Lonely at the middle of the list is the sole electric, the GMC Hummer EV, which weighs in at 9,000 pounds. The council notes that “though EVs have lower emissions than similarly sized gasoline models, the Hummer demonstrates that size and efficiency, not just fuel source, are important factors in a carÂ’s environmental impact.” ItÂ’s also worth reminding prospective buyers that the average fuel cost of a vehicle on the “Greenest List” eats up only a fifth of the fuel cost of a vehicle on the Meanest List, “showing that greener options can also be more affordable.” The ACEEE also put out a "Greener List" of efficient gasoline and hybrid cars that don't require plugging in.  By the Numbers Green Cadillac Chevrolet Dodge Ford GMC Hummer Jeep Maybach Mercedes-Benz RAM Emissions Fuel Efficiency Green Automakers Truck SUV Electric Hybrid

Ford finds flex-fuel engine design plays big role in emissions output

How bad is ethanol for your engine? There's been a lot of debate on this issue as the US considers upping the biofuel content in the national gasoline supply from 10 percent (E10) to 15 percent (E15). The ethanol industry and some scientists say higher ethanol blends show no "meaningful differences" in new engines while the oil industry says ethanol creates health risks. Researchers working at the Ford Research and Innovation Center decided to take a closer look at how a wide range of gas-ethanol blends - E0, E10, E20, E30, E40, E55 and E80 - affected the emissions coming out of a flex-fuel 2006 Mercury Grand Marquis. To see the full report, printed in the journal Environmental Science & Technology, requires payment, but there is an abstract and Green Car Congress has some more details. The gist is that, "with increasing ethanol content in the fuel, the tailpipe emissions of ethanol, acetaldehyde, formaldehyde, methane, and ammonia increased." At least NOx and NMHC emissions decreased. The researchers say that the effects are due to the fuel and "are expected for all FFVs," but that the way that a manufacturer calibrates the engine will affect NOx, THC, and NMOG emissions. It's this last bit that's important, since the researchers found, "Higher ethanol content in gasoline affects several fundamental fuel properties that can impact emissions. ... These changes can have positive or negative effects that can depend on engine design, hardware, and control strategy. In addition to direct emissions impacts, higher ethanol content fuel can also provide more efficient combustion and overall engine operation under part-load conditions and under knock-limited higher-load conditions." So, as we head towards more ethanol in our fuel supply (maybe), manufacturers are going to need to learn how to burn it most efficiently.

GM, Ford, Honda winners in 'Car Wars' study as industry growth continues

General Motors' plans to aggressively refresh its product lineup will pay off in the next four years with strong market share and sales, according to an influential report released Tuesday. Ford, Honda, and FCA are all poised to show similar gains as the auto industry is expected to remain healthy through the rest of the decade. The Bank of America Merrill Lynch study, called Car Wars, analyzes automakers' future product plans for the next four model years. By 2020, 88 percent of GM's sales will come from newly launched products, which puts it slightly ahead of Ford's 86-percent estimate. Honda (85 percent) and FCA (84 percent) follow. The industry average is 81 percent. Toyota checks in just below the industry average at 79 percent, with Nissan trailing at 76 percent. Car Wars' premise is: automakers that continually launch new products are in a better position to grow sales and market share, while companies that roll out lightly updated models are vulnerable to shifting consumer tastes. Though Detroit and Honda grade out well in the study, many major automakers are clumped together, which means large market-share swings are less likely in the coming years. Bank of America Merrill Lynch predicts the industry will top out with 20 million sales in 2018 and then taper off, perhaps as much as 30 percent by 2026. Not surprisingly, trucks, sport utility vehicles and crossovers will be the key battlefield in the next few years, Car Wars says. FCA will launch a critical salvo in 2018 with a new Ram 1500, followed by new generations of the Chevy Silverado and GMC Sierra in 2019, and then Ford's F-150 for 2020, according to the study. Bank of America Merrill Lynch analyst John Murphy said the GM trucks could be pulled ahead even earlier to 2018, prompting Ford to respond. "This focus on crossovers and trucks is a great thing for the industry," Murphy said. Cars Wars looks at Korean (76 percent replacement rate) and European companies more vaguely (70 percent), but argues their slower product cadence and lineups with fewer trucks puts them in weaker positions than their competitors through 2020. Related Video: This content is hosted by a third party. To view it, please update your privacy preferences. Manage Settings. Featured Gallery 2016 Chevrolet Silverado View 11 Photos Image Credit: Chevrolet Earnings/Financials Chrysler Fiat Ford GM Honda Nissan Toyota study FCA