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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

GM resumes production of its 3.0-liter turbodiesel straight-six

General Motors temporarily stopped taking orders for trucks and SUVs equipped with the 3.0-liter Duramax turbodiesel six-cylinder engine in August 2021 due to a supplier shortage. Reports claimed the pause would last through 2021, but the engine is already back in production. Enthusiast website GM Authority learned from sources inside General Motors that the straight-six is once again coming off the assembly line at the Flint Engine Plant in Flint, Michigan. There's no official word on precisely what the problem was linked to and whether it was related to the on-going chip shortage that's wreaking havoc across the automotive industry. All we know is that the pause lasted for about two weeks. Called LM2 internally, the six is available in Chevrolet's Tahoe, Suburban, and Silverado 1500 and in GMC's version of these trucks. It's also an option in the Cadillac Escalade. It develops 277 horsepower at 3,750 rpm and a V8-like 460 pound-feet of torque at 1,500 rpm in every application, and it allows these big behemoths to post surprising fuel economy numbers. Fitted to a rear-wheel-drive Tahoe, the Duramax returns 21 mpg in the city, 28 mpg on the highway, and 24 mpg in a combined cycle, figures that make it more efficient than a Blazer. Demand for the diesel-powered trucks is relatively high. While the shortage undoubtedly took a toll on sales, the Duramax represented 8% of Suburban sales and 6% of Tahoe sales in May 2021. There are no other diesel-burning full-size SUVs available new so they have the market to themselves. On the truck side, Ram still makes the EcoDiesel available on some 1500 trims but Ford abandoned the segment. Related Video: Featured Gallery 2021 Chevrolet Tahoe RST View 24 Photos Chevrolet GMC Truck SUV Diesel Vehicles

2023 GMC Canyon revealed with new ZR2-based AT4X trim

Following up on the reveal of its twin, the Chevy Colorado, the 2023 GMC Canyon has made its appearance. Naturally, it shares much with the Chevy pickup, but GMC has gone to greater lengths to differentiate the truck. It comes standard with the high-output engine, all versions feature the wide-track suspension setup, and in addition to the now more luxurious Denali, there's a ZR2-based AT4X trim. As with the new Colorado, the Canyon gets an overhaul of the design. It's down to one bed and cab configuration (short-bed, crew cab), and it features a longer wheelbase with the front axle pushed forward. The Canyon does get a variety of unique design features, though. It has its own front fascia with a tall, rectangular grille. LED lighting is standard on all Canyon models all the way around. That includes the unique fender lights like those found on the Sierra HD. All Canyons also feature the wide-track off-road suspension like the Colorado Z71 and Trail Boss. There are no narrow-track, narrow-body versions, even on the base two-wheel-drive Elevation. That suspension also means all Canyons have a roughly two-inch lift over base Chevy Colorados. The GMCs also get standard 32-inch tires, and they don't feature a front air dam in order to provide better approach angles. The bed, while only available in one trim, is available with a unique storage bin in the tailgate. On the topic of suspension specs, the Elevation and AT4 trim levels have 9.6 inches of ground clearance. The Denali increases that to 10.5 inches, and the AT4X features 10.6 inches. It also picks up the Multimatic spool-valve shocks from the ZR2. But we'll talk more about what comes on the AT4X in a bit. Under the hood of the Canyon is just one engine. It gets the highest-output version of the 2.7-liter turbocharged four-cylinder. The engine makes 310 horsepower and 430 pound-feet of torque. The only transmission is an eight-speed automatic. Two-wheel drive comes standard on Elevation, and other trims come standard with four-wheel drive. The inside of the Canyon is very similar to the Colorado, but it has some unique cues. It has air vents that are more integrated into the squared-off dashboard design, rather than the Chevy's round vents. It has a differently shaped dash pad and trim surrounds, too. The really big differences come on the Denali and AT4X trims, though. The Denali features real wood trim with laser etchings. It also gets lots of real leather and fancy stitching.