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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

Dodge Challenger ACR rumored finally on its way using Viper ACR as benchmark

In 1995, Dodge released the ACR Neon, an unlikely combination of cheap, compact American sedan and high-performance parts and engineering marked by initials standing for American Club Racer. Dodge sold a heap of them, so the automaker flexed the ACR brand's potential with the first ACR Viper in 1999. The racy coupes made huge noise for Dodge and the Viper. After the fourth-gen Viper ended production in 2010, Dodge took a Challenger ACR concept to SEMA in 2011. But instead of carrying the coupe to production, Dodge resurrected the Viper for 2013 and got one more Viper ACR model out during the last Viper's final years. With the Viper gone again, it appears Dodge is sorting out that Challenger ACR concept for real. Last October, Mopar Insiders reported the automaker was trying to get a Challenger ACR prepared for the model's 50th anniversary this year. The timing looks highly unlikely, but an Allpar source says the track-happy coupe is still coming, and with bonkers expectations and gear. We're talking about a big-boi widebody Challenger tuned to do hard laps, fast, around twisty circuits, all day long. An Allpar insider known as "Muther," a code name to tug at John le Carre's heart, said Dodge is considering two engines. Because the point of the car is to be raced and some series don't accept forced induction, one trim would fit the naturally aspirated 392 Hemi from the R/T Scat Pack. There's no telling if that motor would get a power bump, but the Challenger ACR concept upped its output slightly with measures like a cat-back exhaust. The other trim, naturally, would fit the 6.2-liter Hellcat Redeye V8.     Muther told Allpar that if engineers can get the car under 4,000 pounds, the math points to being within two seconds of the time set by the Viper ACR-E at Road America. That "E" represents the Extreme Aero Package, with addenda like a deeper front splitter, dive planes, and an adjustable, dual-element rear wing that helped the Viper ring up 14 lap records on U.S. tracks. The fastest time we know of for a Viper at Road America is from 2011, factory race driver Kuno Wittmer doing 2:20 even in a Gen IV Viper ACR. Wittmer's ride weighed 3,408-pounds. Dodge boffins want to get the Challenger ACR under 4,000 pounds. Achieving the weight goal would mean cutting at least 387 pounds from a standard R/T Scat Pack Widebody, and 512 pounds from the Hellcat Redeye Widebody if that trim has the same target.

Dodge puts kibosh on Challenger ACR rumors

In 2011, after the end of the Gen IV Dodge Viper and its ACR trim, Dodge took a Challenger ACR concept to the SEMA show. In October of last year, trusted FCA-focused outlet Mopar Insiders heard from its sources that something of the kind could finally be in the works, word being the automaker "is quietly working on a surprise to help celebrate the 50th anniversary of the Challenger nameplate." Last week, trusted FCA-focused outlet Allpar got more details from its own source, "Muther," on the specs and aspirations for a Challenger supposedly meant as a last big hurrah before the next generation appears in 2023. Now, we find out the Challenger ACR is a ghost, Autoweek reporting, "According to a spokesperson from Dodge, it's not happening." That brief denial is all the automaker had to say about it. Assuming Dodge isn't hiding anything, we're more surprised at detailed erroneous intel being shared with both MI and Allpar than we are about the track-day seducement Challenger ACR being bogus. A tale about Dodge engineering a Viper-like makeover for its number one muscle car so as to shame the 2020 Ford Mustang Shelby GT500 and Camaro ZL1 around a track would have been compelling enough. But word that Dodge wanted the Challenger ACR to breathe down the dearly departed neck of the Viper ACR around Road America, well, that was a crate of Hemi-powered wild. The implied impertinence of such a target is worrisome enough, and the weight loss goal would have added an extreme dimension to the ACR brand. The Neon ACR and Viper ACR didn't give up more than 100 pounds compared to their standard counterparts. The insiders spoke of the Challenger getting under 4,000 pounds, in part thanks to an optional passenger's seat. The diet would have required losing 400 pounds in a best-case scenario, which would still leave the big coupe 500-plus pounds heavier than a Viper ACR. Back to that impertinence... We'll likely never know what really happened with the Challenger ACR, so we'll stick it in the X-Files drawer between Big Blue and Chinga. Related Video: This content is hosted by a third party. To view it, please update your privacy preferences. Manage Settings.