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Hennessey Mammoth 1000 6x6 TRX is prehistoric excess

A few things have changed on the way to the Hennessey Mammoth 1000 6x6 TRX, the six-wheeled pickup based on the 2021 Ram 1500 TRX announced in September 2020. Back then, it was going to be powered by the 7.0-liter Hellephant engine, tuned from a stock 1,000 horsepower to 1,200 hp, it would cost $500,000 before customization, and the Texas tuner said there'd only be three built — likely owing to the exceeding scarcity of that crate motor. The good news for folks who thought they'd be left in the cold is that a slightly different but still astonishingly massive Mammoth is going into serial production, and at a lower price. Instead of the Hellephant, a 6.2-liter Hellcat lives under the chest-height hood. In the Ram 1500 TRX the engine makes 702 hp and 650 lb-ft., but a 2.65-liter supercharger is the heart of a Lone Star State overhaul boosting output to 1,012 hp and 969 lb-ft. The rest sticks to the original formula. The lengthened frame stretches overall length to 283 inches, a skosh more than four feet longer than the donor truck — long enough to hold plywood and a picnic in the bed. A Bilstein suspension hangs all that sheetmetal seven feet high over 20-inch wheels wearing 37-inch Toyo Open Country rubber. If for some reason the six-toed contact patch doesn't get a driver out of trouble, the third axle can be locked up. In case of greater calamity, the stinger front bumper is ready to accept a winch, and the rear bumper sprouts a couple of attachment points. There are also footholds in that rear bumper to make rummaging in the bed easier, but those footholds are so high up they could use the same retractable steps alongside the cabin to reach. Naturally, the interior has been reworked, and there are a "dazzling array of LED lights." Hennessey says it will make 12 of these — the largest truck in the company's 30-year history — every year. The Mammoth 6x6 can be ordered directly from Texas or at any authorized Ram retailer for $449,950. We can't wait to see what happens when this meets the GMC Hummer EV pickup on the trail. If you like the idea of the Mammoth but this Mammoth is a tad too mammoth, consider the rest of Hennessey's family of Elephantidae, the four-wheeled Mammoth 900 and Mammoth 1000, or the Mammoth SUV.   Related video: This content is hosted by a third party. To view it, please update your privacy preferences. Manage Settings.

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

FCA recalls 2019-20 Ram 2500 and 3500 trucks for transmission fluid leak

Once transmission fluid goes into the transmission, there's a general expectation that it will stay inside. On some 2019-2020 Ram 2500 and 3500 trucks, that ain't happenin'. Fiat Chrysler Automobiles (FCA) and the National Highway Traffic Safety Administration (NHTSA) opened a recall campaign on January 24,  due to transmission fluid leaking from the dipstick tube on vehicles with a six-speed automatic (codenamed 68RFE) transmission.  NHTSA recall No. 20V043000 states that 84,978 trucks are potentially affected. On select Ram work trucks, "a buildup of pressure and heat inside the transmission may result in a transmission fluid leak." Due to the location of where the leak might occur, the transmission fluid could drip onto the nearby turbocharger or "another ignition source within the engine compartment." Should this occur, it's a fire risk. The recall breaks down to 64,590 units of the 2500 pickup and 19,612 of the 3500. FCA estimates that only 1% of the roughly 85,000 vehicles have the defect.  As a fix, Chrylser will replace the transmission valve body separator plate and reprogram the powertrain control module. Chrysler will officially begin the recall process on March 14, and all owners will be notified. Related Video: