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500+ hp Stellantis 'Hurricane' I6 previews a world without Hemis

After years of rumored development, Stellantis has revealed its new six-cylinder engine family. The 3.0-liter, twin-turbocharged "Hurricane" I6 will offer V8 power, forced induction torque and six-cylinder efficiency in a package designed to fit into any of the company's North American rear-wheel-drive platforms.  What is "V8 power," exactly? Well, in standard output guise, the new I6 cranks out more than 400 horsepower (the specific figure will vary by application) and 450 pound-feet of torque, while the high-output variant is good for more than 500 horses and 475 lb-ft. The final figures will be dependent on the application. We'll save you a little legwork: In current Ram, Jeep and Dodge products, the 5.7-liter Hemi tops out at about 395 hp and 410 lb-ft, give or take, and the 6.4-liter around 485 hp and 475 lb-ft.    This is a clean-sheet design that is only related to the company's turbocharged four-cylinder by some common measurements. The I6 is exclusively direct-injection (no hybrid/port-injection here) and the two I6 variants share 96 common parts, including the block and oil pan design. The differences are found in their internals, intake plumbing, valvetrain components and the turbochargers themselves. Stellantis is not yet ready to share specs or supplier info for the turbos but says announcements will come from its partners soon.  The standard-output I6 has a compression ratio of 10.4:1 and revs to 5,800 rpm. It will run on regular fuel, albeit with reduced performance; 91 octane is recommended for maximum output. The high-output variant has a compression ratio of 9.4:1 and will rev to 6,100 rpm. That one will require premium. The new I6's advantages go beyond basic power output. Every Hemi family engine currently in production is based on an iron block design, so they're heavy. The aluminum-block I6 shaves weight off the total engine package, even if some of that gets added back thanks to the turbos and their associated plumbing. The standard-output I6 weighs 430 pounds, Stellantis engineers told us; the high-output adds just another 11. Fully dressed 5.7-liter V8s are in the 550-560-pound ballpark, and 6.4-liters close in on 600 pounds.  You may be wondering, "Why a clean-sheet gasoline engine now, when the industry is moving toward battery-electrics?" A valid inquiry, and one Stellantis was prepared to address. While the company will be pivoting to electrification over the next decade, it won't be instantaneous.

Stellantis, GM pay $363 million in U.S. fuel economy penalties

WASHINGTON — Stellantis and General Motors paid a total of $363 million in civil penalties for failing to meet U.S. fuel economy requirements for prior model years, documents seen on Friday by Reuters show. The record-setting penalties include $235.5 million for Stellantis for the 2018 and 2019 model years and $128.2 million for GM covering 2016 and 2017, according to the National Highway Traffic Safety Administration (NHTSA), which administers the Corporate Average Fuel Economy (CAFE) program. Stellantis — which also owns Fiat, Peugeot and other marques — said the penalty "reflects past performance recorded before the formation of Stellantis, and is not indicative of the companyÂ’s direction." Stellantis previously paid a total of $156.6 million in penalties for the 2016 and 2017 model years. GM said Friday as "we work towards the goal of a zero-emissions future, we may use a combination of credits from prior model years, expected credits from future model years, credits obtained from other manufacturers, and payment of civil penalties to comply with increasingly stringent CAFE regulations." GM, which sells Chevrolet, Buick, GMC and Cadillac vehicles in the U.S., had not previously paid a fine in the 40-year history of the CAFE program. It had initially planned to use credits to meet its compliance shortfall but opted to pay penalties, NHTSA said. The GM and Stellantis penalties were paid between December and May, according to the records. This is the first time in three years the agency has collected fuel economy penalties. NHTSA in April 2022 said it calculated there would be 11 instances between 2018 and 2021 "where substantial civil penalty payments will have to be made," but did not disclose the automakers involved. The disclosure comes ahead of NHTSA's plan to soon propose more stringent fuel economy standards for 2027 and beyond, after the Environmental Protection Agency in April proposed a 56% reduction in projected fleet average emissions over 2026 requirements by 2032. Sharp increase The EPA said in December Stellantis had the lowest real-world fuel economy among all major automakers, at 21.3 miles per gallon on average in 2021, while GM was second-lowest at 21.6 mpg. In March 2022, NHTSA reinstated a sharp increase in penalties for automakers whose vehicles do not meet fuel efficiency requirements for 2019 and beyond.

STLA Medium EV platform claims long range, up to 382 horsepower

We don’t get to see it paired with a car yet, but Stellantis just revealed a bunch of details about its upcoming STLA Medium electric vehicle platform. As a reminder, this is just one of four that will ultimately come out, including STLA Small, Medium, Large and Frame. The "Medium" is specifically designated for vehicles in the C and D segments, but Stellantis isnÂ’t explicitly saying which new models will sit on it. At the very least, Stellantis is providing a boatload of specs to chew on. Maximum range for vehicles on the STLA Medium platform is said to be 435 miles when paired with a "Performance" pack and tested on the WLTP cycle. The "Standard" pack brings that max range down to 310 miles. Of course, expect those numbers to nosedive when tested on the EPA cycle. All those miles come courtesy of a 98-kilowatt-hour battery pack, which is the highest-range Performance pack. Stellantis hasnÂ’t said what the standard pack capacity will be quite yet. As for charging, all STLA Medium vehicles will feature a 400-volt electric architecture that will be able to facilitate charging from 20-80% in 27 minutes. A maximum charge speed is not yet specified. Stellantis also claims an astoundingly efficient 4.43 miles per kWh, "depending on the application." Basically, donÂ’t expect all of the STLA Medium vehicles to touch that level of efficiency, but some might for WLTP testing. As for driving enjoyment, you can expect power output to range between 215-382 horsepower. STLA Medium cars will be available with either front-wheel drive or all-wheel drive and come in body styles including "passenger cars, crossovers and SUVs." The platform allows for some flexibility in size, so wheelbase can range from 106-114 inches. Overall length will vary from 169-193 inches, and ground clearance maxes out at 8.66 inches, for those curious about how Jeep models might fare on this platform. Stellantis says itÂ’s going to deliver "best-in-class battery packaging cost," explaining that despite various total energy options, the perimeter dimensions of the battery pack, common tray and cooling designs will remain constant.