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Did a US automaker blow the whistle on Hyundai, Kia fuel economy issue?

In all of the most hotly contested mainstream segments of the motoring universe, the difference of one mile per gallon averaged on a widow sticker can mean the difference between a sale and a walk-off - to say nothing of two or three mpg. So, when Hyundai and Kia were forced to reveal that many of their 40-mpg ratings were actually 38s and 37s, well, it made for big news.
It also, conceivably, made for a competitive disadvantage immediately, when the Korean automakers' products were being shopped versus the guys down the block. And it's that disadvantage that makes a recent story from Automotive News so juicy.
AN is reporting that Margo Oge, former head of the Environmental Protection Agency's Office of Transportation and Air Quality, got a tip in 2010 that Hyundai/Kia were "cheating" to get its impressive fuel economy numbers. The tip, said Oge (who retired from the EPA this past September), came from a senior vice president from a domestic automaker. The source was credible enough for Oge to launch an audit of the Hyundai figures, which ultimately lead to the debacle that we reported on a few months ago, and that the Korean company has been trying to bounce back from ever since.

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.

GM says it favors fuel-efficiency rules based on historic rates

WASHINGTON — General Motors backs an annual increase in fuel-efficiency standards based on "historic rates" rather than tough Obama era rules or a Trump administration proposal that would freeze requirements, according to a federal filing made public on Monday. The largest U.S. automaker said the Obama rules that aimed to hike fleet fuel efficiency to more than 50 miles per gallon by 2025 are "not technologically feasible or economically practicable." The Detroit automaker said that since 1980, the motor vehicle fleet has improved fuel efficiency at an average rate of 1 percent a year. Fiat Chrysler Automobiles NV said in separate comments that the auto industry is complying with existing fuel efficiency requirements by using credits from prior model years. As a result, even if requirements are frozen at 2020 levels, "the industry would need to continue to improve fuel economy" as credits expire, it added, warning if the government hikes standards beyond 2020 requirements "the situation worsens ... without some significant form of offset or flexibility." Fiat Chrysler and Ford urged the government to reclassify two-wheel drive SUVs as light trucks, which face less stringent requirements than cars. A four-wheel drive version of the same SUV is considered a light truck. Ford backs fuel rules "that increase year-over-year with additional flexibility to help us provide more affordable options for our customers." GM's comments said it was "troubled" that President Donald Trump's administration wants to phase out incentives for electric vehicles. The Trump plan's preferred alternative freezes standards at 2020 levels through 2026 and hikes U.S. oil consumption by about 500,000 barrels per day in the 2030s but reduces automakers' collective regulatory costs by more than $300 billion. It would bar California from requiring automakers to sell a rising number of electric vehicles or setting state emissions rules. The administration of former President Obama had adopted rules, effective in 2021, calling for an annual increase of 4.4 percent in fuel-efficiency requirements from 2022 through 2025. GM has been lobbying Congress to lift the existing cap on electric vehicles eligible for a $7,500 tax credit. The credit phases out over a 12-month period after an individual automaker hits 200,000 electric vehicles sold, and GM is close to that point.