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Chevy says not to look at the 2019 Silverado's fuel economy rating

The 2019 Chevy Silverado is hitting dealerships soon, and one of the most notable changes for the new full-size pickup is the addition of a 2.7-liter turbocharged inline-four. The engine replaces the naturally-aspirated 4.3-liter V6 in volume consumer models like the Silverado LT and promises more power, less weight and — most importantly — better fuel economy. The thing is, the gains in efficiency haven't been as dramatic as some might have hoped, especially when stacked up against competitors from Ford and Ram. As Automotive News reports, GM's response is a little murky. First, let's talk numbers. We're pulling all figures from FuelEconomy.gov, the official U.S. government source for fuel ratings. Fuel economy numbers on trucks vary greatly based on a number of factors. Bed and cab configuration play a part, but so does a four-wheel-drive system. You also have to factor in tires, transmissions, rear-axle gearing, hybrid systems and cylinder deactivation. Things like that can make the difference between best- and worst-in-class. The EPA's website doesn't give enough information a lot of the time, so there's really no easy way to compare apples-to-apples. First, take a look at the ratings for the 2019 Silverado. A 2.7-liter model with two-wheel drive is rated 20 city, 23 highway and 21 combined. That's both better and worse than a two-wheel drive 2018 Silverado with the 4.3-liter V6 (18 city, 24 highway and 20 combined). The updated 2019 Silverado with a 4.3-liter V6 has yet to be rated. With less weight and a smaller engine, many hoped Chevy would make bigger gains. It's unusual to see any decrease in a fuel economy metric these days. GM says that it's not done tuning the new 2.7-liter engine, so fuel economy could theoretically increase. Expanding further, a V8-powered 2019 Silverado (17 city, 24 highway and 19 combined) actually gets better highway fuel economy than a turbocharged four-cylinder powered truck in certain configurations, even if the latter has a better overall average. But that's only with two-wheel drive, the 8-speed transmission and cylinder deactivation. A Silverado with the 5.3-liter V8 and a 6-speed automatic is rated at 15 city, 22 highway and 17 combined. The biggest issue with the Silverado 2.7-liter doesn't come from within GM itself but from Ford and Ram. GM cites the Ford F-150 with the 3.3-liter V6 and the Ram 1500 with the 3.6-liter V6 as the closest competitors to its new 2.7-liter inline-four.

Ram 1500 Rebel OTG concept shows up in a patent filing

Stellantis filed a patent with the U.S. Patent and Trademark Office on April 12, initially found by Car and Driver, in the generic category "Automobile Body." But the images within portray a specific vehicle: The 2020 Ram Rebel 1500 Off the Grid (OTG) concept from the 2019 SEMA show. That concept dipped a regular old Ram in a vat of Mopar and third-party accessories, the result a rig built for bugging out. Off-the-shelf and custom Mopar gear included a larger grille with flow-through RAM lettering, a steel front bumper with integrated off-road lights, a high-rise snorkel, side steps doubling as rock rails, a two-inch lift kit, and fender flares over beadlock wheels wrapped in 35-inch Goodyear meat. The Ram Power Wagon donated its 10,000-pound Warn winch, the Ram Tradesman donated its rear bumper for a better departure angle and vinyl interior flooring. This could be considered the base form of the truck, and it's what the patent drawings illustrate — a rig Stellantis could put on a dealer floor in 48 hours. The third-party accessories are missing. On the concept, those were a Yakima rooftop basket and utility rack with more LED lighting, a rooftop tent, awning, and solar array, and a bed-mounted slide-out cooking area and cooler from Dometic. With factory-built hardcore off-roaders even more popular than they were in 2019, the question is whether Ram plans to throw a Rebel-based hat in the ring. Muscle Cars & Trucks wonders if Ram is considering dividing its performance truck lineup into a big-bore go-fast TRX side challenging pickups like the Ford F-150 Raptor and a hardcore expedition side taking on pickups like the Chevrolet Silverado ZR2. The concept Rebel OTG was powered by the 3.0-liter V6 EcoDiesel with 260 horsepower and 480 pound-feet of torque, which would be another big differentiator on a showroom floor. Or, as C/D muses, this could be a template for a Mopar special edition, something Ram can test the waters with before committing. Or, as with so many other patents, it could be nothing. If nothing else, it's nice to see Ram still thinking about it. Related video: This content is hosted by a third party. To view it, please update your privacy preferences. Manage Settings.

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.