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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.

FIA introduces 'Hypercar Concept' for World Endurance Championship

One of the most common jabs at hypercars is the question, "Where can you drive them to their potential?" Imagine the answer being: to the checkered flag in the 24 Hours of Le Mans. We're not there yet, but the FIA World Motor Sport Council took a step closer to the possibility during its second annual meeting in Manila, the Philippines. One of three initiatives the WSMC announced for the 2020 World Endurance Championship was "Freedom of design for brands based on a 'Hypercar' concept." This "Hypercar concept" would replace LMP1 as the premier class in the WEC. The dream, of course, would be seeing racing versions of the AMG Project One, Aston Martin Valkyrie AMR Pro, Bugatti Chiron, Koenigsegg Regera, McLaren Senna GTR, Pagani Huara BC, and the rest of the gang trading paint and carbon fiber through Dunlop in a heinously expensive version of "Buy on Sunday, sell on Monday." The reality is that we don't have all the details yet on the set of regulations called "GTP," but the FIA wants race cars more closely tied to road cars, albeit with the performance level of today's LMP1 cars. Exterior design freedom would shelter internals designed to reduce costs, the FIA planning to mandate less complex hybrid systems and allow the purchase of spec systems. One of the FIA's primary goals is lowering LMP1 budgets to a quarter of their present levels. Audi and Porsche budgets exceeded $200 million, while Toyota - the only factory LMP1 entry this year and next - is assumed to have a budget hovering around $100 million. Reports indicated that Aston Martin, Ferrari, Ford, McLaren, and Toyota sat in on the development of the proposed class. If the FIA can get costs down to around $25 million, that would compare running a top IndyCar team and have to be hugely appealing to the assembled carmakers. The initiative represents another cycle of the roughly once-a-decade reboot of sports car racing to counter power or cost concerns. The FIA shut down Group 5 Special Production Sports Car class in 1982 to halt worrying power hikes, and introduced Group C. In 1993, Group C came to an ignoble end over costs; manufacturers were spending $15 million on a season, back when that was real money and not one-fifth of a Ferrari 250 GTO. Then came the BPR Global GT Series that morphed into the FIA GT Championship, which would see the last not-really-a-road car take overall Le Mans victory in 1998, the Porsche 911 GT1. That era would be most aligned with a future hypercar class.

Car Club USA: Louisiana Mudfest

There's nothing quite like mudding. Big tires, huge power, and crazy-wild gearheads that like to throw down on a mud pit almost as much as a thirty rack of Coors. In the latest, and some might argue greatest yet episode of Car Club USA, we head to Louisiana to throw some dirt at Mudfest. As Louisiana's one and only Mouth of the South puts it, "If you don't mud ride... go to Texas I guess." Joining The Mouth and friendly rivals The Most Hated Mud Sluts, we dive in. Beyond the obvious V8 blasting and tractor-tire spinning, those who know best describe Mudfest as, "Good cooking, good friends, good fun, and a lot of partying." It's a motorsport spectacle unlike any you're likely to find up North or out West, though no less impressive to behold. Follow along with the fun, the impromptu drag racing, the trash talking, and the mechanical madness. And find out why, at Mudfest, "if we don't tear it up, we ain't done it right." Each Car Club USA episode features a different car club or event from across the US, where passionate owner communities gather to share automotive experiences and embark on incredible adventures. From Main Street cruises to off-road trails, catch all the latest car club activity on Autoblog. Chevrolet Ford Jeep RAM Truck Off-Road Vehicles Car Club USA Videos autoblog black