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GM's MPG overstatement could affect 2 million vehicles

Late last week, GM admitted that three of its large SUVs fuel economy window stickers did not match their actual efficiency ratings, and so the vehicles couldn't be sold. The stickers on the 2016 Chevy Traverse, GMC Acadia, and Buick Enclave said their ratings were one to two miles per gallon better than they should have been. Officially, the number of affected vehicles sits at about 60,000. But Consumer Reports makes a good point: what's up with all of the previous model year SUVs that are basically the same vehicle? To wit: the 2016 model year vehicles are not substantially different than the 2015 or the 2014, or even going all the way back to 2007. On the EPA's fuel economy website, all of these older models will "have better stated fuel economy numbers than the new vehicles in GM's dealerships," Consumer Reports noted. CR's best point, and the one that makes the 60,000 number potentially grow to 2 million if all of the vehicles built on this platform are affected, is that "[i]t seems unlikely that the company would change the powertrain on these carryover models so late in their model cycles in a way that would cause a dramatic, negative impact on fuel economy." GM says that earlier model year SUVs are not affected and the EPA did not respond to CR's question about the potential for more discrepancies. We've seen automakers reverse course before, so if GM has to come out with a mea culpa soon, don't be surprised. GM is rushing corrected stickers to dealers so that the SUVs can be sold again, but a fix for the already-sold vehicles could be trickier to solve. Related Video: Related Gallery 2013 GMC Acadia View 16 Photos News Source: Consumer Reports Government/Legal Green Buick Chevrolet GMC Fuel Efficiency mpg gmc acadia chevy traverse

This is how GM is hiding new Chevy Volt in public

General Motors is letting the public know that, well, it's not about to let the public know anything else about the next-generation Chevrolet Volt. But the automaker is willing to talk about its camouflaging process for upcoming versions of the extended-range plug-in. So it's a half-hearted secret, at best. GM actually has a "camouflage engineer" charged with creating ways to disguise the styling of new vehicles. In the Volt's case, the company is applying black and white swirly color patterns on top of the materials, such as plastics, vinyl and foam, that are used liberally across the body. It's all part of a teaser campaign that started last month with pictures of part the 2016 Volt. Earlier this month, GM said it was keeping track of Volt drivers' habits as it works on the next-gen model. The company noted that more than four out of five trips are being made in all-electric driving mode, and that 60 percent of Volt owners use a plain-old 100-volt outlet to recharge their cars. The car is slated to make its global debut at Detroit's North American International Auto Show next January, and the early word is that performance and all-electric range will be improved (we should hope so). The car will also be sleeker. By how much, we can't tell yet, because of those darn swirly patterns. GM's got more non-details in its press release below. Engineers charged with hiding styling while vehicle testing proceeds in public DETROIT – The styling of the next-generation Chevrolet Volt is one of the automotive world's best-kept secrets. Keeping customers and media eager to see the successor to the groundbreaking original at bay until the new Volt debuts at the North American International Auto Show in Detroit in January is tricky business. First, it is engineers, not designers, who are charged with creating camouflage that balances styling secrecy with the need to validate the Volt and its systems in public. "If it were up to me it would be a shoebox driving down the road," said Lionel Perkins, GM camouflage engineer. "The design team wants us to cover more of the vehicle and the engineering team needs to have enough of the vehicle's weight and aero exposed so that the tests in the development process are consistent with the product that will come to market." The engineers responsible for the "cool" designs covering the car might deserve style points but their efforts are intended strictly to hide the metal beneath.

Next-gen Chevy Volt gets Corvette looks, adjustable regen levels

The hood may say "full speed ahead." The regenerative braking system says "slow down a bit." One person's automotive improvements is another's identity crisis, all in a day's work analyzing the new Chevrolet Volt. The next-generation version of General Motors' first extended-range plug in will include design touches taken from to the new Chevrolet Corvette, GM's iconic sports car. Hexagonal taillights and a "taut" hood will be part of the new package, Automotive News says, citing General Motors design chief Ed Wilbur. But does that mean the Volt is shedding any of its green-car cred? Not at all, if one considers that the Volt will also let the driver adjust the degree of regenerative braking using steering-wheel paddles to dial up and recapture as much energy as possible and engage in "one-pedal" driving or turn it down for easier coasting. Check out the 55-second video below featuring GM executives Mark Reuss and Andrew Farah trying out the Volt's new regenerative-braking system that was first used on the Cadillac ELR. GM will have more details for us when it unveils the 2016 Chevy Volt at the North American Auto Show in Detroit next month. The new version is said to have a larger battery, a longer all-electric driving range and more power, but Chevy's been fairly mum on those sorts of performance details so far. Green Chevrolet Electric volt cadillac elr corvette regenerative braking