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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

Chevy Volt 'acceptable,' Nissan Leaf 'poor' in new IIHS safety tests

Ford C-Max Hybrid also scored "acceptable" rating. With US Nissan Leaf sales up almost 30 percent during the first half of the year, the only thing that might be able to stop the battery-electric vehicle is a good, stiff barrier. Unfortunately, thing's aren't always pretty when that happens in the real world, according to new tests from the Insurance Institute for Highway Safety (IIHS). Things with the Chevrolet Volt extended-range plug-in are a little bit rosier, though. The two plug-in vehicles were part of a batch of a dozen vehicles that just went through the IIHS's "small overlap" test, in which the driver's side front corner of the vehicle is crashed into a rigid barrier at 40 miles per hour. Out of the dozen, only the Mini Cooper Countryman was given a "good" rating. Five vehicles, including the Volt and the Ford C-Max Hybrid, were rated "acceptable," two were "marginal" and two, including the Leaf, were "poor." Plug-in vehicles are unique in the crash-test context because of their relatively large battery sizes. In the Volt's case, the driver had a "low risk" of injury, said the IIHS. But the Leaf's crash substantially pushed back the instrument panel and steering column, creating a scenario where the driver was "likely" to sustain leg injuries. The batteries in both the Leaf and the Volt passed safety tests specifically targeted at things like thermo and electrical properties and overall integrity. "Nissan is proud of the Leaf's 'Good' rating in all other IIHS tests, a 4-star NCAP rating from NHTSA and its IIHS Top Safety Pick rating in all previous years since the car's release," the company said in an e-mail sent to AutoblogGreen. "As for the performance of the 2014 Leaf in the 'small overlap frontal test,' Nissan will continue to review these and other results from the IIHS 'small overlap frontal test' as we seek opportunities for improvement." Check out the IIHS's press release and small car crash-test video footage below. Range of ratings: Small car ratings run the gamut in challenging small overlap front test The Mini Cooper Countryman is the only small car to earn a good rating among the latest group of 12 cars subjected to the Institute's small overlap front crash test. Two electric models and a hybrid also are in the mix, with varied results. The electric-powered Chevrolet Volt (with a gasoline engine "range extender") earns an acceptable rating, while its battery-electric rival, the Nissan Leaf, earns a poor rating.

Cadillac could base its entry-level sedan on the Chevy Cruze [UPDATE]

UPDATE: Cadillac spokesperson Donny Nordlicht tells Autoblog , "The post speculating on a future Cadillac model derived from the Chevrolet Cruze is completely false." Premium automakers Mercedes-Benz and Audi have seen plenty of success with new small front-drive-based sedans. The CLA-Class had its best January ever this year, while Audi moved more of its new A3 in 2015 than its predecessor sold in 2005 through 2010 combined. The fact that Cadillac wants a piece of that pie is no surprise, then. There's a new rumor that GM's luxury brand could launch its own compact – possibly called CT2 – to battle the Germans. Cadillac, a brand that's pushed hard to rebuild its rear-drive reputation, could develop a new entry-level model based on the front-wheel-drive 2016 Chevrolet Cruze's D2XX platform. Go ahead and make your Cimarron jokes. Sources are telling GM Inside News that a Cadillac built on the Delta platform would ditch the Cruze's turbocharged 1.4-liter four-cylinder for a 1.5-liter turbo in base models. General Motors' well received 2.0-liter turbo four would serve in higher-end models. According to GMIN, the Delta-based Cadillac would likely command a $6,000 to $9,000 premium over the Cruze, so figure $23,000 to $26,000 on the low end to $30,000 to $33,000 for something at the top of the range. As much as we dislike the kind of badge engineering that brought us the Cavalier-based Cadillac Cimarron in the '80s, the company has done an admirable job of distinguishing vehicles on shared platforms lately. A Delta-platform Cadillac would at least have a good basis – the new Cruze is surprisingly comfy. That said, we question GM's rationale if this rumor is indeed true. Put simply, Cadillac needs another sedan like I need another student loan payment. The company has four sedans, three of which overlap two segments, and none of which are selling very well. That's not because they're bad, but because customers want crossovers, of which Caddy has but one – the new XT5. Spending the time and money to add a fifth sedan to the mix when the company desperately needs to flesh out its CUV range would be a tremendous mistake. As much as we hate to say it, if Cadillac really wants to add a small, entry-level car to its range, it'd better be a crossover. Related Video: