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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

Third 1987 Buick Regal GNX will be auctioned in January

A member of the 1987 Buick press fleet is hitting the auction block next year and it's a rarified gem: a low-mileage Regal Grand National GNX, serial No. 003 and one of just 547 models built for that year, and the last of the traditional body-on-frame, rear-wheel-drive Grand Nationals. It'll be auctioned at the Barrett-Jackson Scottsdale Auction in January. The GNX No. 003 was loaned out to publications including Autoweek, Motor Trend and Road & Track, where it racked up around 8,200 miles. "Through it all, a constant sad undertone was the understanding that 1987 was to be the final appearance of the traditional body-on-frame, rear-wheel-drive G-body (which also underpinned the best-selling Chevy Monte Carlo, Pontiac Grand Prix and Olds Cutlass)," reads a the description published on Barrett-Jackson's website. "A totally redesigned W-body Somerset Regal, with front-wheel drive and unitized body construction, was slated to replace the popular midsize Buick in 1988." So Buick opted to make "a Grand National to end all Grand Nationals" with the '87 GNX, partnering with ASC/McLaren to equip them with wheel lip flares, fender vents, 16-by-8-inch BBS rims and more aggressive tires. It left untouched the Grand National's standard Sequential Electronic Fuel Injection 3.8-liter V6 but added a larger Garrett T-3 turbocharger with a ceramic impeller, a larger intercooler, more aggressive fuel, spark and waste gate tables, and a dual exhaust system that boosted output from 235 horsepower and 330 foot-pounds of torque to 276 hp and 360 lb-ft. That was enough, Barrett-Jackson reports, to make the performance coupe quicker and faster in quarter-mile tests than the Ferrari F40 and Porsche 930 Turbo. After making the test-drive rounds in the automotive media, the car sold in 1988 as a brass hat/company official car to Fischer Buick in Troy, Mich. with approximately 8,200 miles on it. From there, it quickly sold to a local resident who drove it very little, and sold it in the spring of 1989. Since 1992, it has reportedly been kept in climate-controlled storage, totally original, unmodified and undamaged, with just 10,790 miles on the odometer today. It recently underwent a complete mechanical service and cosmetic reconditioning. You can check out the listing on Barrett-Jackson here. The first '87 GNX ever produced resides in the General Motors Heritage Collection and No. 002 is at the Sloan Museum in Flint, Mich. Interestingly, another '87 GNX, No.

No, Cadillac is not killing its flagship CT6 sedan

Mark Twain never actually said that reports of his death had been greatly exaggerated. But if the Cadillac CT6 could talk, those are the exact words it would use. Speaking to Jalopnik, Cadillac chief Johan de Nysschen confirmed, emphatically, "There is absolutely no plan, at all, to cancel the CT6." In fact, says de Nysschen, the CT6 will soon be the beneficiary of significant investment. "The [CT6] forms a very important part of our product strategy going forward for the brand. The car also has a very major contribution to make to the shaping of brand perceptions, and the transformational process that Cadillac is undergoing." For instance, expect the CT6 to spearhead General Motors' most advanced forays into self-driving automobile technology. Interestingly, though, the Cadillac ATS and CTS sedans probably won't live past their current generations as the automaker 're-balances its sedan portfolio.' Replacement models are "in development" right now, says de Nysschen, which will "much more clearly separate the market position, both in terms of target customer demographics, in terms of market segments and in terms of price points between these three sedan lineups." So, that's confirmation that the Cadillac CT6 is going to stick around for a while. But what of other models cited by Reuters to potentially be killed, like the Buick LaCrosse and Chevy Impala and Volt? Read our take on that here, but suffice it to say that we don't think they're in danger, either. Related Video: News Source: JalopnikImage Credit: VCG via Getty Plants/Manufacturing Buick Cadillac Chevrolet Electric Hybrid Luxury Sedan confirmed cadillac ct6