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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

Want a V8 on the cheap? Buy a work truck

In case you didn't notice, V8 cars have gotten pretty expensive. If you want a modern muscle car like the Dodge Challenger R/T, Ford Mustang GT, or Chevy Camaro SS, you'll need between $34,000 and $38,000 for a stripped out example of one. The cheapest of those is the Challenger, and the priciest is the Camaro. These are also the cheapest V8 cars the companies offer. But if you absolutely have to have a V8 for less, there is an option, work trucks. As it turns out, all of the Big Three offer their most basic work trucks with V8s. And because they're so basic, they're pretty affordable, especially when sticking with the standard two-wheel drive. A Ram 1500 Tradesman with a V8 can be had for as little as $29,840, which is a little more than $4,000 less than a Challenger R/T. For a bit more at $30,275, you can have a Chevy Silverado W/T, almost $8,000 less than a Camaro SS. The most expensive is the V8 Ford F-150 starts at a starting price of $30,670, which is a bit over $5,000 less than the Mustang. Of course you'll be in an ultra bare bones vehicle with few comforts, and the price will go up if you add stuff, but we're bargain hunting here, and sacrifices are sometimes necessary. Besides, what you lose in comfort, you gain in loads of cargo space and towing (try to look at the bright side). Also, as a side note, all three trucks are available with optional electronic locking rear differentials. At the discounted price of these trucks, you still get a heaping helping of power. The most potent of the trio is the Ram 1500 Tradesman with 395 horsepower and 410 pound-feet of torque generated by a 5.7-liter V8. Compared with the Challenger R/T, the Ram is up by 20 horsepower and they're tied for torque. The value proposition is even more stark between the two vehicles when looking at the price per horsepower. Each pony in the Ram costs $75.54, while the Challenger charges you $90.91. The Challenger is also more expensive per horsepower than its close competitors. The F-150's 5.0-liter V8 is just barely behind the Ram with 395 horsepower and 400 pound-feet of torque. That's still more power than the Challenger, and it matches the torque of the 2017 Mustang GT. On the down side, it still would be down 20 horsepower on that same 2017 Mustang, and it's behind by 60 horsepower and 20 pound-feet on the new 2018 Mustang GT. The F-150 also just edges out the Mustang in the dollar per horsepower measure.

Weekly Recap: Racing legend Jim Hall explains Chevy's futuristic Chaparral concept

"I said our cars are built to be winners." – Jim Hall Racing legend Jim Hall never thought he'd be a video game consultant, but when Chevrolet asked for his advice to create a futuristic Chaparral for the Vision Gran Turismo series, he was eager to help. He reviewed early sketches and suggested some changes that made it onto the concept, including the addition of a camera that's mounted onto a mast over the cabin to aid the driver. The Chevy Chaparral 2X Vision Gran Turismo concept was revealed this week at the Los Angeles Auto Show and will be part of a downloadable update for PlayStation 3's Gran Turismo 6 in December. Theoretically, at least, it uses a laser-beam propulsion system and an air-powered generator to produce 900 horsepower in the video game. It's capable of sprinting to 60 miles per hour in 1.5 seconds en route to a top speed of 240 mph. Those gaudy performance specs – even in the virtual world – came at Hall's urging. "I said our cars are built to be winners," Hall told Autoblog on the floor of the Los Angeles show. The 79-year-old drove Lotus racecars in Formula One before launching the successful Chaparral Cars in the 1960s. Like his innovative Can-Am racers, the Vision Gran Turismo project has an eye toward the future. It also introduces the iconic Chaparral name to a new generation of fans, and hopefully, Hall says, gets them excited about engineering and design. "It emulates what we did in the '60s," he said. And what they did back then still resonates. Chaparral Racing and Chevy partnered more than 45 years ago for development work on the composite monocoque chassis, lightweight alloy powertrains, automatic gearboxes and active aerodynamics. "He [Hall] walked right back into this and was able to apply thinkings and learnings," said Clay Dean, General Motors executive director of advanced design. The Chevy Chaparral 2X Vision Gran Turismo concept was created at GM's North Hollywood advanced design studio, and it will be on display at the show through November. Other News and Views Sebastian Vettel joins Ferrari team in 2015 Ferrari confirmed that four-time Formula One World Champion Sebastian Vettel will join the Scuderia for the 2015 season, jettisoning Ferrari's current ace, two-time champ Fernando Alonso. Vettel has been F1's most successful driver since Michael Schumacher, though he's struggled to match his previous accomplishments in 2014.