1965 Chevrolet C-10 10 Series Blueprint Engine on 2040-cars

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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

Diesel Power finds the ultimate modified oil-burner

For nine years, Diesel Power magazine has run the Diesel Power Challenge, this year's grindfest being "a week-long torture test that features seven events, nine trucks, 8,000 horsepower, and nearly 15,000 pound-feet of torque." The road to being crowned "the most powerful truck" starts with a dyno run, and then continues through the completion of a CDL-style obstacle course, an eighth-of-a-mile drag race while towing a 10,000-pound trailer, a quarter-mile drag race without a trailer, a fuel economy test in the mountains and finally a sled-pulling test through a 300-foot-long packed-mud pit.
What kind of trucks get into such a fight? Last year's winner, for instance - who upgraded his truck this year to prove he didn't "luck into the win" - drives a 2008 Ford F-250 Super Duty with a 6.4-liter Power Stroke V8 upgraded with a custom intake, Elite Diesel triple turbos and a two-stage nitrous system. Another competitor has a 2005 Dodge Ram 2500 powered by a 5.9-liter Cummins inline-six, upgraded with Garrett turbos, dual-stage nitrous, a seven-inch exhaust stack and twin fans built into the bed to cool the Sun Coast Omega transmission. The numbers on that truck: 1,255 horsepower, and 2,063 pound-feet of torque at the wheels. Naturally, as the image above might suggest, things don't always end well.
You'll find all five videos covering this years challenge below. A scene in the dyno video sums it all up perfectly: a competitor leaves his nitrous on too long and the crew is treated to some ominous poppings, he leans out the window, throws both hands up and shouts, "Amer'ca!"

Nissan Leaf ends 2013 with best sales month ever, but can't catch Chevy Volt

Nissan and Chevrolet both ended 2013 with solid sales figures for their plug-in vehicles, the first two that were released (all the way back at the end of 2010) from major automakers. As has been the story for most of 2013, December sales for the Nissan Leaf and the Chevy Volt were roughly the same. When we left the year-to-date running tally at the end of November, the Volt was at 20,702, while the Leaf was at 20,080. As you can tell from the image above (if you've been noticing the trend in these EV sales monthly flash-reports), the Leaf outsold the Volt, but was it enough to put the Nissan on top for the year? In 2013, Nissan sold 22,610 Leafs, more than twice as many as in 2012. Almost. The Leaf made a valiant attempt, and did have its best month ever with 2,529 units sold. That means that for 2013, Nissan moved a total of 22,610 Leafs, more than twice as many as in 2012 (that year, Nissan sold only 9,819 Leafs in the US) and actually more than 2012 and 2011 Leaf sales combined (which was 19,493). Nissan continues to see the effects of its price drop and expanded sales areas, with Georgia rapidly becoming a Leaf hotbed. Nissan's Paige Presley said that Atlanta was once again the Leaf's number one market and that, "sales are expanding deeper into Georgia markets such as Macon and Columbus." The Volt saw a boost upwards from a November slump and sold 2,392 units in December. That puts the plug-in hybrid's annual total at 23,094, just down from the 23,461 sold in 2012. For all of 2013, though, the Volt outsold the Leaf by 484 vehicles. In a competition like this, we'll count that as a win for both sides. We will our more detailed monthly green car sales report, which covers more of the fuel efficient vehicles on the market, up soon. News Source: GM, Nissan Green Chevrolet Nissan Electric Hybrid PHEV ev sales hybrid sales