1986 Chevrolet Monte Carlo Ss Coupe 2-door 5.0l 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

Chevy's 6.6-liter Duramax is pretty much all new

To say there's a heated battle in heavy-duty pickups is an understatement, with Chevrolet, Ford, and Ram constantly trading blows of increased torque, horsepower, and towing capacity. The latest salvo is the revised, more powerful turbo diesel 6.6-liter Duramax V8 in the 2017 Chevy Silverado. It has 910 pound-feet of torque, an increase of 145, putting it nearly level with the Ford Super Duty. Here's a closer look at where those gains come from. How exactly did Chevrolet add all that torque plus 48 horsepower? The automaker essentially took a fine-tooth comb to the entire engine. Chevy says it changed 90 percent of the V8, and the cumulative effect of those small changes adds up to big increases. As you might guess, the turbocharger is updated. The larger unit features electric actuation of the variable nozzle turbine (VNT), and what Chevy calls a double axle cartridge mechanism that separates the VNT moving parts from the housing. That helps with heat performance as well, with a claim that the exhaust side of the turbo can run continuously up to 1,436 degrees Fahrenheit. Helping that cause are six exhaust gaskets made of Inconel - an nickel alloy that contains chromium and iron – and upgraded stainless steel for the exhaust manifold. Despite having the same cast iron cylinder block, albeit with some minor enhancements, the engine has new cylinder heads, pistons, piston pins, connecting rods, and crankshaft, which have all been upgraded to handle 20 percent higher cylinder pressures. Alongside the increase in pressure, Chevrolet also increased the cylinder head's structure with a honeycomb design. The pattern features high-strength aluminum with dual layer water jackets that not only improve strength, but also optimize water flow for better cooling. For 2017, the cylinder head also benefits from integrated plenum that aids the engine in getting more air under heavy loads. The cylinder head isn't the only component to get a minor update, as the pistons have a larger diameter pin for improved oil flow. The same detailed improvements has been bestowed to the humble connecting rods (second in our hearts only to the inanimate carbon rod). The new design has the bolts oriented roughly 45-degrees to the rod instead of parallel. The angle split design, as it's called allows for easier passage through the cylinder.

2016 Chevy Colorado grabs Motor Trend Truck of the Year award

It's not an easy feat to win Motor Trend Truck of the Year twice in a row, but the 2016 Chevrolet Colorado managed to do just that. Thanks to the introduction of the 2.8-liter Duramax four-cylinder diesel, the magazine decided to bring the pickup back to defend the title. In more good news for the Bowtie brand, the 2016 Camaro earned the magazine's Car of the Year award. The Colorado beat a tough group of finalists to earn the nod this year, including its GMC Canyon sibling. The Chevy Silverado and GMC Sierra also made this year's list. The Nissan Titan XD and latest Toyota Tacoma rounded out the challengers. A model had to shine in six criteria to earn the title: advancement in design, engineering excellence, safety, efficiency, value, and performance of intended function. Like it did with the Camaro, Motor Trend posted a story online that explained the rationale for picking the Colorado again. They praised the diesel profusely and lauded the whole platform as quite a capable hauler. This year's Motor Trend SUV of the Year honor went to the Volvo XC90. The Swedish 'ute had to win against an initial group of 16 candidates that the magazine eventually whittled down to finalists that consisted of the Honda Pilot, Lincoln MKX, the combined Mercedes-Benz GLE-Class and GLE Coupe, and Nissan Murano. "Seven-passenger people movers aren't supposed to drive like this," senior features editor Jonny Lieberman said about the Volvo in the announcement of the champions. The Honda CR-V won last year. In the explanation online, the judges applauded the XC90's new modular platform, and they loved both the T6 twin-charged engine and T8 hybrid version. The SUV's key enamored the writers, too. Related Video: MOTOR TREND Announces 2016 "Of The Year" Winners Car of the Year, Truck of the Year, SUV of the Year, and Person of the Year announced during live ceremony and webcast in Los Angeles LOS ANGELES, Nov. 16, 2015 /PRNewswire/ -- Today, for the first time in the brand's 66-year history, MOTOR TREND announced winners of the Golden Calipers for Car of the Year, Truck of the Year, SUV of the Year, and Person of the Year at a red-carpet gala in front of an audience of industry insiders and celebrity guests. The awards show was also streamed live on the MOTOR TREND Channel on YouTube, with 3.5 million subscribers the world's largest automotive video channel, and on MOTOR TREND OnDemand, the brand's new subscription video on demand (SVOD) channel.