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Chevy Volt outsells Nissan Leaf for first time since October 2013

It's been a rough summer so far for both the Chevy Volt and the Nissan Leaf, the first two plug-in vehicles from major automakers that ushered in the modern plug-in era. In June 2015, sales were down from their 2014 levels. The Leaf was down 11.6 percent and the Volt was down 31.1 percent. For July 2015, things didn't get much better. July 2015's Volt sales of 1,313 were down 35 percent from July 2014 and are down 34.8 percent for the year-to-date. Nissan, on the other hand moved only 1,174 Leafs last month, down 61.1 percent. So far this year, Leaf sales are down 30.2 percent. What's interesting with this steep decline in Leaf sales is that allowed the Volt to outsell the Leaf for the first time since October 2013. Back then, the Volt sold 2,022 compared to the Leaf's 2,002 units. So far, Nissan has sold 83,312 Leafs in the US since the EV went on sale in late 2010. Chevy has sold 80,292 Volts. Even though Tesla doesn't release monthly sales figures, there's a good chance that the pricey Model S was once again the best-selling EV in the US in July, as it was in the first three months of 2015. At that time, Tesla delivered an average of just under 2,000 Model S EVs a month. We might get some insight into more recent numbers during the quarterly investor call on Wednesday. As we've said before, the low sales for the aging plug-ins can be explained by the fact that both the Leaf and the Volt are due for upgrades. The second-gen Volt is coming in a few months. Nissan is being cagey about when the updated Leaf will arrive, but given these latest sales figures, we wouldn't be surprised if the undisclosed timetable gets move up somehow. Related Video: The video meant to be presented here is no longer available. Sorry for the inconvenience.

Why an independent rear suspension for GM's new, full-sized SUVs wasn't easy

A Motor Trend report last month laid out how Cadillac's 4.2-lier twin-turbo Blackwing V8 could be an orphan due to cost concerns in the GM empire. Last-minute chassis changes to Cadillac's new sedans and XT6 crossover led to engine bays that couldn't fit the Blackwing. On the SUV side, according to the report, the new independent rear suspension for big people haulers cost so much to implement that GM ruled out reworking the Escalade to accept the Blackwing. At least one commenter rightly asked how could a suspension swallow that much money. A new piece in Motor Trend has the answer. The excellent Alissa Priddle spoke to Tim Herrick, GM's executive chief engineer for full-size trucks, about why the clean-sheet IRS cost "multimillions of dollars."  First, GM would need to build a new body shop at the Arlington, Texas plant that assembles the automaker's big SUVs to stamp the numerous wholly new parts and panels accommodating an IRS. Then GM would need to design and pay for a new assembly process. On top of those up-front costs, there was the incremental cost of the four-link IRS components being more expensive than those in the trucks' former leaf-sprung solid axles. Herrick endured so many rejections for so long that he remembers the date and time when he got approval for the new unit. He said it came down to a meeting where he told a higher-up, "I'll make you a deal: If we get to the reveal, or if we launch this and you think this was a dumb idea, I'll hand you my badge and let you walk me out." Head to Motor Trend to read the full story. Based on Herrick being on stage to help present the new SUVs to the press, and on our First Ride in the new Chevrolet Tahoe and Suburban at GM's Milford Proving Grounds, it appears this will have a happy ending for all involved. Furthermore, since Herrick worked on the T1 platform that supports the big SUVs as well as the light- and heavy-duty pickups, he understood the demands on the commercial side, too. That could be why when Roadshow asked Tim Asoklis, chief engineer of the Tahoe and Suburban, if the new IRS could endure life in the Chevrolet Silverado and GMC Sierra, Asoklis answered, "Oh, absolutely." Related Video:    

With only 246 Volts sold in Australia, Holden not getting next-gen model

The Chevrolet Volt has not been the resounding success General Motors hoped for here in the United States. But it's fortunes in Chevy's home country are nothing compared to how poorly it's done down under. Only 246 Volts have been sold in Australia, where the car is branded as a Holden, since its debut in 2012. That's not just a bad showing – it's an absolute disaster. According to Motoring.com.au, it was the Volt's astonishing $60,000 price tag, combined with a lack of interest from Aussie drivers, that killed the car's chances. What's fascinating about this development, though, is that it doesn't necessarily seem to be Holden that's pulling the plug. Instead, it's the Volt's Hamtramck, MI factory, which is preparing to shift into production of the second-generation model that seems to be taking the blame. According to Motoring, the plant confirmed that it will only build the Gen 2 plug-in in left-hand-drive form, basically ruling out a model for Australia. "Electric and hybrid vehicles haven't taken off in Australia," Holden's director of communications, Sean Poppitt, told Motoring. "Considering the lack of infrastructure, the lack of government incentives, the large distances between cities, it's a tough sell." The death of the right-hand drive Volt won't be the only loss of business in Hamtramck. Opel has already confirmed that it will drop the plug-in's European fraternal twin, the Ampera, while the next-gen Chevy won't make the trip across the pond either. Related Video: