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Aluminum lightweighting does, in fact, save fuel

When the best-selling US truck sheds the equivalent weight of three football fullbacks by shifting to aluminum, folks start paying attention. Oak Ridge National Laboratory took a closer look at whether the reduced fuel consumption from a lighter aluminum body makes up for the fact that producing aluminum is far more energy intensive than steel. And the results of the study are pretty encouraging. In a nutshell, the energy needed to produce a vehicle's raw materials accounts for about 10 percent of a typical vehicle's carbon footprint during its total lifecycle, and that number is up from six percent because of advancements in fuel economy (fuel use is down to about 68 percent of total emissions from about 75 percent). Still, even with that higher material-extraction share, the fuel-efficiency gains from aluminum compared to steel will offset the additional vehicle-extraction energy in just 12,000 miles of driving, according to the study. That means that, from an environmental standpoint, aluminum vehicles are playing with the house's money after just one year on the road. Aluminum-sheet construction got topical real quickly earlier this year when Ford said the 2015 F-150 pickup truck would go to a 93-percent aluminum body construction. In addition to aluminum being less corrosive than steel, that change caused the F-150 to shed 700 pounds from its curb weight. And it looks like the Explorer and Expedition SUVs may go on an aluminum diet next. Take a look at SAE International's synopsis of the Oak Ridge Lab's study below. Life Cycle Energy and Environmental Assessment of Aluminum-Intensive Vehicle Design Advanced lightweight materials are increasingly being incorporated into new vehicle designs by automakers to enhance performance and assist in complying with increasing requirements of corporate average fuel economy standards. To assess the primary energy and carbon dioxide equivalent (CO2e) implications of vehicle designs utilizing these materials, this study examines the potential life cycle impacts of two lightweight material alternative vehicle designs, i.e., steel and aluminum of a typical passenger vehicle operated today in North America. LCA for three common alternative lightweight vehicle designs are evaluated: current production ("Baseline"), an advanced high strength steel and aluminum design ("LWSV"), and an aluminum-intensive design (AIV).

Here's what the UAW will be angling for in next year's contract negotiations

The United Auto Workers union is about to enter a new round of negotiations with the Detroit Three automakers, and this time, the focus is on the end of the two-tier wage system. Introduced in 2007, the two-tier wage system was enacted to allow General Motors, Ford and Chrysler to categorize its hourly employees under two categories: Tier 1 for veteran employees with full rights and benefits, and Tier 2 for short-term or entry-level employees compensated under a different schedule. The idea was that the system would permit the automakers to invest more in their plants and hire new employees as part of their respective recovery plans without being saddled with all the costs associated with hiring full-time employees. Now that the automakers are (more or less) back on their proverbial feet, however, the UAW wants to see an end to the two-tier system, and will likely make that a center-point of its negotiations next year to replace the current arrangement that is scheduled to end in September 2015. Not all members of the UAW will necessarily be interested in ending the two-tier system, however. According to The Detroit News, some Tier 1 workers may be more interested in negotiating a raise in their hourly rate – something which they haven't received in almost a decade. Tier 2 workers, meanwhile, may be more motivated to keep the tiered system in place, as their arrangement includes provisions for profit-sharing payments that have seen the automakers pay out billions to so-called short-term employees in lump-sum payments. Reconciling the two competing demands from two categories of union members and presenting a united front in negotiations may prove the biggest challenge for the UAW's new president, Dennis Williams. And with the right to strike – something which was suspended during the last round of negotiations in 2011 – the union has a bigger bargaining chip in its pocket.

Cadillac Escalade gets $5,000 discount to ward off Lincoln Navigator

General Motors apparently isn't going to let early good reception for the redesigned Lincoln Navigator steal thunder from its own luxury SUV without a fight. It's offering a $5,000 discount on the purchase or lease of the Cadillac Escalade this month to any buyer who trades in a 1999 or newer Lincoln model, Bloomberg reports. GM spokesman Jim Cain told Bloomberg the incentive is being offered to keep prices competitive for the Escalade. The 2018 Navigator starts at $72,055, compared to $73,995 for the Escalade, but the outgoing version of the Navigator is selling for an average of around $53,000, compared with more than $80,000 on average for the Escalade, he said. The Escalade was the top-selling domestic luxury SUV in October and No. 4 in the segment, according to Motor Intelligence. It far outsold the Navigator, which last saw a refresh in 2015 and a full redesign in 2007. But Ford is hoping to gain back some ground with the new Navigator and updated Expedition, which also trails the Chevrolet Tahoe and Chevy Suburban in its segment. Bloomberg notes that one Morgan Stanley analyst estimates that GM owns a $2 billion annual pretax profit edge in the lucrative luxury sport utility segment. Our recent First Drive review called the new Navigator "far superior to its primary competitor, the Cadillac Escalade."Related Video: