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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).

Ford Focus RS ready to make our hot hatch dreams real

Ford's current hot hatch siblings the Fiesta ST and Focus ST are already two pretty great entries into the segment, but there's always a desire for a little more. Thankfully, it looks like the Blue Oval is ready to satiate that need because it's continuing to test the even more powerful Focus RS around Europe. According to our spy shooters, these shots come from near the Nürburgring.
As with previous photos, Ford engineers continue to heavily camouflage the front end of the RS prototypes, but there's a big difference here. Unlike earlier ones, this example appears to have a closer-to-production-ready front bumper rather than just a horizontal strip for the license plate. That may point to development getting somewhat closer to wrapping up. Although, this one lacks the larger rear wing from prior testers, and the exhaust also appears to be a work in progress with the rear diffuser covered in mesh in these latest shots.
The RS is rumored to be using the 2.3-liter turbocharged four-cylinder from the 2015 Mustang, but power is reportedly turned up from 310 horsepower in the 'Stang to somewhere between 325 hp and 350 hp for the Focus. Routing all that just through the front wheels could be a recipe for serious torque steer, and all-wheel drive is potentially being used for better traction.

Carfection looks for the ultimate pocket rocket

If there's one thing we love, it's a good showdown. Especially when it's on video, done by some Englishmen, and involving some manner of performance machinery. Like this latest clip, for example, from Carfection. The team formerly known as Xcar have assembled three very compelling supermini hot hatches: two we can get on our side of the pond, and one we can't. One American, one Frenchman, and one Brit. One cheap, one expensive, and one somewhere in between. They all pack turbo fours, of course, but placed in entirely different packages. There's the evergreen favorite Ford Fiesta ST, the Renault Clio RS 220 Trophy that should have the rest licked, and the retro rocket that is the Mini JCW. And there's only one way to find out which is the best. It's a tough contest, to be sure, but lest you think it all comes down to specifications or which one's the newest, you'll want to think again. Because when it comes to hot hatches, all the electronic gizmos and power boosts in the world can't show up a perfectly dialed-in chassis that lets you hug the curves and feel like you're going a lot faster than you actually are. But don't take our word for it – see what our British friends have to say about it in the Queen's English in the seventeen-minute clip above. Related Video: