2008 Mazda Mx-5 Miata Grand Touring Convertible 2-door 2.0l on 2040-cars

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Mazda's Skyactiv-X power and efficiency ratings released in Europe

Mazda's long-awaited Skyactiv-X engine is finally headed for production, though not yet for the United States. The Japanese automaker says "various European countries" will get access to the unique engine in the Mazda3 starting this fall. Still, the announcement is relevant to the rest of us because we now have official power levels and fuel efficiency numbers that we can use to compare the Skyactiv-X with other engines offered in the compact Mazda. First, the power. According to Mazda, the 2.0-liter Skyactiv-X makes 178 horsepower and 165 pound-feet of torque. By way of comparison, the 2.5-liter Skyactiv-G engine currently used in the Mazda3 here in the States makes 186 hp and 186 lb-ft of torque. Sure, it's a little less powerful, but note that the displacements don't match and remember that the real reason the Skyactiv-X exists is to reduce fuel consumption. And that brings us to the Skyactiv-X's combined rating of around 53.5 miles per gallon (converted from liters per 100 kilometers). That's around 8 mpg better than the 2.0-liter engine that comes standard in Europe. Before we go any further, it's important to note that these numbers represent official figures for the European NEDC combined cycle, which means they are not directly comparable to the ratings we'll get from the United States EPA. Our official ratings will almost certainly be lower. With that disclaimer out of the way, the 2.5-liter Mazda3 scores a combined 30 mpg here in the States. The obvious unanswered question is when the Skyactiv-X might actually come to America. And the unfortunate answer is that we don't know. Mazda has yet to make an official decision on timing for the U.S market's launch of the engine, but as soon as we know, so will you.

Asian automakers still reluctant to use more aluminum

There's a logical progression of technology in the auto industry. We've seen it with things like carbon-ceramic brakes, which use to be the sole domain of six-figure sports cars, where they often cost as much as an entry level Toyota Corolla. Now, you can get them on a BMW M3 (they're still pricey, at $8,150). Who knows, maybe in the next four a five years, they'll be available on something like a muscle car or hot hatchback. Aluminum has had a similar progression, although it's further along, moving from the realm of Audi and Jaguar luxury sedans to Ford's most important product, the F-150. With the stuff set to arrive in such a big way on the market, we should logically expect an all-aluminum Toyota Camry or Honda Accord soon, right? Um, wrong. Reuters has a great report on what's keeping Asian manufacturers away from aluminum, and it demonstrates yet another stark philosophical difference between automakers in the east and those in the west. Of course, there's a pricing argument at play. But it's more than just the cost of aluminum sheet (shown above) versus steel. Manufacturing an aluminum car requires extensive retooling of existing factories, not to mention new relationships with suppliers and other logistical and financial nightmares. Factor that in with what Reuters calls Asian automaker's preference towards "evolutionary upgrades," and the case for an all-aluminum Accord is a difficult one. Instead, manufacturers in the east are focusing on developing even stronger steel as a means of trimming fat, although analysts question how long that practice can continue. Jeff Wang, the automotive sales director for aluminum supplier Novelis, predicts that we'll see a bump in aluminum usage from Japanese and Korean brands in the next two to three years, and that it will be driven by an influx of aluminum-based vehicles from western automakers into China. Only time will tell if he's proven right. News Source: ReutersImage Credit: Sean Gallup / Getty Images Plants/Manufacturing Honda Hyundai Mazda Nissan Toyota Technology aluminum

2002 Mazda MX-5 Miata powered by a Jaguar-sourced V6 for sale

Cars & Bids, a relatively new site that specializes in auctioning modern enthusiast cars, is selling a 2002 Mazda MX-5 Miata. While that's hardly unusual, this example lost its four-cylinder engine and gained a Jaguar-sourced V6. Pulling a 3.0-liter six out of a 2000 S-Type and dropping it into an unsuspecting Miata is apparently easier than it sounds. England-based Rocketeer offers a kit that makes the swap reasonably straightforward, though the listing notes the factory air conditioning system is not compatible with the new engine. Cold air aside, the installation is done so neatly that it looks like Mazda envisioned the Miata with a bigger engine. Jag's V6 inevitably adds weight to a roadster praised globally for its nimble handling, but it also brings a whole lot of horsepower to the table. Left stock, a 2002 Miata is powered by a 1.8-liter four-cylinder that makes 142 horsepower and 125 pound-feet of torque. The example listed on Cars & Bids puts 220 horsepower and 221 pound-feet of torque under the driver's right foot, figures that easily offset the weight gain. And, somewhat surprisingly, the six spins the rear wheels through a stock five-speed manual transmission. Flyin' Miata sway bars and Koni shocks improve handling. Close the hood, and this Jagazda looks like a run-of-the-mill 18-year-old Miata. The seller made no modifications to the body, it's still painted in its original shade of silver, and he kept the stock 15-inch wheels. The dual exhaust tips hint at the V6, but they're subtle enough to surprise more than a few racers at the next autocross event. The auction is live now, and bidding stands at $4,250 as of writing with about three days left before the hammer drops. If you miss your chance to bag it, several shops sell kits that let skilled shade-tree mechanics shoehorn Mazda's K-Series V6 (which powered the MX-6 and the Ford Probe, among other cars) into an older Miata. Related Video: This content is hosted by a third party. To view it, please update your privacy preferences. Manage Settings.     Featured Gallery 2002 Mazda MX-5 Miata with Jaguar V6 View 14 Photos Aftermarket Jaguar Mazda Convertible