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Why the 38-mpg 2014 Mazda6 is on dealer lots, but you can't drive it

If you stop by your local Mazda dealer this month, with any luck, you'll see the much-anticipated 2014 Mazda6 parked in the showroom - there are already a few hundred of them out there. That's quite an accomplishment in light of the fact that it isn't even calendar year 2013. The move is part of a strategic decision by the Japanese automaker, which is hoping to capitalize on holiday showroom traffic. (The last five days of the year are typically among the busiest dealer days all year).
If you happen to spy the rakish sedan, you may notice something missing - a window sticker. That's because Mazda (like other automakers) can't legally display the Monroney on a 2014 model year vehicle until January 1, 2013. According to Autoblog sources, Mazda dealers are legally prohibited from letting you test drive until the start of 2013, so it's more of a sneak preview than anything else. Even so, we reckon shoppers will be impressed when they finally get a look at those window stickers - Mazda hasn't announced fuel economy figures yet, but Autoblog has learned that the 2014 model will carry a pair of impressive numbers: EPA estimates of 27 miles per gallon in the city and 38 mpg on the highway using regular gas.
Mazda dealers are legally prohibited from letting you test drive until the start of 2013, so it's more of a sneak preview than anything else.

Next Mazdaspeed3 could go naturally aspirated?

The new Mazda3 is a stunner, both aesthetically and from a driving perspective. As with all good things, though, there's always room for improvement. That's where the wizards from Mazdaspeed come in. Mazda's in-house tuner has been tweaking and turbocharging the five-door Mazda3 since 2007, with impressive results.
We've shown you renderings of what the third-generation Mazdaspeed3 could look like, and for the most part your response was quite positive. Now, AutoExpress has come out with details of just what might be under that long hood. According to our friends across the pond, the new Mazda3 MPS (that's what the Speed3 is called in Her Majesty's auto industry) will be arriving with a new, high-revving, naturally aspirated engine. Wait, what?
Yes, if the rumors are to be believed, the next Mazdaspeed3 will ditch its turbocharger. According to an anonymous engineer, the new MS3 will arrive in December (this is for the UK market, mind you) with a 200-horsepower, naturally aspirated engine. The 2.0-liter mill is based on the Skyactiv engine in the new 3, and should be capable of a sub-seven-second run to 62 miles per hour.

Mazda's next-gen SkyActiv engines will drop spark plugs in favor of high compression

Homogeneous charge compression ignition, or HCCI, is the black art of internal combustion engines that aims to produce diesel-like fuel efficiency for the cost of gasoline. Although some of its competitors have developed and subsequently given up on the tech, Mazda confirmed that the next-generation of SkyActiv engines will employ HCCI technology, improving fuel economy by 30 percent and at the same time reducing exhaust emissions. According to Nikkei, a new SkyActiv family of engines is set to debut under the hood of the next-gen Mazda3 sometime in 2018 before making its way into other vehicles. In simple terms, an engine that uses HCCI burns the air/fuel mix using pressure instead of with spark plugs, just like a diesel. At 14:1, Mazda's gasoline engines already have some of the highest compression ratios out there, but a move to HCCI means cranking up the compression to 18:1. While the tech sounds relatively straightforward, using HCCI means dealing with a number of side issues. It's one of those "on paper" ideas that compounds problems when put into practice. Heat, revs, and fuel must all be carefully managed as gasoline doesn't burn the same way as diesel. Mazda is mum on details, but the automaker seems confident that the issues have been sorted. If the new engines do indeed make it to market with HCCI, Mazda will have out-engineered GM, Daimler, and Hyundai, all of which have tried and failed to develop HCCI engines in a cost-effective package. With the market moving towards electrification, it's interesting to see Mazda still focusing so heavily on traditional internal combustion gasoline engines. It's an indication of where they see the market heading for the next few years. Although the automaker has been hesitant to move forward with hybrid and electric powertrains, Nikkei also reports that Mazda will begin mass production of EVs in 2019. Related Video: