2008 Mazda Mazdaspeed3 2.3 Turbo Hatchback - Gray Mica on 2040-cars

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Mazda files patents for a sequential twin-turbo setup

Mazda has a history of interesting engine technologies, from yesterday's rotary engine to tomorrow's compression ignition engine, and new patents show it still may have some internal combustion tricks up its sleeve. The one on display in these patents isn't especially new in concept, though. A sequential twin-turbocharger setup is something Mazda itself used on the third-generation RX-7. But it's something we haven't seen much of lately. It looks like it could have some possible advantages over older sequential systems, and it has some potential advantages for enthusiasts. First a quick and dirty primer for what makes a sequential twin-turbo system distinct from other twin-turbo systems. In many twin-turbo engines, there are simply two turbos that work together as one bigger turbo. They're the same size, and they spool up at the same time. With a sequential setup, at low rpm, a smaller turbocharger is spooled up first at low-rpm for quicker throttle response, and as the rpm and exhaust pressure increases, a valve opens up that allows a larger turbocharger to also spool up and provide high-rpm boost. That's basically how the Mazda design shown above functions. A big flap blocks off the larger turbocharger exhaust inlet, channeling all the exhaust to the smaller turbo. When more exhaust is available at high rpm, it looks like that flap opens up to spool up the big turbo, too. What's interesting here is that the way the turbochargers are packaged takes up less space than past systems. It looks like both turbos are contained in one unit that shares the same exhaust outlet, meaning the exhaust manifold could be kept simple and compact. In fact, the piping for compressed intake air could also be shared, reducing the amount of piping, which would further decrease the amount of materials and possible failure points. There are a number advantages of making this system smaller. The potential applications of the system are much greater, since it could fit in smaller cars with smaller engine bays. Making the system smaller also means that there won't be as much weight, which is important from both fuel economy and performance standpoints. Finally, the smaller setup likely uses fewer materials, which could make the system cheaper and thus easier to offer on a wider range of vehicles, or at least more profitable for Mazda.

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.

Living Life Large: Driving $2 million worth of cars in one week

Monterey Car Week has quickly become one of my favorite events of the year. There's something for everyone – classic car shows, modern concepts and new vehicle debuts, auctions, racing, and so much more. From a media perspective, there's also a chance to drive a ton of cars. Many automakers bring their latest wares out to Monterey for us to test during our limited free time, and it's a great opportunity to experience fantastic metal against a gorgeous backdrop. That's exactly what I did this year. Instead of flying into Monterey and being driven around, my journey started in Los Angeles and ended in Napa, and I managed to get behind the wheel of some $2 million worth of new cars. Some were old favorites, and many were new experiences. But looking back, this was one of the best weeks of driving I've had in years. Rather than try to come up with some common arc to tie these cars together, here are my notes on all the cars I tested in California earlier this month, presented in the order in which they were driven. 2016 Mazda CX-3 The CX-3 pictured here isn't the exact one I drove in California, but it's close. The only difference was color – my delivered-to-LAX tester wore Mazda's awesome new Ceramic hue (pictured below on the MX-5 Miata). I used the CX-3 to slum through crummy Los Angeles traffic for two hours on the way out to Santa Barbara, with a quick stop at In-N-Out Burger on the way for good measure. A lot nicer inside than I remember. Everyone praises Mazda for its excellence in engineering and design, but there's a lot to be said for the improvements in overall interior refinement. Quiet, comfortable, and well-equipped; the CX-3 made sitting on the 405 freeway a lot more pleasant. Not all that functional. I had a hard time fitting a week's worth of luggage for two people inside. The cargo area and rear passenger compartment were filled, with only enough room on top to see out the back window. A Honda HR-V would've swallowed all that luggage with plenty of room for more. So good to drive. Not surprising, since this wasn't my first time in the CX-3. I knew this CUV would be good on twisty roads, but on the highway it's really exceptional. Road and wind noise are minimal and the overall ride quality is a comfortable sort of sporty. This is definitely something I could drive every day – it's enjoyable during commuting and entertaining on more interesting roads.