Limited Edition 1993 Mazda Miata Le Convertible 2-door 1.6l 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.

Miata is always the answer, but not always the best one

The Mazda MX-5 Miata is a surprisingly versatile car. Not only is it hilariously fun on back roads and closed courses, it can also be a decent daily driver thanks to its solid gas mileage and usable trunk. But, it doesn't excel in every driving situation. Specifically long trips at high speeds, and those involving canine companions. This weekend, I did a roughly 500-mile round trip to my parents' home in Indiana to pick up my recently adopted dog. The trip was 90-percent highways, and I heard every single mile. Our MX-5 Miata Club has the minimally insulated top also found on the base level trim, and at highway speeds the wind and road noise fills the cabin with a loud, steady roar. This likely won't be a problem for fans of white noise, and it can be overcome by the stereo. However, over a few hundred miles, it starts to get old. The suspension, while superb for carving corners, also gets tiresome. On rough Rust Belt highways, it would become a bit overwhelmed, and the whole car would shiver and shake. On the plus side, nothing squeaked, rattled, or fell off in these instances. There are a few other quirks that show up on long trips. The small pedal box and floor-mounted throttle means that there isn't a particularly comfortable place to rest your right foot when the cruise control is set. Neither the door nor the center console have much padding either, so leaning your knees against them for long periods of time isn't advisable. The good news is that the seat itself was surprisingly comfortable, and never once was I feeling any back pain. Plus, when not using the cruise control, the seating position is great, allowing me to stretch out and relax. When I picked up my four-legged compatriot (a 7-year-old mix of unknown breeds named Ruby, pictured above), things became a tad tight. Standing up, she thoroughly filled the passenger compartment. For reference, she's a little over 50 pounds and stands a little more than 2 feet tall. Much bigger dogs, like my family's coonhound and German shepherd mix, won't really fit. This also made her prone to nearly face-planting on the dashboard anytime the car slowed down. She eventually figured out that simply curling up on the seat bottom was the best choice, and then slept for most of the trip. So it worked out, but I think I may have found the limit of a Miata's dog capacity. Would any of this make me want a Miata less? Certainly not. That is if I had a second car.

25th Anniversary Edition Mazda MX-5 Miata sells out in 10 minutes

Looking to buy one of the limited-edition 25th Anniversary Mazda MX-5 Miata roadsters? Well, you're too late. According to Mazda, all 100 examples of the darling two-seater have sold out - and it only took 10 minutes.
On Tuesday, Mazda opened its pre-order site for the limited-run Miata, and had intended to keep the site running until May 31, or until 250 customers were registered, whichever came first. Just 10 minutes later, 250 people had signed up. Now, Mazda will contact those folks, and the first 100 that are verified will be given the opportunity to pre-order the unique MX-5. "Upon verification of purchase intent and transmission selection, the customer's information will then be forwarded to the dealership of their choosing to finalize the transaction," Mazda said in a press release.
The 2015 MX-5 Miata 25th Anniversary Edition models will arrive at dealers this summer, retailing for $32,205 with the six-speed manual, or $32,655 for those desiring the automatic transmission. Based on the PRHT (Power Retractable Hard Top) model, the limited-edition Miata adds Bilstein shocks, a Soul Red metallic paint job (the same found on the gorgeous Mazda6) with a contrasting black roof, gunmetal wheels and an off-white leather interior. Special badging will be found inside the car, and buyers will also be treated to a custom-crafted Tourneau watch and a display winder box.