1984 Mazda Rx-7 Gs Coupe 2-door 1.1l on 2040-cars

Auto blog

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.

Mazda and Lexus crowned with KBB 5-Year Cost To Own awards

We report on a lot of awards, some of which are given out based on more solid criteria than others. This one, the Kelley Blue Book 5-Year Cost to Own awards, seems like one that new car shoppers should pay attention to.
The cost of a car goes far beyond what you pay for the actual metal, leather and rubber at the point of purchase. Fuel, insurance, maintenance and repair costs, and the cost of fees from the state and financing will all weigh on your wallet while you own the car. That's not even taking into account the biggest cost: depreciation, or the amount of money you lose based on what your car is worth years from now versus the day you bought it.
KBB tracks these sorts of things, and they've compiled a list of winners for 2013 models. On the brand level, Mazda and Lexus earn the 5-Year Cost to Own award for having the lowest overall projected five-year totals (though, curiously, we note that Mazda and Lexus each had only one segment winner). There are lots of winners for all the various segments, so we'll just pick out a few surprising ones to share and you can view the rest here.

2019 Mazda 6 gets more expensive, adds equipment and drops the manual

Update: We got wind of what Mazda had in store for the 2019 Mazda 6 in this report from last week, and now we have all the official information from Mazda. The news on the manual transmission's disappearance is still true — 2018 model year cars will be the last ones that make that an option. There are a few changes Mazda has implemented for this model year, and a slight price adjustment that goes with. The addition of Mazda's i-Activsense safety tech as standard is confirmed. As is G-Vectoring Control Plus, the next generation of Mazda's G-Vectoring we saw hit the CX-5 for the 2019 model year. Pricing has been adjusted to reflect the extra standard equipment and elimination of the manual transmission. A base (manual) 2018 Mazda 6 Sport costs $22,845 with its $895 destination fee, but the new 2019 model begins at $24,720 with the $920 destination fee included. That's a considerable increase, but the charge for an automatic transmission was $1,050 of that previously. Higher trim levels don't experience as much of a hike. For example, the maxed-out Signature is only $375 more expensive in 2019, coming in at $36,020 total. Mazda says the 2019 Mazda 6 goes on sale this month. It's a little surprising that 2019 model year Mazda 6s weren't already on sale, but mid-year updates or late introductions aren't exactly out of the norm for Mazda. Since its introduction, the current generation Mazda6 has always remained a top choice among driving enthusiasts. That's because it's one of the few cars left in its class to still offer a manual transmission, next to the Honda Accord. But sadly, it seems even that's going to disappear for the 2019 model year update. CarsDirect originally heard through the grapevine that the Mazda6 sedan will be losing its standard six-speed manual while gaining some new safety tech. At first, we here at Autoblog were in denial. We had to reach out to Mazda to verify this unfortunate news. And sadly, it seems CarsDirect's findings are accurate, with Mazda USA's marketing and brand communications manager, Drew Cary, replying to our inquiry with the following statement: At Mazda we are always listening to our fans, especially when it comes to what they are looking for from our vehicles. As we have moved the Mazda6 upscale with the launch of the Grand Touring Reserve and Signature models, we have seen less demand for a manual transmission option.