2006 Mazda Mpv Lx Mini Passenger Van 4-door 3.0l on 2040-cars

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Mazda patents show rotary engine for range-extended EV

Two years ago, Mazda introduced a fascinating range-extended electric car called the Mazda2 RE Range-Extender. It took an electric Mazda2, and dropped in an itty-bitty 330cc rotary engine. It wasn't the rotary-powered sports car we had hoped for, but it seemed like a unique way to keep the quirky engine alive and kicking. But not long after the car's reveal, it seemed to disappear. Now the basic idea has resurfaced with a few modern updates in a couple of US patents. The first patent is pretty straightforward and describes a range-extended EV similar to the BMW i3. At the front is an electric motor driving the front wheels. At the back is an internal combustion engine that powers an electric generator. In the middle is a lithium-ion battery for storing and delivering electricity. It's the same set-up as that Mazda2. The second patent is for an engine start-and-stop system, but specifically for rotary engines. The system is designed to shut off a rotary engine when not needed, much as modern piston engines do. It also stops the rotor in a position that closes the intake port to ensure no fuel or exhaust emissions slip out through the intake tract. This is necessary since there are no valves in a rotary, and air and exhaust come through ports that are "opened" and "closed" by the rotor itself. The patent also describes the possibility of firing a spark plug after the fuel has been cut to eliminate any leftover fuel emissions. This system would theoretically improve a rotary engine's fuel economy and emissions significantly, which would be a boon as those are two of the rotary's major weaknesses. The rotary-engine patent also includes the same range-extended powertrain drawing as the first patent. It's there as a description of a possible application. And in such an application, where the rotary wouldn't have to run all the time, the system could take advantage of the rotary's inherent strengths. Weight can be kept low thanks to the engine's small dimensions, which should help in keeping the car sprightly and efficient. Rotaries are renowned for smoothness, too, so it shouldn't need too much refining and sound deadening, the latter of which adds more weight. The small size would also help with packaging, leaving more space for people, cargo, or possibly batteries. And since it has been patented, the company may be looking to bring the system to market.

A tough choice: 2017 Honda CR-V vs. 2017 Mazda CX-5

One has to feel for the typical new-car buyer. The one not reading Autoblog and the one who recognizes a V8 as vegetable juice. For them, picking between compact crossovers must seem like choosing between various identically sized cardboard boxes. Which one do you want? "Ah, I'll take the one with the best deal." Except, with the 2017 Honda CR-V and now the 2017 Mazda CX-5, Joe P. Everyman has a chance to choose between two vehicles that are quite clearly different, yet also clearly leaders in what they do. Everything else seems like alternatives based on price or perhaps off-road readiness (Jeeps Compass and Cherokee, perhaps a Subaru Forester). As scheduling would have it, a 2017 CR-V Touring just happened to be sitting in my garage the week I was set to drive the new CX-5 Grand Touring in San Diego. This isn't a complete, scientifically enacted comparison test, but there was enough drive time in close succession on the same roads and with similar price tags to draw conclusions. At its simplest, the CX-5 is the best choice for the driver while the CR-V is the best choice for everyone else aboard. That's not to say they are myopic in those classifications – the CX-5 could still ably handle family duty, while the CR-V is impressively well-rounded to drive in a way that shouldn't turn off those seeking some driving involvement. However, each has a clear focus that sets it down a different path toward different target buyers. Let's start with the newer kid on the block from Mazda. It is best suited for the person whose life changes have dictated the switch from an agile car to some sort of family hauler. Its spot-on steering and throttle response evoke Porsche, while the six-speed automatic transmission favors performance over fuel economy (while still getting really good fuel economy). Those dynamic elements, plus a carefully crafted, ideal driving position should make the CX-5 feel "just right" for those used to more sporting, non-family-oriented transport. Inside, the latest CX-5 boasts a handsome, upscale design with materials to match. Aesthetically, to these eyes at least, it's the best of a crowded bunch. Quality-wise, only the also-impressive CR-V would seem to come close. Along with the slick new exterior, the cabin conveys the more premium vibe that Mazda was shooting for with the new CX-5 – it also makes a more emotional connection than the typical cardboard box on wheels.

Mazda's Tokyo concepts have us wishing for more Mazdaspeed

It's been a while since we've seen any new Mazdaspeed machinery, and we're sorry to report that today isn't the day the wait ends. But if you want to see what they might look like based on Mazda's latest models, the Tokyo Auto Salon will be the place to be in a couple of weeks. Turns out the Zoom-Zoom brand has a whole raft of performance models in store for the aftermarket expo. Most intriguing to our eyes is the trio of Racing concepts – one based on the MX-5 Miata roadster, one on the CX-3 crossover, and one on the Mazda6 sedan. Each is done up in black with full aero kit, new rolling stock, and Alcantara interior. An adjustable suspension is the big change to the MX-5 – known simply as the Mazda Roadster in Japan – which also features red trim. As does the CX-3, while the Atenza (which we know as the Mazda6) goes for a more monochromatic, murdered-out appearance. The rally-prepped Mazda2 (known domestically as the Demio) focuses on a stripped-out interior with bucket seats, racing harnesses and a roll cage. There's a spec racing MX-5 in white livery with roll cage and tow hooks as well to join the Global Cup roadster we've already seen. That also goes for the RX-Vision and LM55 Vision Grand Turismo concepts which have already made the rounds but will be on display at the Tokyo salon as well. But it's those three Racing concepts that leave us salivating for production performance models to come – and hopefully come to North America in the process. Related Video: