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2016 Mazda CX-9 caught on video

We already know from earlier spy shots that the second-generation Mazda CX-9 is advancing in development, but here's an opportunity to actually see the crossover on the road. The video shows the CX-9's rear, but wait 50 seconds for a good look at it in profile and from the front. The CX-9 is no longer wearing the same camouflage from the last spy photos, but this time it has more cladding to hide the lines. Even with the obfuscation, you can still get a sense of the general shape. The CUV largely looks like a stretched version of the CX-5, which is a great place to start. Rumors suggest the new CX-9 will debut in November at the 2015 Los Angeles Auto Show and to launch in 2016 for the 2017 model year. Power is tipped to come from a turbocharged, 2.5-liter Skyactiv four-cylinder, and all-wheel drive is expected to be available. Related Video:

How Mazda got Skyactiv-X to work is incredible

"Take everything you know about engines and turn it around," Mazda North America Vehicle Development Engineer Dave Coleman says, patiently and with a look of benevolent pity, as he's quizzed about the particulars of the company's new engine. The Skyactiv-X engine is enigmatic — and deceptively simple in operation. And the bottom line for American consumers is that they'll be able to buy a car (or crossover; we don't know yet what vehicle will first get it) by late 2019 that provides diesel-like fuel economy but runs on regular old gasoline. In between diesel and spark ignition, but it's neither To truly understand it, you have to dive into the contradictions. Take that regular old gasoline: Contrary to common sense, the lower the octane, the better it works. In the lab, the Skyactiv-X engine loves 80 octane. The lowest Americans get is 87, so the engine is tuned for that octane. Go higher and you lose some low-end torque. Coleman was right. It's hard to wrap your head around an engine that thrives just at the point when most gas engines would aggressively self-destruct. It uses a supercharger to pump additional air — but not additional fuel. It uses spark plugs to start a combustion cycle that normally doesn't need a spark. And, quixotically, it's not displacing Mazda's own American-market diesel engine, currently languishing in a seemingly endless hell of regulatory approval. More bizarre: Mazda is a tiny automaker facing real existential headwinds, and gasoline compression ignition is a massive challenge. GM and Hyundai announced compression ignition, or HCCI, projects (full name, homogeneous charge compression ignition) to great fanfare, but they never amounted to a production hill of beans, crippled by reliability issues or horrible vibrations. Worse, they only worked at an unusably narrow range — low RPMs and low loads. HCCI research improved direct-injection gas and diesel engine technologies for these companies, but HCCI itself remains untamed. The benefits of lean combustion Why even try to tame HCCI? The answer is much better fuel economy and lower emissions. Less burned carbon-based fuel, less carbon dioxide released. That's simple. But there are some thermodynamic reasons for the lean combustion you can achieve with compression ignition that are worth explaining. The ideal amount of fuel for a conventional engine to burn is about a 14:1 air-to-fuel ratio. That lets every molecule burn nicely, in theory.

2016 Mazda2 gets EPA-rated 43 mpg highway

To paraphrase the famous quote from astronaut Neil Armstrong, that's one small step for man and one giant leap for the Mazda2. The Environmental Protection Agency (EPA) has weighed in on the new Mazda2 version, and says it gets a fuel-economy rating of 33 miles per gallon city and 43 mpg highway with a six-speed automatic transmission. Stick-shift gas-mileage figures are 31 city and 42 highway, which are still substantially better than the 29/35 rating from the most recent iteration of the model. That's about a 15-percent jump in fuel economy, people. More importantly, the Mazda2 beats out competitors such as the Hyundai Accent, Kia Rio Eco and even the Honda Fit in terms of fuel efficiency, which is pretty good company. The Mazda2 boasts a 1.5-liter four-cylinder engine. But it is the upgrade to six-speed transmissions in both manual and automatic versions that seem to be making the biggest difference in the ratings. Mazda started unveiling details about the next-generation Mazda2 last year, and last fall began production of the model at Mazda's new factory in Salamanca, Mexico. At that time, the Japanese automaker had already sold more than 2.4 million Mazda2 vehicles since the model's introduction in 1996. Related Video: