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2018 Mazda CX-5 is the only IIHS Top Safety Pick Plus compact crossover

We've highlighted a number of vehicles tested by the IIHS, and specifically ones that come up just a little short of being lauded with the organization's highest safety rating of Top Safety Pick+. The reason most of these vehicles fall short is sub-par headlights. But this time we have a different story. The 2018 Mazda CX-5 actually snagged the coveted award, and impressively, it's the only small crossover SUV the organization has tested to earn it. The reason of course hinges on headlight performance. In order for a vehicle to get the award, it has to have headlights available that score a "Good" rating, in addition to having stellar crash tests. The award for good lighting and the Top Safety Pick+ only goes to the CX-5 with the optional adaptive lighting system available on all trims (optional on the base Sport). The standard headlights on the Sport model earned the second-highest rating of "Acceptable." The CX-5 also earned a "Good" rating in every crash test, including both small-overlap tests. It earned 5 out of 6 points in forward collision prevention, netting a "Superior" rating. There are many safe options in the small SUV category besides the CX-5, though. The Honda CR-V, Hyundai Tucson, Kia Sportage, Mazda's own CX-3, and Mitsubishi Outlander match the CX-5's straight-"Good" crash test ratings. They all also pick up an additional forward collision point in the collision warning category. The best headlights any of them can offer, though, are just "Acceptable," and the standard headlights can be even worse with "Marginal" or "Poor" ratings. Related Video: Featured Gallery 2017 Mazda CX-5: First Drive View 25 Photos News Source: IIHS, MazdaImage Credit: Mazda Mazda Safety Crossover SUV consumer mazda cx-5

Mazda Skyactiv-X Review | The revolution begins with a squeeze-bang

The matte black Skyactiv-X prototype looks like a rough Mazda3, perhaps reconstructed after a bad wreck by an over-enthusiastic owner of a spot welder and lots of gaffers' tape. Ribbed ducts poke out of the dash sending two breaths of conditioned air to no one in particular. Even its revolutionary engine, the thing we're here to experience, is entombed in a massive, nondescript cover to mask its unseemly noises. It's a wild, strange way to meet a very unconventional vehicle that promises diesel-like fuel economy, a wide torque band, and an exotic method for burning less gas than ever before. It takes a few hours for Mazda's engineers to explain the fundamental principles of operation. For more detail, read our Skyactiv-X Spark Controlled Compression Ignition explainer, but here's a very brief overview. Skyactiv-X marries some traditional gasoline engine characteristics with a novel form of compression ignition called SPCCI. The key for Skyactiv-X is to use very high compression in the cylinder and an extremely lean fuel-air mixture. Squeezed right to the cusp of getting hot enough to blow up all on its own (which is very hard to predict), a squirt of extra gas and a spark interject to cross that compression-ignition threshold in a controlled and predictable manner. See the animation below: That takes a few essential components to get just right. One is a massive amount of computer processing power and some pressure sensors in the individual cylinders, because the ambient conditions change how and when these things happen. Skyactiv-X uses a clutched supercharger to pump in additional air when needed to nail the mixture precisely, and high-pressure injectors to get the low ratios of fuel to disperse properly in the chamber. And since it operates like a conventional gasoline engine sometimes, it uses valve timing to lower the very high compression ratio so it doesn't reach combustion ignition in that mode. In practice, the Skyactiv-X runs in compression ignition mode most of the time. In practical terms, that means it drives like a torquey gasoline Skyactiv engine. The torque curve is broad and flat — diesel-like in that respect. That also means it can get away with using a six-speed transmission and a lower final drive for better response. There's enough grunt and economy together that Mazda can let the engine spin faster — at 60 mph, it's running at roughly 1,000 more RPM than a similar gas engine, with greater efficiency.

Mazda planning more powerful MX-5?

The new Mazda MX-5 will be available with a 1.5-liter four with 129 horsepower or 2.0-liter with 155. And while either engine may seem a tad on the small side for a sports car, they keep perfectly in line with what the Miata is all about. That doesn't mean, however, that more powerful options aren't under consideration. Speaking with Motoring.com.au at the launch of the new MX-5, Mazda's global PR chief Kudo Hidetoshi revealed that two options are under consideration. One would be a larger engine, and the other a turbocharged version of the existing 2.0. The former option would deliver the extra punch while keeping things naturally aspirated and free from turbo lag, but could throw off the weight balance Mazda has worked so hard to preserve. The more likely option, then, would be the turbocharged route that would allow the Zoom-Zoom brand to keep the roadster light and nimble, while still delivering an extra boost. Neither would be without its challenges, but if overcome, the resulting high-performance model could be sold as a Mazdaspeed model in some markets and as an MPS version in others. And, even if such a performance roadster were to get the go-ahead for production in some markets, there's no guarantee that it will be sold in the United States. Here's hoping. Related Video: