2007 Mazda Cx-7 Touring on 2040-cars

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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.

Marchionne now considering 'Plan B' partners for FCA merger

Okay Sergio, just stop. With the sting of rejection from General Motors CEO Mary Barra still fresh, Fiat Chrysler Automobiles CEO Sergio Marchionne is moving on and trying to find another automaker to merge with. FCA may not be giving up hope on a merger with GM, but that doesn't mean it isn't at least considering alternatives. Sergio's so-called "Plan Bs" include the Volkswagen Group, as well as smaller Asian outfits, like Mazda, Honda, Suzuki, and Hyundai. Bloomberg reports that France's beleaguered PSA Peugeot Citroen could as a sort of "fallback" option due to its relative lack of volume, an unidentified source claimed. There are, of course, problems with each option. According to Bloomberg, Volkswagen expects complete control of a company, but the Agnelli family, which holds a large portion of FCA stock, is loathe to relinquish its stake in the company. On top of that, VAG just isn't looking to make a deal right now. Mazda, meanwhile, is enjoying a new partnership with Toyota and Suzuki is partially owned by VW. Honda and Hyundai have never expressed any interest in a partnership with a western automaker. That kind of just leaves the French then, but even that remains a long shot. As Bloomberg tells it, PSA boss Carlos Tavares is still working on a turn-around plan, and would want at least another six months to execute before even considering a deal with FCA. And even then, Tavares hasn't given any indication that he's considering a pairing. News Source: BloombergImage Credit: Paul Sancya / AP Chrysler Fiat GM Honda Hyundai Mazda Suzuki Citroen Peugeot Sergio Marchionne FCA Mary Barra psa peugeot citroen

2019 Mazda CX-5 fuel economy takes a hit with new turbocharged engine

We learned all about the 2019 Mazda CX-5 last week, and now we've discovered fuel economy for its new 2.5-liter turbocharged engine. Unsurprisingly, it gets slightly worse fuel economy than its naturally aspirated counterpart. The 2019 turbo crossover, which only comes in all-wheel drive form, gets 22 mpg city and 27 mpg on the highway. Front-wheel drive CX-5s with the naturally aspirated 2.5 liter net you 25 mpg city and 31 mpg highway — all-wheel drive drops 1 mpg in both categories. For a little comparison, the turbocharged engine makes 250 horsepower and 310 pound-feet of torque on 93 octane gasoline, while the non-boosted engine makes 187 horsepower and 186 pound-feet of torque. You're definitely taking a hit in fuel economy, but the gain in power might be worth it, since the decrease isn't that terrible. Cars in its price and power range with all-wheel drive have comparable fuel economy. The Ford Escape with the 2.0-liter turbo is rated at 20/27; Chevrolet's Equinox with the 2.0-liter turbo is 22/28 and the VW Tiguan gets 21/29. There isn't really a clear winner in fuel economy for this much power when you look around the segment, but Mazda's engine is half a liter larger than everyone else. This translates to better torque than most of its competitors, but Mazda manages similar fuel economy. Also similar to many of these decked-out compact crossovers is the new high price of the Mazda we wrote about before. You won't be getting in to the turbocharged CX-5 for any less than $35,865. If you wanted a bigger Mazda like the CX-9, its fuel economy figures aren't significantly worse than the CX-5. Front-wheel drive versions are rated 22/28, and it drops 2 mpg in each category for all-wheel drive. The updated 2019 CX-5 should be coming to dealers soon. Related video: Featured Gallery 2019 Mazda CX-5 View 9 Photos Green Mazda Fuel Efficiency Crossover SUV mazda cx-5