2024 Mazda Cx-50 Premium 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.

Mazda CX-5 diesels get discounts up to $10,000 off MSRP

When Mazda positioned its long-awaited and oft-delayed CX-5 diesel crossover as the “premium” option in the CX-5 trim structure, we were skeptical. After driving one last fall with a $42,045 sticker price, our eyebrows furrowed even deeper. Today, to nobodyÂ’s surprise, Mazda dealers are slapping massive discounts on the Skyactiv-D. CarsDirect initially reported on the discounts, pointing out that some dealers are slashing prices by $10,000. We took a spin through Autotrader to see what was out there, and the results were shocking. There were pages of CX-5 diesels with prices in the low-to-mid $30,000 range. We asked Mazda what kind of incentives it was currently offering on the 2019 CX-5 diesel. Since December, Mazda has offered a $5,000 cash rebate, alongside a 2.9 percent APR for 60 months. However, the other several thousand dollars worth of discounts weÂ’re seeing listed — as much as $5,000 more — are not being accounted for by Mazda.  Just as CarsDirect found, the largest discounts we could find on the web are for a cool $10,000, bringing the price down to $32,045. At that price, youÂ’re looking at a 23.8 percent discount. ThatÂ’s a discount of nearly a quarter(!) of the carÂ’s original asking price. We thought the Skyactiv-D was overpriced originally, but at this price, weÂ’d strongly consider it as the CX-5 to buy. Since the diesel is only offered in the top-of-the-line Signature trim, it has every gizmo and gadget Mazda offers in addition to the most premium interior materials. ItÂ’s also offered in all-wheel drive only, leaving every box with a checkmark in it.  Compared to the gas-engined CX-5 Signature that starts at $38,100 for the 2020 model year, these diesels are a steal. In fact, this price hierarchy makes a lot more sense than the way Mazda had it organized in the first place. The more powerful 2.5-liter turbocharged four-cylinder in the gas-engined Signature can easily be marketed as the most “premium” option in the CX-5 lineup since itÂ’s the fastest and most enjoyable to drive. Moving the slower diesel with the same equipment below it on the food chain sounds like the right move to us. At around $33,000-$35,000, the diesel isnÂ’t such a bad buy anymore. Fuel economy still isnÂ’t where weÂ’d like it to be, but as we opined in our First Drive review, itÂ’s still a wonderfully pleasant car to drive. Related Video:    

Mazda, Suzuki, Yamaha — more vehicle data fabrication found in Japan

TOKYO — Mazda, Suzuki and Yamaha improperly tested vehicles for fuel economy and emissions, the Japanese government said on Thursday, revealing fresh cases of compliance failures by manufacturers. The results came to light after the Japanese government had ordered the automakers to check their operations after revelations of improper testing at Subaru and Nissan last year. The conduct of automakers globally has come under intense scrutiny after Germany's Volkswagen AG admitted in 2015 to installing secret software in hundreds of thousands of U.S. diesel cars to cheat exhaust emissions tests, and that as many as 11 million vehicles could have similar software installed worldwide. In the Japanese cases, the carmakers have not broken any laws or prompted massive recalls. But a growing list of improprieties has tarnished the image of the country's manufacturing industry for high-quality products and efficiency. Suzuki, Mazda and Yamaha cleared vehicles for emissions or fuel efficiency even in cases where they were tested under invalid conditions, the ministry said in a statement. The errors related to slight deviations in the speed of the vehicles during testing that should have invalidated the test results. The automakers examined tests they had conducted over different periods of time, and in Suzuki's case they stretched back to 2012. None of the automakers found significant problems with actual emissions and fuel economy performance of the vehicles, which were destined for sale in Japan, and do not plan any recalls. Suzuki, Japan's fourth-largest automaker, said that of 12,819 sample vehicles tested for fuel economy and emissions since June 2012, around 50 percent of them had been inspected improperly. "I deeply apologize and will lead efforts to prevent recurrence," Suzuki Chief Executive Toshihiro Suzuki told a news conference. Mazda said there were irregularities in 4 percent of similar inspections on its cars, or just over 70 vehicles. In Yamaha's case, irregularities were found in 2 percent of inspections, or just a handful of vehicles. Both Mazda and Yamaha apologized. Suzuki and Yamaha shares fell 6 and 5 percent, respectively, and Mazda shares were down 1 percent, underperforming a steady benchmark Nikkei average. In July this year, Nissan admitted it had improperly measured exhaust emissions and fuel economy for 19 vehicle models sold in Japan.