5 Speed Clean Fax Low Miles Warranty Black on 2040-cars

Auto blog

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.

Mitsuoka Rock Star is a Miata in a Chevy Corvette Sting Ray disguise

Mitsuoka is a famous (infamous?) Japanese custom car builder known for its absurd, and occasionally out-of-this-world vehicles. Its most iconic vehicle was the mid-engine Orochi, but its bread and butter are normal Japanese cars given front and rear styling from the past, usually sometime between the 1930s and 1950s. One of the more recent examples is the Mitsuoka Himiko, a Mazda Miata given a classic European roadster look. But the company has ventured a little further ahead in history with its latest model, the Mitsuoka Rock Star, which quite clearly is meant to be a C2 Chevy Corvette Sting Ray. The effect is actually pretty convincing, and as far as Mitusokas go, it looks smartly proportioned and a good fit for the base car. That base car is the current Mazda Miata, known as Roadster in Japan. It probably helps that the base Miata was designed with exaggerated fenders and creases from the get-go, so the even more exaggerated lines of the Corvette fit surprisingly well. Outside of the body, the car is pretty much identical to a regular Miata. It uses the same naturally aspirated 1.5-liter four-cylinder as all overseas examples. That means it makes just 129 horsepower and 111 pound-feet of torque, so this doesn't even come close to the fire-breathing power of real C2 Corvettes. Of course, that could be rectified with an LS V8 swap from Flyin' Miata. The engine is coupled to either a six-speed manual transmission or an automatic. The manual can also be had with a limited-slip differential. There are a number of available upgrades including custom colors for the body and the windshield surround. You can also add a custom leather interior with body-color coordinated panels. Mitsuoka will even provide retro-style wheels with white-letter BF Goodrich tires for the complete look. If you live in Japan and find this vehicle appealing, you'd better be ready to shell out plenty of cash. At current exchange rates, the base Rock Star starts at $41,636. The price goes up from there with options. In contrast, a base Mazda Miata here in the U.S. starts at $26,625, a little more than half that of the Mitsuoka. And of course, the U.S.-spec Miata is substantially more powerful. If you want the Mitsuoka, you'll also have to get in touch with the company quickly. There will only be 50 examples, and you have to apply for one. Related Video: News Source: MitsuokaImage Credit: Mitsuoka Mazda Convertible Performance mitsuoka

100k Mazda6 sedans recalled over tire-monitoring systems

A tire pressure monitoring system (TPMS) is, as you might have guessed, designed to monitor the air pressure in the tires, and alert the driver if pressure drops. But a problem found in the Mazda6 could keep the system from doing its job. According to the recall notice issued by the National Highway Traffic Safety Administration, the TPMS in the Mazda6 might not recognize a loss in tire pressure if all the tires slowly deflate at the same time. Under-inflated tires, it goes without saying, could increase the risk of a crash. As a result, Mazda is recalling 99,711 examples of the 2014-2015 Mazda6 to have the system's software updated. RECALL Subject : Tire Pressure Monitoring System/FMVSS 138 Report Receipt Date: OCT 27, 2014 NHTSA Campaign Number: 14V675000 Component(s): TIRES Potential Number of Units Affected: 99,711 Manufacturer: Mazda North American Operations SUMMARY: Mazda North American Operations (Mazda) is recalling certain model year 2014-2015 Mazda6 vehicles manufactured October 25, 2012, to October 10, 2014. If the pressures of four of the tires on an affected vehicle gradually drop at the same time, the tire pressure monitoring system (TPMS) may not warn the driver of the drop in pressure. As such, these vehicles fail to comply with the requirements of the Federal Motor Vehicle Safety Standard (FMVSS) No. 138, "Tire Pressure Monitoring System." CONSEQUENCE: A vehicle that is driven with under inflated tires may experience a sudden tire failure, increasing the risk of a crash. REMEDY: Mazda will notify owners, and dealers will update the TPMS software, free of charge. The recall is expected to begin on December 10, 2014. Owners may contact Mazda customer service at 1-800-222-5500. NOTES: Owners may also contact the National Highway Traffic Safety Administration Vehicle Safety Hotline at 1-888-327-4236 (TTY 1-800-424-9153), or go to www.safercar.gov.