Mazda Rx7 on 2040-cars

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Carmakers, NHTSA to unveil auto-emergency braking agreement tomorrow

Happy St. Patrick's Day Eve. Tomorrow, there will be green beer, corned beef and cabbage, and automatic emergency braking for all. Weird combo, we know. But on St. Patty's we can expect an official announcement from a pact of automakers making auto-braking systems standard equipment by 2022. That's per a report from Reuters, which cites three sources familiar with the plans. Originally announced in September 2015 by 10 automakers and the National Highway Traffic Safety Administration, the agreement is expected to be even larger when the details are unveiled tomorrow. According to Reuters, the manufacturers of 99 percent of the US domestic market's vehicles will be represented by the new agreement. It's believed that standard AEB systems could prevent thousands of accidents across the country. Expect more on the official announcement when it's made. Related Video:

Super-rare Mazda MX-5 Miata coupe pops up for sale

It's somehow fascinating that one of the most interesting developments of Mazda's MX-5 Miata roadster is the one that isn't a roadster at all. Unlike the NC and ND generations with retractable power hardtops, the second-generation NB Miata got a special coupe version with a fixed roof, done in the style of the first-generation coupe concept. We're talking very limited production numbers: just 179 of these NB coupes were made, and they were all Japanese-market models, so it's not often that one comes up for sale. Except now. Itself even more of a limited-edition car, this sportier Type S version residing in Hong Kong and advertised on Pistonheads is one of just 63 made. It's right-hand-drive, as both its Japanese market origins and Hong Kong regulations dictate, and out of the available engine variations it comes with the 1840cc unit and a six-speed manual gearbox. What's more, despite its low 30,000 miles, the 2004 fixed-roof Miata is said to be fully overhauled and restored to as-new condition. We can't imagine those coupe-specific parts such as glass and trim are easy to source, so with these extremely rare cars it's probably best to go with the best condition example you can find, if you can find one to begin with. Rust hits all old Miatas at some point. With that backdrop, the GBP30,000 ($38,700) asking price doesn't seem all that unreasonable. With the Miata's enormous enthusiast base, there are now aftermarket solutions that imitate the flowing lines of the rare factory coupe, but they do lack the strengthening that Mazda's specialty skunkworks shop put in these — and the body-stiffening roof adds a mere 22 pounds to the car's dainty overall weight. For some lucky Miata hobbyist, this particular red coupe might be the crown jewel of their roadster collection. Related Video:

Mazda hard at work on Skyactiv 2 engine technology

As Mazda continues the current rollout of its still-new Skyactiv technology, the automaker is already looking at improving its family of engines for even better fuel economy and emissions reductions. Automotive News reports that with stricter fuel economy and emissions regulations planned for 2020 and 2025 in Europe, Mazda will likely release engines with next-generation Skyactiv 2 technology by the end of this decade, and Skyactiv 3 units just five years later.
The latter is expected to focus on improved engine cooling and lessening energy losses, but the big news in AN's report is that the next-gen Skyactiv 2 engines will use Homogeneous Charge Compression Ignition, or HCCI. This type of ignition is very similar to how a diesel engine operates (with high compression and using the compression stroke for fuel combustion rather than spark plugs), a method said to provide a cleaner and more efficient fuel burn - to the tune of a 30-percent improvement in fuel economy compared to current Skyactiv engines. Other automakers, including Hyundai, have already announced they are developing HCCI powerplants with similar technology and characteristics, so Mazda likely won't be a lone wolf here.
Equipped with HCCI technology, Mazda figures to be able to compete with larger automakers in terms of fuel economy and emissions without resorting to hybrid powertrains, continuously variable transmissions or automatics relying on more forward gears (eight or more) for optimal efficiency. Some of the challenges of HCCI, according to AN, include the need for better engine cooling, risk of misfire at high and low rpm and uneven engine performance based on fuel properties.