2022 Mazda Mx-5 Miata on 2040-cars

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Mazda6 diesel engine delayed over low performance, still coming

Oh Mazda... we had many hopes for the promised diesel four-cylinder in the Mazda6, but those have remained largely unfulfilled, as the oil-burning powerplant has failed to appear on dealer lots following its 2012 LA Auto Show announcement. Despite engineering issues that forced the company to announce that the program was delayed back in September 2013, Mazda remains adamant that the 2.2-liter Skyactiv-D is still coming to our shores. "We're still very much committed to diesel," Mazda's North American CEO, Jim O'Sullivan, told Automotive News. "We are still working on getting the performance aspects up to where we want them, and we do have a plan – an engineering road map – to get it done." According to AN, Mazda's initial plan with the 2.2-liter diesel was to build an engine so clean it could get by without an aftertreatment system, which generally accounts for the price premium of diesel engines versus their gas counterparts. The new system has come with performance issues, though, necessitating the delays. "If [we were] a commodity brand and didn't care about that, it would be on the market right now," O'Sullivan told AN. "But I know the people were expecting something from us, expecting certain drive characteristics and performance, and I didn't want to disappoint them." While O'Sullivan's defense of the diesel Mazda is admirable, the exec stops short of giving us an indication of when the new engine will finally arrive.

This California rally is vintage Japanese car heaven

What's so good about the future? This is what I was thinking when some folks at Mazda invited me and a handful of other journalists to join them on the second-annual Touge California. It's a rally for classic Japanese cars that covers a huge chunk of Southern California's twistier roads, where fans get to test their beloved machines. Oh, and it attracts swarms of admirers with cameras. "It is not a race. It is a vintage touring rally," said Ben Hsu, editor in chief of Japanese Nostalgic Car, and one of the coordinators of the event. "In Japan, touge most definitely refers to racing, whether timed, in touge battles, or drifting antics. Touge California was created to give drivers of Japanese classics a taste, as close as possible, of the types of roads their cars were forged on." Touge California was created to give drivers of Japanese classics a taste, as close as possible, of the types of roads their cars were forged on. We started the day on a mundane stop-and-go freeway drive from Mazda's Irvine headquarters to Escondido, me riding shotgun with my journalist co-driver in a 2016 Miata. But Mazda also brought along three heritage products on this trip – a 1985 RX-7 GSL-SE, a 1978 GLC three-door hatchback, and a 1975 REPU (rotary engined pickup) – serving as reminders of the company's history in the U.S. The group of Mazdas was joined in Escondido by many more Mazdas. And Toyotas, Hondas, Datsuns – so many 240Zs – and the odd Subaru and Mitsubishi. In total, 28 cars were at the start line. "We doubled the field this year, and made the route longer – 200 versus 120 miles," Hsu said. "We separated the cars into two run groups based on speed and a mix of makes and models." I spent the first part of the rally in the Mazda pickup to get a taste of rotary power. It was my first experience behind the wheel of a Wankel-powered vehicle, my first time driving a small Japanese truck from the '70s, and my God that thing has a lot of power. I had a few scares when I had to stand on the brakes, and I found the shift throw's immense length disconcerting – it felt like third gear engaged somewhere in front of the dashboard, with fourth somewhere in the bed. The truck was a great introduction to the rotary, however, and to '70s Japanese cars. Especially in Southern California, old Japanese cars aren't as novel to casual observers as they might be in other parts of the country.

Mazda is developing gas and diesel inline-six engines

Once the favored engine configuration for luxury and high-performance cars, the inline-six suffered a bit when the transverse (east-west) engine configuration became popular during the shift to front-wheel drive cars. The packaging benefits are obvious – no driveshaft or transmission intruding on passenger space or rear differential on cargo volume, plus turning the engine 90 degrees meant the front of the car could be shorter. But the inline-six is slowly, slowly crawling out of near-obsolescence, notably in BMW, Jaguar-Land Rover and Mercedes-Benz products. Add Mazda to that mix: An investor report first spotted by Jalopnik and confirmed by Mazda reveals that the company is developing a Skyactiv-X and Skyactiv-D inline-six that will be installed longitudinally (north-south) in a new "Large Architecture" platform. Before reading any further, let's catch up on the Skyactiv-X and -D technologies. The former basically burns gasoline like diesel, providing some benefits and advantages of both types of combustion - here's an explainer on how that all works. We drove a prototype 2.0-liter Skyactiv-X 4-cylinder engine in a Mazda3 mule, too. And the Skyactiv-D series of engines is a comparatively typical turbodiesel. Mazda has a 2.2-liter turbodiesel inline-4 that has had a long and convoluted development and certification process, but is finally showing up in the 2019 CX-5. Since Mazda has implemented these technologies in existing four-cylinder engines, we would assume that the new Skyactiv engines will be "modular" – that is to say, they'll essentially be the existing engines with two extra cylinders, rather than an entirely new design. Jaguar-Land Rover is doing a similar thing with its Ingenium engine family. Assuming the Mazda engines will be modular would mean they'll be roughly 3.0-liter units, which is a common displacement for modern inline-sixes. And as we mentioned eariler, they'll be arranged longitudinally, unlike any other Mazda save the MX-5 Miata (and the long-departed rotaries), in a new vehicle architecture. As part of a medium-term plan over the next six years, Mazda will develop some unspecified vehicles on what it calls the "Large Architecture". These vehicles will have 48V mild hybrid and PHEV capabilities, and be able to use a version of Mazda's i-Activ AWD system. Why do this at all?