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Toyota, Honda, Nissan and more collaborating to increase fuel efficiency

Toyota, Honda, Mazda, Nissan, Subaru, Mitsubishi, Suzuki and Daihatsu have announced an alliance that will see a push to improve fuel economy from both gas-powered and diesel-powered engines by as much as 30 percent before the end of the decade.
The newly assembled Research Association of Automotive Internal Combustion Engines put the roughly $20-million project together, with the Japanese government committing to half the cost while the eight manufacturers will chip in the rest.
According to Automotive News, the automakers will team up and share basic research on internal-combustion engines in a bid to cut costs. Eventually, the results of the research will find its way into a production vehicle, although it's unclear just when we'll see the fruits of this partnership on the road.

Mazda CEO says rotary not viable, so don't look for a new one

We have some very sad news to report, rotor-heads fans: Don't expect a new rotary-powered vehicle anytime soon. This comes straight from Masamichi Kogai, the CEO of Mazda, which is the only company to ever market a commercially successful rotary-powered automobile in the world. The issue, as it has pretty much always been, is environmental.
While the Wankel rotary engine does indeed make a lot of power in a small, lightweight package, it does so while burning lots of fuel and emitting lots of noxious gases into the atmosphere, at least when running on gasoline. And that means the rotary engine will likely only ever be able to power niche vehicles. And that, in turn, means that it is very difficult to turn a profit on vehicles with rotary engines, particularly for a small automaker like Mazda.
"It has to be a viable commercial proposition. If we are going to adopt it, it has to be a product that can generate at least sales of 100,000 units a year. We have to be able to achieve a profit," said Kogai in an interview with Automotive News. Mazda sold 56,203 RX-7 models in the United States (the automaker's biggest market) in 1986. Sales of the RX-8 peaked in 2004, its first full year on the market, with just 23,690 units.

Mazda CX-5 diesel gets EPA fuel economy ratings

Mazda has been promising that it will bring the Skyactiv-D diesel engine to the United States pretty much since the last Mazda6 redesign for the 2014 model year. And even in the wake of delay after delay, the company has insisted it will happen. Well, it looks like we may not be far from the fulfillment of this promise, since the EPA and DOT's FuelEconomy.gov website now has numbers for the diesel-powered Mazda CX-5. What's surprising, besides the existence of hard numbers, is that those numbers aren't actually that big of an improvement over the gas engine. In fact, highway numbers are the same as the gasoline versions. The front-drive CX-5 diesel gets 31 mpg on the highway, and the all-wheel-drive one gets 30 on the highway. The diesel does see improvements in the city. The front-drive model gets 28 mpg versus 25 for the gas equivalent. The all-wheel-drive model gets 27 mpg rather than 24 for the gasoline version. Also concerning is the fact that the CX-5 diesel isn't the only diesel in the segment. The Chevy Equinox is available with a diesel, too, and while city mpg is about the same, it can hit 38 mpg with all-wheel-drive and 39 with front-drive on the highway. With this in mind, Mazda will probably market the engine as more of a performance upgrade, and maybe something with a bit of extra towing capacity. This is because the engine is expected to make a bit over 170 horsepower and 310 pound-feet of torque. The power number is a smidge below that of the 187 from the 2.5-liter naturally aspirated gas engine, but the torque number is much higher than the gas engine's 186 pound-feet. We've also reached out to Mazda for comment on this development. A representative offered no further comment beyond the company staying committed to diesels. Related Video: