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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.

Midsize Sedan Comparison | Honda Accord vs. Toyota Camry vs. Mazda6

The rumors of the midsize sedan's death have been greatly exaggerated. The 2018 Honda Accord and 2018 Toyota Camry together moved more than 262,000 units through May of this year, which is still a ton of cars. Then again, both are down year-over-year despite being completely, and quite impressively, redesigned for 2018. So yes, the midsize sedan's grip on family transportation is weakening. Ford certainly thinks so, yet this change in consumer preferences comes at a time when the current crop of sedans is sensational. They're bigger and more powerful, yet also more efficient. Safety scores are impeccable. They even look better than ever. So before running out to score one of the bajillion little SUVs flooding the market, why not ponder this trio of midsize sedan all-stars that might actually work better? Over the course of three consecutive weeks we tested the 2018 Camry XSE V6, 2018 Accord Touring 2.0T and the perennial critical-darling 2018 Mazda6 Signature. The latter was thoroughly overhauled and, perhaps as such, bucked the segment trend by actually selling more in June this year. Each was a range-topping trim level with all the bells and whistles, plus the most powerful engine available. Really, you couldn't find cars closer in power, price and feature content. View 57 Photos Performance and fuel economy Toyota bucked the turbocharged trend by sticking with naturally aspirated engines for the 2018 Camry, and when it comes to its 3.5-liter V6, it's sure hard to argue with that decision. For starters, it produces 301 horsepower. Let that sink in for a moment. A 301-hp Toyota Camry. That crushes the others, while its 267 pound-feet of torque is only 6 less than the Accord. This is a strong, smooth engine that only gets better when you realize it matches the 26-mpg combined fuel economy of the others. Honda, meanwhile, followed the masses by switching to a turbocharged four-cylinder for the Accord's engine upgrade (and its base engine, for that matter). Though its 252 hp is considerably down on the Camry and its 271 lb-ft is only a smidgen more, the Accord's torque arrives earlier in the rev range without feeling overtly turbocharged. It also has 143 fewer pounds to contend with. When wrung out, this new 2.0-liter belts out a beautiful, typically Honda song made possible by the smart 10-speed automatic (the base 1.5-liter is paired to a CVT that results in more drone than mechanical music) that thankfully doesn't draw much attention to itself.

Acura NSX GT3 racecar bares all in raw carbon

Acura slowly and dramatically revealed the NSX over a period of years. There were previews, concepts, and lots of teases before Acura finally showed us the whole thing. It's a different story for the racecar. And today, the wraps come off the FIA GT3-spec NSX to show all of its bare-carbon glory. The NSX GT3 strips away more than just the paint from the standard road car. The racecar comes sans hybrid system, meaning all the power from the twin-turbocharged 3.5-liter V6 is sent solely to the rear wheels. Modifications to the body include a large rear wing, underbody diffuser, and bigger hood vents for engine cooling. While the hybrid system may be gone, the NSX GT3 uses the same block, heads, valvetrain, crankshaft, pistons, and dry sump lubrication system as the road car. Power is sent through a six-speed sequential gearbox instead of the road car's nine-speed. The NSX GT3 will be built alongside the street version in Ohio. Honda engineers in Japan and North America shared in the development. Final GT3 homologation will be completed by the company's Honda Performance Division in Santa Clarita, CA. Related video: