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Toyota to buck engine downsizing trend, may go larger and turbo-free

Turbocharging isn't really Toyota's specialty, and the Japanese automaker isn't being shy about acknowledging it. Koei Saga, a senior managing officer in charge of drivetrain research and development, says that eschewing turbos and increasing displacement of engines using the Atkinson cycle can produce better power gains without sacrificing fuel economy, Automotive News reports.
Toyota is investing heavily in larger-displacement Atkinson-cycle engines in addition to turbocharged engines, but Saga doesn't think the automaker will use turbocharging across many product lines. He apparently remains unconvinced that the technology "makes the world better."
In Toyota's eyes then, Atkinson cycle engines do make the world better, and here's how. Their pistons complete four processes - intake, compression, power and exhaust - in one revolution of the crankshaft, and the power stroke is longer than the compression stroke. Traditional Otto cycle engines require two crankshaft revolutions to accomplish those same four operations and have equal-length compression and power strokes. Atkinson cycle engines are more efficient, but less power dense, though increasing displacement can offset that shortfall.

Akio Toyoda pledges return to WRC in 2017 with a Yaris

There have been rumors of Toyota returning to the World Rally Championship since the end of 2013, and a Yaris prepped by Toyota Motorsport in Germany has been caught on The Continent several times last year in testing. Akio Toyoda visited Rally Finland while we were there with Hyundai to watch a race up close, and he said that the passion people still had for Toyota's past exploits encouraged him. He finally answered the question about when they planned to enter the series, announcing in Tokyo that they'd line up for the season in 2017. The Japanese company, a legend in rallying, got into the sport in 1979 and left in 1999 after winning seven titles in ten years through the nineties with Carlos Sainz and Juha Kankkunen. The 2017 return is likely due to the regulation changes that year to allow more power than the roughly 300-horsepower in today's challengers and the switch to a fuel-flow formula to let manufacturers use different kinds of engines. Toyota has been sitting in on the WRC rules meetings, and the final slate of changes will be announced at the end of this year. The Yaris that's been testing is powered by a 1.6-liter, four-cylinder that meets current regulations, but we can expect it to change somewhat before it's race-ready. TMG will test the car for the next two years, then it will go up against fellow manufacturers Volkswagen, Hyundai, and Citroen, as well as Fords run by M-Sport. There's video of the Yaris running solo through the Belgian countryside above, and a gallery of the coming car below.

Five automakers now being investigated by NHTSA for airbag woes

It appears that Toyota's renotification to owners of recalled vehicles from last year is just the tip of the iceberg for what could potentially be a much larger industry-wide recall. The National Highway Traffic Safety Administration is opening a preliminary evaluation investigation into roughly 1.1 million vehicles from Chrysler, Honda, Mazda, Nissan, Toyota and parts supplier Takata regarding faulty airbag inflators in several models.
NHTSA has received six reports - three directly, two from Takata and one from Toyota - of vehicles with ruptured airbag inflators from 2002-2006, which resulted in three injuries. So far, all six incidents have occurred in high humidity areas like Florida and Puerto Rico. According to Toyota's latest recall announcement, the inflators may have an improper propellant that could cause it to rupture in a crash and the bag to deploy abnormally.
This new investigation follows a previous recall from April 2013 of about 3.4 million vehicles worldwide for the airbag inflators from Takata. As Autoblog reported, Toyota jumpstarted the new situation when it found that the original list of serial numbers for the faulty part was incomplete and discovered more cars in need of replacement. Honda and Nissan told us that they were investigating whether further models would need called in again as well. Mazda told Autoblog: "Regarding the current Takata situation, we're working closely with NHTSA and investigating the situation, but nothing else to report at this time." Chrysler Group responded to us with the statement: "Chrysler Group engineers are conducting the appropriate analysis. The Company will cooperate fully with the National Highway Traffic Administration."