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4th-gen Toyota Prius production delayed by 6 months

If you were holding off buying a new car in anticipation of the fourth-generation Toyota Prius arriving in 2015, your wait might be a little longer. Company insiders are claiming that production of the bestselling hybrid is being pushed back from spring to possibly as late as December 2015. Toyota is reportedly still making alterations to make sure everything is just right before it unleashes the all-important, efficient hatch on a waiting public.
According to unnamed sources speaking to Automotive News Europe, the main reasons for the delay aren't completely known. It's believed the engineers are still working on making the hybrid powertrain more efficient and improving the new Toyota Global Architecture modular platform. The insiders claim that the final production prototype of the Prius is still under development, and it might be November before it's finalized. From there, it usually takes around 12 months to tool up and for the first car to roll off the assembly line. It would be another year after that before the plug-in variant starts assembly. The national manager of Toyota Product Communications, Michael Kroll, told AutoblogGreen, "As you might expect, we can't comment on future product plans."
Despite the delay, some potential details have already emerged about the new hybrid. A company spokesperson recently told Autoblog via email that Toyota is engineering the next-gen Prius to have smaller, more power-dense electric motors and greater thermal efficiency. The new modular platform is also rumored reduce weight, and the changes could lead to a targeted 10 percent improvement in fuel economy.

Submit your questions for Autoblog Podcast #317 LIVE!

We record Autoblog Podcast #317 tonight, and you can drop us your questions and comments regarding the rest of the week's news via our Q&A module below. Subscribe to the Autoblog Podcast in iTunes if you haven't already done so, and if you want to take it all in live, tune in to our UStream (audio only) channel at 10:00 PM Eastern tonight.
Discussion Topics for Autoblog Podcast Episode #317
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Toyota unveils two new small displacement engines

Toyota introduced a pair of brand-new engines in Japan today, that it says will eventually spawn 14 different variants by 2015. Where these two engines stand out in today's world, is that neither mill boasts direct injection, and both are naturally aspirated.
The larger of the two is a 1.3-liter, while the smaller engine, a 1.0-liter, was developed in collaboration with Daihatsu. What makes these two unique is that they both use the Atkinson cycle. Now, we aren't going to bore you by explaining just what this is - there's Google for that. Suffice it to say, Atkinson engines are highly efficient, but that efficiency comes by sacrificing power. That's why they're so popular in hybrids, which can offset the power losses.
This focus on fuel efficiency extends throughout the new engines, which also benefit from tweaks like a cooled exhaust gas recirculation system and a trick intake port, while the 1.3 employs Toyota's iE variant of variable valve timing. Both engines can be fitted with stop-start tech. According to Toyota, when fitted with stop-start the 1.3 should provide around a 15-percent bump while the 1.0-liter will increase economy around 30 percent, when they arrive on the road.