This article is from the Chrysler-Plymouth-Dodge FAQ, by Dr. David Zatz with numerous contributions by others.
Just after Chrysler phased out the last Mitsubishi engine,
Daimler announced that Chrysler would phase out all
Chrysler four cylinders in favor of jointly designed fours.
A joint small V6 is rumored now as well. The new engine is
said to be quite a powerhouse, but it's not a Hyundai or
Mitsubishi engine, it's a true joint venture.
As far as the next-generation Neons and Stratuses, they are
also being jointly developed - we understand Chrylser is actually
in the lead on both, though they are using newer Mitsubishi basic
platforms to save money.
You can read about Mitsubishi's current efforts at