The “World Engines” (later altered to “World Gas Engines,” or “WGE”) replaced Chrysler’s 1994-debut 2.0 / 2.4 liter four cylinder engine family, starting in 2006.
The WGE had a Mercedes-derived dual variable valve timing (the “Neon engines” had no variable valve timing) and a flow-control valve intake manifold; the blocks were designed jointly by Chrysler, Mitsubishi, and Hyundai, and were used by all three, with different heads, fuel delivery, and other systems. Reviewers generally praised the Hyundai version, and put the Chrysler version last of the three, calling it rough, peaky, and noisy. It was, though, reportedly cheaper to build than the prior engines, and had much higher peak power ratings.