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The 3.0 sucks a lot of gas while only producing about 150hp. They're not as reliable as other toyota engines and they're a mess under the hood if you do have to work on them. If you rate an engine on reliability, power, and fuel economy, the 3.0 fails all three categories. The 2.7l 4cyl that toyota used later did everything the 3.0 was supposed to, and did it better. It makes the same power with about 25% better mpg and very few problems.