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236 Posts
Mine had the small (4.7L) V-8 which was low on the power end, under 200 HP if I remember correctly, but it liked the gas. It would get around 18 to 19 mpg on the highway if I was lucky. The Enclave has over 300 HP and gets close to 10 more mpg on the highway. I'm sure a new V-6 Grand Cherokee has similar power and mpg or at least a lot closer than the one I had.