I had the 3.5 in my old Intrepid and it averaged @ 17mpg.
Fiancee wrecked it twice on liability-only insurance. Sitting wrecked in my yard. I doubt i will fix it.
A had a 3.5 in my old intrepid, too. I did some fairly substantial mods, and ended up getting the occasional good run with a 4.6 mustang. That was its crowning achievement, besides ridiculously powerful A/c.
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