About the I6 vs. V8 discussion - JeepForum.com
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Unread 05-29-2007, 01:48 PM   #1
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About the I6 vs. V8 discussion

I wasn't looking for which engine's better all around becuase I know it has been discussed A LOT of times, all I wanted to know was how big the fuel economy difference is between the I6 and the V8.

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Unread 05-29-2007, 01:53 PM   #2
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Dude theres about 4million posts about that...

The I6 does about 2mpg better on average than the V8.

03 WJ 4.7 242HD Kolak/IRO 5" Clayton LA's
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Unread 05-29-2007, 02:08 PM   #3
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Mostly depends on how it's driven! If it's slowly, then I gets better mpg. But when you start to drive really aggressively, V8 will get better MPG with the same driving style, since it won't be working on high revs. It's really simple.
And there is no definite answer like "I6 will get 1,523 MPG difference with 38% of city driving..." It even depends on air temperature, height above sea level. Many, many factors!

Anyway, nothing will beat Suzuki :D
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Unread 05-29-2007, 02:14 PM   #4
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Exactly. There is no "definitive" answer to the question.

The bottom line is if you have real concerns over a possible 2 or 3 mpg difference, you probably should be scratching the Jeep off of your list of vehicles to buy...
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Unread 05-29-2007, 02:17 PM   #5
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Its a freakin Jeep, mpg is going to suck no matter which engine you get.
95 zj with some big n heavy crap!
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Unread 05-29-2007, 02:18 PM   #6
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Stock they are nearly identical. Lift it and throw bigger tires on there and the V8 will generally do better because it doesn't have to work as hard as the poor tiny I6.

No more V8/I6 threads
'04 WJ, 6" Clayton LA's, 242 SYE, 35" BFG MT KM2's, 4.56 gears, & D44a locked
'14 WK2 Limited w/5.7L, ORAI, & Tow Package
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