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Jeep Owners Real World MPG

22 messages,  Last post on Dec 01, 2008 at 4:32 AM

You are in the Jeep Cherokee and Jeep Grand Cherokee Forum. Your Hosts are steve_ & tidester

What is this discussion about? Jeep, Fuel Efficiency (MPG)

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#19 of 22 2008 4.7L Grand Cherokee - real world MPG, anyone? by cmdr17 Nov 16, 2008 (3:33 pm)
Jeep tweaked the 4.7L for the 2008 model year. The engine now boasts improved horsepower and a slight improvement in fuel economy. Is the latter true?   I would love to hear from anyone who has real world knowledge of the fuel economy and performance of this vehicle. I'm going to be buying a 4WD Limited. Replies to this message: bigray246 (Nov 28, 2008 4:59 am) steve_ (Nov 30, 2008 8:40 pm) bigray246 (Dec 01, 2008 4:32 am)
#20 of 22 Re: 2008 4.7L Grand Cherokee - real world MPG, anyone? [cmdr17] by bigray246 Nov 28, 2008 (4:59 am)
Replying to: cmdr17 (Nov 16, 2008 3:33 pm) Ok. I just purchased my 2008 Grand Cherokee Limited 4x4 loaded with the 4.7L. I live in NJ. My first trip from No.Jersey down to Atlantic City via the Garden State Parkway using the on board fuel MPG monitor showed 18.1 MPG. (not bad compared to my ex-H3). Now I have done 3 modifications to the truck. 1. Installed a KNN air filter to the OEM air system. 2. Installed a GT tuner box to the air sensor wires. 3. Had my local muffler shop remove the huge stock muffler and install a Cherry Bomb Turbo muffler. Total cost $300.00. Went back down to AC using the same route, & Mph. MPG monitor read 20.5 MPG! So for $300 I gained 2.4 more Mpg. I drive aprx: 10,000 miles a year $2.00 a gallon thats a cost savings of $150/year. I took the 72 month interest free loan so over the 7 years I will save approximately $1050.00 in fuel alone. Plus the new muffler has a nice powerful mellow tone! Replies to this message: steve_ (Nov 30, 2008 8:40 pm) bigray246 (Dec 01, 2008 4:32 am)
#21 of 22 Re: 2008 4.7L Grand Cherokee - real world MPG, anyone? [bigray246] by steve_ HOST Nov 30, 2008 (8:40 pm)
Replying to: bigray246 (Nov 28, 2008 4:59 am) All well and good, but I wouldn't trust that your mileage has settled in until at least 3,000 or 4,000 miles. My van really didn't hit its stride until 10,000 miles. So your baseline may not be as high as it could be - how many miles are on the JGC?   Congrats on the new ride! Replies to this message: bigray246 (Dec 01, 2008 4:32 am)
#22 of 22 Re: 2008 4.7L Grand Cherokee - real world MPG, anyone? [steve_] by bigray246 Dec 01, 2008 (4:32 am)
Replying to: steve_ (Nov 30, 2008 8:40 pm) Thank you. I really love this Jeep. I know exactly what you are saying but every little bit counts. I will keep you informed.

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