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Jeep Grand Cherokee Real World MPG

102 messages,  Last post on Jan 04, 2009 at 10:46 PM

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

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#6 of 102 Re: Jeep Grand Cherokee: Real World MPG [steve_] by podedwards Jun 19, 2006 (6:52 pm)
Replying to: steve_ (Jun 17, 2006 1:52 pm) I have a 2006 5.7 4WD Grand Cherokee. For the first 2,000 miles or so I averaged about (by computer and my own calculations)13.5 around town and averaged about 19+ in highway driving. I have about 6,000 now and I am averaging about 16+ in town and about 19+ on the highway. However, if I keep it on 65 I can easily average better than 21 on highway. I know it will improve a little more at about 10,000.   I use 5W-20 Mobil 1 fully synthetic oil. I keep 40-42 psi in tires and I don't gun it (well almost never).   I have a 2004 Mustang GT with a 4.6 v8. It easily gets 25-26 on he highway. On the other hand, if I want to make it rip and roar, I'll get about 10.   The Hemi is the same way. This engine has lots of power and it takes a lot of gas to tap it fully. Powerful v8's do not have to be pushed as hard (more gas) because of the ample torque.   I think driving easy is the key along with the right oil and tire pressure. Be sure you have at least 6,000 miles on it before you expect much.   But, no one buys a 5.7 4WD Jeep Grand Cherokee looking for gas mileage or at least I didn't. It still gets better, at its worst, than the Suburb. and Tahoe I had.
#7 of 102 Re: Jeep Grand Cherokee: Real World MPG [steve_] by bdmoore13 Jun 20, 2006 (10:07 am)
Replying to: steve_ (Jun 17, 2006 1:52 pm) 1996 Grand Cherokee V8. I get about 13.3 MPG, mostly city. I was only getting around 16 on the freeway, but with new plugs, wires, rotor, and cap, I am able to squeeze around 19-21 out of a gallon, as long as I keep my foot out of it (65-70 MPH). Replies to this message: podedwards (Jun 20, 2006 11:08 am)
#8 of 102 Re: Jeep Grand Cherokee: Real World MPG [bdmoore13] by podedwards Jun 20, 2006 (11:08 am)
Replying to: bdmoore13 (Jun 20, 2006 10:07 am) That sounds pretty good. The foreign models really don't get any better and some worse. A vehicle with a smaller engine will have to work harder to do the same job and will use as much or more gas.   I think 21 is good for a 4WD jeep.
#9 of 102 Re: Jeep Grand Cherokee: Real World MPG [steve_] by reholmes Jul 12, 2006 (5:35 pm)
Replying to: steve_ (Jun 17, 2006 1:52 pm) I get between 15 and 17mpg in mixed driving. I don't have an instantaneous readout on the computer like I had in all previous JGCLs, but on the level, no wind, 65mph, on cruise, I get 22-24 mpg reading after reset. Having said that, I'm a pretty conservative driver; although I did go off against a Nissan FX45 today and scalded his butt--hooah!   I'm using 5-20 full synthetic and changing every 3000 miles, and thus my question. Chrysler recommends every 6000 miles on synthetic for the SRT8, but I can't find a recommended oil change interval on the 5.7 GCL--anyone know? Replies to this message: podedwards (Jul 12, 2006 6:32 pm)
#10 of 102 Re: Jeep Grand Cherokee: Real World MPG [reholmes] by podedwards Jul 12, 2006 (6:32 pm)
Replying to: reholmes (Jul 12, 2006 5:35 pm) There is an A and B schedule for oil change in the manual. However,I am old fashioned and I change oil every three thousand miles -rain or shine. It may not be necessary, but the relative costs for the life time of the vehicle is minimal.   I use Mobil One 5-20 and I have used Mobil One in my others cars for years.   Just traveled to our home in Grand Lake, CO from our home in Hattiesburg, MS pulling a fully loaded U-Haul and the Grand Cherokee crammed full. The 5.7 got nearly 19 and pulled the mountains with no effort.   I am getting about 23-24+ on Interstate.   It is a great car.
#11 of 102 gas mileage by phoebe5 Jul 18, 2006 (8:20 am)
I have an 05 GC Laredo, V8 4x4, bought May of 05. I was getting 9 mpg, but now I'm averaging 11 mpg, at 17k miles, 80% city driving. Interstate I get around 16. Extremely disappointed in this vehicle,and it is a lease so I'm stuck another 2 years. I test drove an 04 GC Limited for a week and averaged 16 in town and was promised when I bought the 05 that I could expect the same.
#12 of 102 Gas mileage by podedwards Jul 18, 2006 (11:34 am)
Gas mileage is a product of several factors. There are mechanical reasons such as blocked filters, blocked exhaust or defective fuel systems.   However, there are other more common factors that have to be eliminated first. So I suggest that (1) tires be aired up to max psi but allow for expansion with warm up. The best way is to air them up cold to max psi, drive to heat up the tires for about 20 minutuies and then let air out down to max psi, (2) drive conservatively-don't gun it at starts, speed up slowly and drive at the speed limit, (3) keep the oil changed 3000 miles with synthetic motor oil,(4)check to see if the air-conditioning compressor is staying on all the time, (5) buy good gas-not cheap gas, (6) replace the fuel filter.   I have always gotten better than average gas mileage from all the cars I have driven and I think these habits really help.   I am getting excellent gas mileage with my 5.7 Grand Cherokee, I have a 202 Dodge 1500 4.7 truck that continues to average between 18-19 and 22-23 on the road.   2004 Mustang GT V8 that averages 22 and gets 26+ on the road (or less than 10 if I gun it-but it is worth it)   A 2004 Ford V6 Windstar that averages 16 with 22 on the road.   Driving habits usually determine potential gas mileage. A heavy foot is most often the culprit for poor gas mileage
#13 of 102 Real World Mileage for CRD? by transpower Jul 23, 2006 (5:03 pm)
According to a review from England, the 2006 JGC CRD gets 21.6 mpg urban, 32.8 mpg extra urban, and 27.7 mpg combined. However, press reports for the forthcoming US model of the JGC CRD say that it will get just 19 mpg city and 23 mpg highway. So, what gives? Anyone here from the UK to give us a real world report? Replies to this message: steve_ (Jul 23, 2006 5:35 pm) tomloy (Sep 15, 2006 2:23 am) tomloy (Nov 12, 2006 6:01 am) podedwards (Nov 30, 2006 12:13 pm)
#14 of 102 Re: Real World Mileage for CRD? [transpower] by steve_ HOST Jul 23, 2006 (5:35 pm)
Replying to: transpower (Jul 23, 2006 5:03 pm) Maybe those were Imperial (i.e. bigger) gallons? Tidester should be along shortly to do the math conversions for us.
#15 of 102 Calculating with Imperial Gallons by transpower Jul 23, 2006 (6:00 pm)
Interesting. 1 Imperial gallon = 1.201 American gallons. Therefore, under these terms (and I don't know if the UK really uses Imperial gallons), the UK JGC CRD would test at 18 mpg urban, 27.3 mpg extra urban, and 23 mpg combined. Still not the same as that reported for the American JGC CRD. Granted, there would be a difference in the methods between the UK and the US, but this much? Replies to this message: tidester (Jul 23, 2006 7:39 pm)

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