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Unread 02-12-2003, 05:43 PM   #1
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Join Date: Dec 2002
Posts: 10
Fuel Mileage

Just took the GC on a long trip and wanted to see what the fuel economy was at the end. Put on about 1200 miles, mostly highway, and the trip computer said I averaged 18.5. Is this about right? For the first part (all highway for about 5 hours) I averaged 19.3. Which seems just about right for the V8.

Anything that can be done to increase this? K&N filter? Other alternatives?


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Unread 02-12-2003, 06:41 PM   #2
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Join Date: Nov 2002
Location: Jefferson State
Posts: 814
It depends...

Which powertrain is in your Jeep?

Our '95 has the 5.2, auto & quadratrac (natch - all you could get with the V8), 3.73 gears & towing pkg. We run close to the EPA estimates - 14/18. As low as 12 in town, up to over 20 highway. Go faster, mileage suffers. Also hills or headwinds will affect it. On a trip to the midwest last summer, did better on flat ground than in the Rockies.

Yours is probably about right. BTW I have a K&N replacement panel. Doubt if it helps mileage much, but I never need to buy another filter!

I think your driving habits will affect your mpg more than most simple mods. Also, keep your air pressure up & don't run big fat tires!
1995 5.2 ZJ Sold... but still in the family
Stocker is offline   Reply With Quote Quick reply to this message
Unread 02-12-2003, 06:45 PM   #3
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Join Date: Feb 2003
Location: Raliegh, NC
Posts: 91
The best I've gotten on my 98 ZJ with the 5.2L, quadrtrac, and tow pakage is 15.5 in a mix of city and highway driving. The bearings were shot in the rearend and haven't taken any road trips since it was fixed so don't know if that had any effect or not. Probably need to do a tune up too.
This aint your daddy's Jeep!

'98 ZJ with 5.2L
Stock except for Optima red top
bigger tires(30x9.50 15 BFG MTs)
Rancho RS5000 shocks
swapped in NV231
and Pioneer CD deck.

White Jeep Club member #14
ILoveto4x4inNC is offline   Reply With Quote Quick reply to this message

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