Update to mine after the lift/tires/trimming/engine mods:

1995, 4.0L, AX-15, NP231, stock 3.07 gears, 261,000 miles, *703 injectors, 60mm throttle body, high flow exhaust, 33x12.5x15 Mickey Thompson MTZs

17.3 mpg average city/hwy combined

 

1997 4.0L AW4 np231 3.55 232,000 K&N filter high flow exhaust 31x10.50 wild country MTX's. I get about 15 mpg highway/city avg.

 

Stock drivetrain in my 99XJ
3 inch lift with 31x10.5

27.6 MPG at 65mph for 53miles.
on the way back 27.2. still pretty good.

Cruise control

 

It must have been down hill both ways.

 

With a tail wind

 

95 xj stock engine, stock wheels and tires 16MPG [combo city/highway] on a good day...

 

'92 4.0, recent tuneup, 15in tires, Glasspack with no tailpipe, Teenage driver, mostly highway driving.... About 12-14 MPG.

I need to resolve the 5th thing to get better mileage.

 

Should be better with 15 inch tires...

 

98 sport 4" lift 31's, stock bumper and flares roof rack but no cage, 11-12mpg, fuel pump needs replaced

 

Well like i said, i need to fix the fith T-word issue.

I accelerate fairly hard lol.

 

Stock 2.5td 1997 between 31-32mpg driven sensibly.

 

You also got the Diesel lol.
Another issue i have is i live in a hilly area.

 

Let's hope when you run out of petrol your at the top of the hill LOL.

 

And 5 layers of wax lol
30 PSI in my BFG A/Ts


Yeah, I know hard to believe...
but my XJ runs 99.9% perfect and sometimes shocks me.

 

1998 XJ 4x4 AW4, 3in lift on 31x10.5

IAC relocated
AirHog filter, with opened box
fresh tune up
703 injectors
Flowmaster with cat
Mobil1 oil change
Mech Fan delete
99+intake is not installed yet (sitting in the garage...)
5% added to mileage for tire correction

I am averaging 17.8mpg (alot of highway) but fluxuates between 15-17.8