Topic: Gas Mileage Thread

[Jeffy]

This is the official gas mileage thread.  So, post your mileage.  Here are some stipulations though.  Please post in the thread this additional information.

• Transmision Type (ie., Automatic - 30RH/TF909, AW4 etc..., Manual - AX-4, AX-5, AX-15, NV1500, NV3550, etc...)
• Engine Type (ie., F134, L134, Pontiac 151, AMC 150 Carburetor, AMC 2.5L TBI, AMC 2.5L MPFI, Chrysler 2.4L, etc...)
• Tire Size
• Differential Gearing (ie., 3.73:1, 4.10, etc...)
• Speedometer Calibration (ie., Y/N)
• List of ENGINE Mods if any

[4X4DAVE]

I average 13.76 mpg, this is taking ineffect of the tire change. I have an excel spreedsheet keeping track for the past year.

I drive mostly short distances within 5 miles, so thats why mpg is low mostly because of my gears, I need to change them.

3 speed auto
1995 2.5L
33/12.5/15
3.73
Speedometer Not Calibrated
4.0 t/b, t/b spacer, and K&N cone filter

Before on 30 inch tires and 4.0 t/b and spacer, I was getting an average of 17.1 mpg and also I think that I was driving mostly highway at that time

[jcsanders79]

Getting about 12-13 on my TJ. Got a 2.5L with the 3 speed auto,  4.88 gears, 33" tires, performance chip, header, 4.0 throtle body w/ spacer, K&N cold air intake, speedo calibrated

[SKI BOY]

18 mpg; 2.5L, at, 31x10.5, 3.73 gear, no speedo recal, 4.0L tb, tbs, hi-flow intake, jet chip, flowmaster exhaust, elect. rad. fan 

[Mozman68]

usually about 17 mpg....manual 2.5L running 31's...no revised speedo but checked with GPS...4.10 gearing...no engine mods.

[chardrc]

13mpg

ax5, 4.10 gears, 31's.. speedo not regeared, 2.5l tbi.. no engine mods and leaks oil

[wrangler387]

This is for my 1995 2.5L with 115000 miles. I get about 20mpg, unless i go on the highway... but i dont ever do that, all city driving.

• Transmision Type; AX-5
• Engine Type; AMC 2.5L MPFI
• Tire Size; 31x10.5r15 BFG a/t
• Differential Gearing; 4.10
• Speedometer Calibration; yes
• List of ENGINE Mods; DIY intake with AEM filter, TBS, 4.0 TB, pacesetter header...

[lanulos89]

12ish mpg 2.5 of course 3 spd auto 3.73's soon to be 4.11's full performance exhaust (header to tail pipe) 4.0 throttle body, and cool air intake.  31's and speedo not yet recalibrated

[Elyod]

98' 5 spd 2.5L 4.10 gears 30" no speedo calibration.  Have gps though around 17mpg, mostly around town. 

[Jesse-James]

~14mpg

2.5 auto, 3.73, 31's, orig speedo gear, 4.0TB and spacer

[Sidscan]

Transmision Type - Automatic - 30RHEngine Type (ie., F134, L134, Pontiac 151, AMC 150   AMC 2.5L 
Tire Size - 31x10.5
Differential Gearing - 3.73:1 stock auto
Speedometer Calibration  - No
List of ENGINE Mods if any - Bolt on 4.0 tb and tbs, PD firepower kits, champion truck 4412 plugs.
back to stock airbox.

Mostly city/hwy - little freeway.  Average mileage is 15-16. 

[jwrape]

Average of 12-14 mpg.
92 YJ
2.5L
4.0TB
Electric Fan
33x12.50 on 15x10 rockkrawlers
5 speed (AX15 upgraded)
4:10 gears
Cold Air intake
Exhaust leak that actually helps performance.

[lanulos89]

who is getting beter than 21???

[jcsanders79]

It must be the gas fairy?  I think someones math is not right I'm just pissed its not me!!!

[dunklervogel]

14-15 mpg mostly city

• Transmision Type: AX-5 manual
• Engine Type: AMC 2.5L
• Tire Size: 32x11.5x15
• Differential Gearing 4.10
• Speedometer Calibration: N
• List of ENGINE Mods if any: None