Hey guys,
I'm considering purchasing an xj for my DD. I know they don't have the greatest mpg but that's how much I love xj's. The only mods I want to do are a 2" budget lift, slightly larger tires, new steel rims, and a new muffler. How big of an impact on mpg do you think these mods will make?

 

If everything is in normal working order id say youll get 16 city and about 20 hwy

 

Thanks man

 

Ya. I agree. That's what I have got on both of mine, but I drive very conservatively. There are some things that can slightly improve mpg (somewhat debatable) I noticed improvements after less restrictive intake and exhaust. Just buy one, its rougher at the pump but I guarantee you won't regret it.

 

Thanks

 

I got 3 inch lift, 31s with stock alloy rims, flowmaster super 40, cowl intake, and a hi-flow cat... and only get 12 mpg every tank. Highway and city mixed.

I dunno if something wrong or what.

But I know steel rims add a good amount of weight and can drop some mpg. My complete stock XJ got 16.

Too be honest, you're gonna havta get used to bad mpg with an xj. It's inevitable. Cause theyre a brick on wheels...or you will keep thinking...hmmm maybe just one more upgrade, maybe one more inch, maybe alittle beefier tires. It's the XJ curse!

 

With my 6.5 inch lift and 33" tires with steel wheels, I get 16 mpg highway and 14-15 stop and go traffic.

That being said... you would get between 16-20.

I would recommend aluminum wheels if you can find them. They're lighter than steel and will help with mpg.

 

I go tthe setup you just purchased and I get about 8mpg, nj.

 

The key thing to do is make your rig as near factory-fresh as possible. Keep on top of maintenance and don't cheap out on parts when it comes to replacing something that's even slightly worn. With all that in place, even something like a lift won't become a burden at the pump.

 

Do you have any other mods to your XJ? I currently have 4.5in on 31s and I get 15MPG

 

No everything else on my Jeep is stock... for now.

 

My 89 with aw4 and 4.5" lift on 32s and a straight pipe averages about 16mpg mixed driving...

 

I mainly do city driving everyday. Highway is occasional but you never know.

 

I wanna regear will that help?

 

It would, but I still run the 3:55s