Ok I found the original window sticker and it says 16 City / 21 Hwy
Estimated annual fuel cost of $1168
4WD w/ lockup torque converter
$31,020 in 2004 (new) OUCH! Just thought I would ad that.
The Prius LMAO!!!

 

According to fueleconomy.gov, the '04 Grand (4x4, auto, 4.0L) is rated at 14 city, 19 highway, 16 average. Those figures are likely based on a more realistic formula than was used in '04. Back then, the ratings were based on manufacture data which was often a little... optimistic? Current numbers are based on a formula that uses EPA data through real-world testing.

I really was joking about the Prius, I hope everybody knows that. I wouldn't wish that thing on anyone.

 

The 05 and newer grand Cherokees have the v6 from the dodge caravan minivans!!! Why would you want that in a jeep? 4.0LHO FOREVER!!!

 

The 2014 prius C looks about 1000x better than the old prius. More like a Golf but still kinda terrible.

I want one of those new volvo TDI hybrids that are getting 75-90 mpg ;_________;

 

upgrade injectors to 4 hole i gained 2mpg on my xj but thats compaired to the 200k mile old ones im lifted with 32s and get 18 mpg highway

 

Get a Diesel, give a passenger a lift and share running cost's, or use the bus, not the best choice of vehicle for penny pinching.

 

I have an 04 GC Overland with 210,000 and combined city highway/city 17mpg, city 15.4, highway 18.8 @ 75 mph. All these are true "IF' I keep my foot out of it.

Best part it's a 4.7 V8 Power Tech HO with 3.73 gears, runs like a striped ***** ape and will bury the speedometer (120) so fast it's unreal.

Granted these numbers aren't the greatest but I have no problems living with them for everything it gives me in all areas. With options on par with my Lincoln Town Car and it is loaded except it has Nav the car does not.

 

I think the biggest problem you'll face in terms of improving your fuel economy is that you want a SUV. Suv's are not aerodynamic therefore they get crappy gas mileage.

You could take a super efficient power plant from a Prius or an accord, put it into a Cherokee or grand cherokee and still get crappy mileage because they are about as aerodynamic as a refrigerator.

Just as an example, Honda uses the same 2.4 liter in the accord as they do in the crv. The crv is going to yield around 20 mpg while the accord will be pushing 30. The big difference between the two is aerodynamics.

 

Stupid air, always screwing us out of good mileage.