alot better than the j10 <img src="/forums/images/graemlins/lol.gif" alt="" /> but seriously in my 89 i get roughly and i do mean roughly 20 mpg im guessing that because it hasnt been running great due to issues it had(crank sensor, fuel pressure regulater,coil,and throttle position sensor) but all of that is stright now oh and guys i didnt need a trans my tps was still a little off giving it a slipping feeling. but before i was going about 120miles on 15 gal i always filled up at 1/4 tank and i noticed when i filled up last week i was at 158 so i will let you know how well i do at next refill .

i pretty much listed the main problems they have except the fuel pump that is the other issue which i resolved already. they do great in the snow for the past 2 winters while the snow was about 2 ft deep i would go out and play around in it and i notice that not many of the high dollar suv's was out although i did see one hummer stuck but im sure it was due to driver error and false security and a couple of times the people that plowed the parking lot at the apt pushed it behind my jeep and since i didn't have anything to dig it out i just locked it in 4 low and went and the snow wasnt too deep then just about 3 foot
so all in all in my oppinion you should do well and be very happy with the xj <img src="/forums/images/graemlins/cheers.gif" alt="" />