25 sounds reasonable stock depending on driver and matter of fact, that's about what I got with my stock jlu but when I added what everybody here does on this forum, 35s, lift kit, bumpers and winch and a tire carrier . ....That definitely took its toll and knocked it back to 21. As I mentioned...
That means nothing. Before I put larher wheels and tire on my gladiator it was reading 25 and it was nowhere near that. Only hand calculated. matters. I can get it to read almost 21.5 with 35s on 3.6 but hand calculated it gets 18ish.
TFL got the same thing towing against the ford hybrid...
So I am probably one of the few people who have owned both. I was one of the first who owned the JL Eco Diesels. I owned it for about a year and put 26k miles on it. I then sold it when the Eco Gladiators came available although at the last moment I opted for the 3.6. I did this because after...
If you enjoy those mpg numbers don't do anything to it. I never got that good of mpgs with eco Jl even before I lifted it and put big tires on it but it dropped like a rock once I did. 2" lift and 35s I was averaging 20-21 driving pretty conservatively. 60/40 hwy/city. I do miss the sound of it...