I have a 2001 Wrangler 4.0L that I just bought and I thought that I would get around 18 MPG on the highway. I'm not even getting close to that. It has 73,000 miles on it and I'm not real sure if its had the plugs and wires changed yey or not or even if that will help. Could someone give me some tips on how to get better gas millage from my Jeep? Thanks.
im getting about 13 on my 4.0 auto, that highway and interstate driving. buts its also 10 degrees out side so the jeep runs for about 20 min before i leave in the morning
First off get a real calculation. Don't guess how much is in the tank. Fill it, drive it, then put gas back in it and divide the miles driven by gallons put back.
Very difficult question to answer. Do you have stock gears, tires or have there been alterations? A totally stock Jeep may get 16 to 18 mpg on the highway in good driving conditions. Any tire size changes affects the odometer along with the mileage. Also, the gas gauge is not the most accurate thing ever made either so you certainly can not just eyeball it and think you are accurate. Do what Neil says but if you have larger tires the odometer is going to read incorrectly. Try a GPS for accurate reading.
I would bet its your shoes, the heavier your right shoe is the worse it gets. I personally drive 55-60mph on the highway in mine and get 18 to 19. Its not uncommon to get 325 on a tank. Commplete stock 5 spd, 4.0 with 202,000, and 31s.
A full tank of gas last 4-6 weeks if not more......wait I have been unemployed for almost a year. No wonder........
For over 21 years I drove 100 miles a day commuting and when i stopped driving it like it was a sports car my mpg was a constant 18-19 mpg. Sometimes is sucked being the slowest vehicle on the interstate but after a while I did not care. I had to fill up every 3 days and when gas went well over 3 a gallon it really hurt the wallet.
When I drove like a maniac I had to buy gas every second day or else I would not make it home.
I have an 04 Rubi and get 18.5MPG hwy and can get as high as 21MPG its all about how you drive it.
- Shift early don't go over 2000 rpm with each shift I am in 5th gear before 40MPH. slow acceleration.
- Stay Light on the pedel.
- on the Highway speed is your enemy the faster you go the more gas is needed to push the jeep through the air. I will go 65 MAX with Cruse on
- Check your plugs make sure there gapped right.
- Run some SEAFOAM addtitive throuh the Gas tank to clean the injecters and valves.
- Check your Air cleaner.
Thats a bit expensive don't you think? Perhaps you should check the cheaper things like how your driving it how you drive it is the #1 reason for poor gas milage taking it up to 3500 RPM with the pedal to the floor then shifting is the most common reason for poor MPG. #2 is speeding anything more than 60 and your using alot more fuel to get that post office box on wheels through the air. if your not getting codes returned by the computer most likley your O2 sensors are fine and its an ID10T error. :banghead:
Way back when I got my '04 Sport with 3.73s and "stock" tires, and 5 speed manual with 4.0...and I drove 55mph it would get 22 mpg consistently...and saw 24 mpg a FEW times.
Small lift, different bumpers, and 31" tires, mileage went to 19-21 highway and 17-19 around town.......now......... more lift, 33" tires, and it is down to 15-17 mpgs...but it sure is fun...IDK highway mpgs it doesn't go there much anymore.....
yep..my 05 sport 6spd with 3:73 gears and "stock tires" gets 20mpg on the interstate. I drove 3.5 hours last weekend back home from atlanta......stayed at about 68 on the highway.
Speed is the killer on jeeps....what is your highway speed? Anything above 65 and it's a slippery slope. I drive ~70mph and I've never gotten above 17mpg....and my jeep is perfectly in tune...runs awesome. It just sucks gas....that's the life of a jeep owner. We drive a 4wd vehicle powered by a tractor engine.
My 4.0 6-speed will eke out maybe 18 on the highway (65 or under) and 14 around town. That's on stock wheels/gearing. I don't hammer it, it's just a gas pig. It's a fun vehicle, though, so I tolerate it.
i would change the oil and plugs ( your jeep should have a distributorless coil rail setup, meaning there are no wires to change), i would also check your tire pressure( it makes a big difference , i noticed 3mpg gained with increased pressure in my wifes honda on a recent 800 mile road trip) ... also my jeep gets the best gas mileage at around 50 mph ... if you cant handle poor gas mileage a jeep isnt a good vehicle for you to drive everyday, especially not a wrangler, consider a 4cyl econo car for a daily driver.
My TJ is entirely stock except for 31" BF Goodrich All Terrains. With the 4.0 L and 5-speed manual. Around the city I get 12-14 MPG. On the highway for long treks I was getting better MPG.
Absolutely is about how you drive it.. I had the same set up and was getting 18 on avg. When I bumped up to M/T 33s and a 4" lift I still get 15-16.
12-14 with near stock lift is hitting the skinny pedal pretty good. Hope you are at least having fun with it.
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