Gas

[Vtur]

?

Next time you fill up, WRITE DOWN the average MPG.
Then compare that with the MPG at the next fill.

Kevin

This ^^^

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[Cansberry]

The computer is estimating how far you can go based on your driving habits. Driving habits (ie how fast you drive) changes your average MPG, this your range. It has nothing to do with the gas, amount in the tank, gas station, or anything like that. It's a bad guess thats always getting recalculated

 

[Vtur]

Just drive a full tank from each stations. Let us know if you gained any mpg.

 

[Gvsukids]

Which tank gave you more miles of smiles?

 

[ATL_Rubi]

The Gladiator MTE and MPG are both Overestimated and Inflated, respectively. I track miles via GPS and track fuel with a few apps (for work). On average, I get 14.1-14.6 MPG per the apps, while my Jeep will show 15-15.5ish. Miles are accurate to within a few miles (usually less than 5 between the cars odometer and GPS data.) As long as it's filling up to 18-19 gallons, you're good to go and have a "full" tank.

AS others mentioned, MTE is based on the MOST recent driving data, my guess is driving data within the last 30 miles (most European cars use this method, stellantis being European, just a guess). It takes the most recent data against the amount of fuel left and applies it to the MTE.

 

[Jeeperjamie]

The Gladiator MTE and MPG are both Overestimated and Inflated, respectively. I track miles via GPS and track fuel with a few apps (for work). On average, I get 14.1-14.6 MPG per the apps, while my Jeep will show 15-15.5ish. Miles are accurate to within a few miles (usually less than 5 between the cars odometer and GPS data.) As long as it's filling up to 18-19 gallons, you're good to go and have a "full" tank.

AS others mentioned, MTE is based on the MOST recent driving data, my guess is driving data within the last 30 miles (most European cars use this method, stellantis being European, just a guess). It takes the most recent data against the amount of fuel left and applies it to the MTE.

Your jeeps more accurate than gps tracking because your jeep can take into account idle time and gps can't. The jeep also gives a overall average based on certain factors that a gps app can't figure in. I know people want to say this and that about the computer being off but if you hand calculate, which is probably the most accurate way to do it, you will be pretty close to what the jeep says.

 

[ATL_Rubi]

Your jeeps more accurate than gps tracking because your jeep can take into account idle time and gps can't. The jeep also gives a overall average based on certain factors that a gps app can't figure in. I know people want to say this and that about the computer being off but if you hand calculate, which is probably the most accurate way to do it, you will be pretty close to what the jeep says.

That's fair, most of my drives include very little idle time, and the idle time that I do have, ESS is active. Further, idle time is calculated by the app due to keeping track of the amount of fuel per fill-up. If I maintain filling it up to an exact amount or until the first click, it will do the math between fill-ups to determine how much fuel was used. But, alas, as you said, the jeep is probably right. There's a discrepancy somewhere between the two.

 

[Deleted member 52902]

Not that this has anything to do with your miles to empty, but may I ask if there is some sort of modification(s) to the original engine that requires or benefits by the use of Premium?

Okay got a brain teaser stop at a gas station called Circle K full up the Gladiator guage says 287 miles till empty go to another gas station called Fast Trac same amount of gas same premium gas same amount of money but this one says 330 miles till empty ?

 

[ShadowsPapa]

Your average MPGs can vary and that's what it's based on. Definitely doesn't have anything to do with you put in premium in I can promise you that.

No kidding. It hasn't yet figured that out plus there's two fuel trim tables used - short term and long term and it takes some driving to get the latter modified.
One tank doesn't do much, and 1 minute of fuel being in a tank.

Still doesn't get the concept of the vehicle tracking the last miles of driving, how it was driven, the loads on it, and other factors. It then moves that information forward as an estimate of what to expect going forward.

I started this tank with an estimate of about 320 miles based on how the last tank had gone - and I'm approaching 400 miles on this tank. It keeps adjusting up and down - but it's going to end up close to 400.
I noticed that the more I stop and start it, the lower the remaining miles drops - and sometimes by as many as 20 miles just from stopping at this store, then going to the next.

 

[ShadowsPapa]

That's fair, most of my drives include very little idle time, and the idle time that I do have, ESS is active. Further, idle time is calculated by the app due to keeping track of the amount of fuel per fill-up. If I maintain filling it up to an exact amount or until the first click, it will do the math between fill-ups to determine how much fuel was used. But, alas, as you said, the jeep is probably right. There's a discrepancy somewhere between the two.

I use "FillUp" app on my phone. Over 3 or 4 tank fulls, the average is actually right on.
One fill the Jeep may have a higher mpg vs calculations by 0.3 and the next time it might be low by 0.4 and the next time high and so on. But over multiple tanks, the truck and the app always match within a couple of tenths of a mpg. That's great considering there's likely some rounding of numbers and so on.



You can't go by one tank because it's humanly impossible to get the exact same amount of fuel in that tank each time you fill it. Anything can change the total amount of fuel you get in by anywhere from fractions of a gallon to more than a gallon. You just can't get it exactly right on and people need to accept that as a fact and quit insisting they fill it the same every time. It's not possible.
My comment on "but I fill it the same" or "it clicks off the same" is BS. You think you do - but there are too many other things going on with these, and the world of physics and fluids in general. For one, the fill tube is across the truck from the tank and the fill enters at the bottom. How fast is that tank venting allowing more fuel in, among other questions.
You can't do it so don't insist you do fill it the same every time. That would require the same tire pressure in all tires, parking on the exact same spot at the same pump at the same station with the air temperature and fuel temperature always exactly the same and I'm probably leaving some factors out.


People bitch about the cluster mpg being way off - if your tire size is accurate based on ODOMETER and if you take multiple fills into account, it's pretty darned accurate.

 

[Jeeperjamie]

No kidding. It hasn't yet figured that out plus there's two fuel trim tables used - short term and long term and it takes some driving to get the latter modified.
One tank doesn't do much, and 1 minute of fuel being in a tank.

Still doesn't get the concept of the vehicle tracking the last miles of driving, how it was driven, the loads on it, and other factors. It then moves that information forward as an estimate of what to expect going forward.

I started this tank with an estimate of about 320 miles based on how the last tank had gone - and I'm approaching 400 miles on this tank. It keeps adjusting up and down - but it's going to end up close to 400.
I noticed that the more I stop and start it, the lower the remaining miles drops - and sometimes by as many as 20 miles just from stopping at this store, then going to the next.

Yeah mines normally between 350 and 370 unless the wife drives then it gets down to 325-330. A lot of factors , drive throughs, idle time etc come into play. My tires also have about 42000 miles on them now and it's about time to throw the replacements on in the garage. I'm curious to see how the 5lbs a tire will affect the Mpgs in the truck since the Geolanders weigh 77lbs and the Kanati's I'm currently running are 72lbs. Hoping to stay above 17.

 

[John Lenheiser]

I never look at the stats on the dash, I just fill up at Walmart, pay their price and be done with it. You should know what fuel mileage your vehicle gets with your driving conditions, vehicle options, and driving habits.

 

[ShadowsPapa]

I never look at the stats on the dash, I just fill up at Walmart, pay their price and be done with it. You should know what fuel mileage your vehicle gets with your driving conditions, vehicle options, and driving habits.

I pay attention because observations over time is one thing I'm good at, and as a professional troubleshooter, I find it a handy aid in determining when there's something happening that should not be happening. If I see a sudden, or even not-so-sudden, downtick in the mpg of my vehicle, I look for "what changed". Yes, there are normal reasons for mpg to fall or rise, but taking all sorts of other factors into account, I know then if under certain conditions that number is lower than it should be, I look for problems.
I always have made casual observations of such things - mpg, voltages, temperatures and other things.
I also can mentally track what changes I've made to my vehicle vs. the mpg and other factors.
Numbers are a tool.

 

[Jeeperjamie]

I pay attention because observations over time is one thing I'm good at, and as a professional troubleshooter, I find it a handy aid in determining when there's something happening that should not be happening. If I see a sudden, or even not-so-sudden, downtick in the mpg of my vehicle, I look for "what changed". Yes, there are normal reasons for mpg to fall or rise, but taking all sorts of other factors into account, I know then if under certain conditions that number is lower than it should be, I look for problems.
I always have made casual observations of such things - mpg, voltages, temperatures and other things.
I also can mentally track what changes I've made to my vehicle vs. the mpg and other factors.
Numbers are a tool.

This totally, lived and learned. I always pay attention to MPGs because it can tell you a lot about something going on with your vehicle. I'm constantly listening to the jeep or any vehicle I drive and watching the performance. Perfect example was on the way to the mountains I noticed and the wife noticed the jeep rising really rough and I thought I had a unbalanced tire, plus it just felt like the jeep over all was lagging. Come to find out the dealership had inflated the tires to 41lbs the they rotated them Friday. I hadn't had it on the interstate since Friday and I immediately had her pull over and bumped it down to 34lbs where I like it at. 100% better, you would be surprised what 7lbs of pressure will do.

 

[Silverator]

Thanks guys!! This thread is comedy gold!! Needed it this morning.

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