Hey guys, so I'm trying to figure something out..
I'm new to these vehicles and i'm pretty confused on the fuel range.
Prior to me purchasing my Latitude, I had read online that they have a 15.8 gallon capacity and around 400 + miles (range) on a full tank.
When I took delivery, my vehicle showed a range of 280 miles with what was supposed to be a full tank. I figured they screwed up and didn't actually fill it. Well today was my first fill up and I noticed two things :
1. I didn't come close to the supposed 15.8 gallon capacity (filled up with 13.5, spilled gas at over 14)
2. The mileage shows 279 miles as the range.
Anyone else experience this ? Any ideas ? Could there be something wrong with my tank or computer ?
Fwiw, I've only driven in the city and have 284 miles on the clock.
#1. As was mentioned by Bill837 you would have to drain your tank or over fill it to get the full capacity. There will always be residual gas in the tank AND
you never want to run it near empty.
The fuel pump sits on the bottom and is cooled by the gas. Overheat it enough and you have a very expensive repair down the road, most likely out of warranty.
You can run out of gas and there will still be some in the tank.
Spilling over gas is very bad for your EVAP system. Stop at the first click off and save your self future problems.
#2. Range is basically real time based
on how much gas is in the tank at any particular time and your currant mpg.
For instance When I go on the highway after driving say 100 miles in town at 19 mpg my range may say only 270 miles. Once on the highway at 32 mpg my range starts to increase. It works the same in reverse.
In fact average mpg works the same way but can be reset by resetting the trip(s) to 0.
I usually run 30-33 mpg on the highway depending on the time of year(winter) and avoiding urban gas. Both mpg killers.
I have a V6 with AD2 and Tow.
The trail hawk is heavier and thus that impacts mpg also.
Not sure what the conversion formula is for added weight/mpg though for the Cherokee.
Also being a new vehicle impacts mpg big time especially with this ZF 9 speed. Mine had around 2,500-3,000 miles before it even started using 8th gear.
Once it started using 8th easily, my mpg shot up by 3/4 mpg I would guess.
You have to give your Cherokee a few thousand miles at least to fully break in for mpg.