Question regarding gas mileage for 98 XJ8
#1
Question regarding gas mileage for 98 XJ8
Hello Jaguar fans!
I own a 98 XJ8 with about 94k miles. Recently paying attention to the electronic gadgets. I realize I average 10.3 miles in City and 12 for Highway.
Am I missing something? The new MPG sticker says 16 City and 22 Highway and 18 in between.
Is it because something wrong with the engine or the gas I use? I really do not need to average what Hummer's do in MPG.
Please help!
I own a 98 XJ8 with about 94k miles. Recently paying attention to the electronic gadgets. I realize I average 10.3 miles in City and 12 for Highway.
Am I missing something? The new MPG sticker says 16 City and 22 Highway and 18 in between.
Is it because something wrong with the engine or the gas I use? I really do not need to average what Hummer's do in MPG.
Please help!
#2
I guess my first question is how are you calculating your gas mileage. How do you really know you are only averaging 12 MPG on the highway? The only accurate way to figure your gas mileage is to take an odo reading with a full tank of gas, then take a reading when your tank is empty, figure the miles you drove and divide it by the amount of gas needed to fill your tank. If you are using your computer and looking at the instant MPG, that can be all over the place.
I have averaged anywhere from 13 MPG (mostly city, with a heavy foot) to 23 MPG (all highway avg 75 -80 MPH) in my XJR that has had many performance mods to it.
I have averaged anywhere from 13 MPG (mostly city, with a heavy foot) to 23 MPG (all highway avg 75 -80 MPH) in my XJR that has had many performance mods to it.
#4
#5
#7
Are you saying that my 17-22 is bad on my XJR? Should I be looking into it? When you keep your foot out of it, do the XJR's get worse milage, or better?
Thanks! I guess it's time to do a true milage check...
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#8
Join Date: Jun 2007
Location: Pompino Beach , FL
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hey
no i mean jagsters mileage is bad.. yours is accurate.. i get the same.. well i get city 18.0 and highway i get 23-24 .. but i have a new engine.. but now it shud go down... got a 2.5-3.0 psi supercharger pulley going in this week... and a bigger supercharger cooler coming.. so i guess it will drop a bit.. we'll see.
no i mean jagsters mileage is bad.. yours is accurate.. i get the same.. well i get city 18.0 and highway i get 23-24 .. but i have a new engine.. but now it shud go down... got a 2.5-3.0 psi supercharger pulley going in this week... and a bigger supercharger cooler coming.. so i guess it will drop a bit.. we'll see.
#9
Where and how can I get my fuel trim read?
I am looking into getting a LR Disco 4.6 and by the MPG stickers it gets better mileage than my XJ 4.0 right now.
Thanks any help is appreciated!
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