| Silentalero |
Ok the last 2 tanks of gas I filled up i swear this car got retarded on me. 21 gallon tank at 22mpg highway = 462 miles till empty. Now yes given variance usually it trickles down to 440 or so when i have a fresh tank. But now its saying 360 miles to empty with 22.3mpg on a full tank. Even driving for 50 miles at 22mpg it dropped to 310 miles.
Its never done this before, im debating taking it back to the dealership if my gas mileage has gone to complete **** like that and let them figure out why the computer cant add correctly. Anybody else get this or have that problem |
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| 1badsterling |
| man, I wish I had those figures for mine. The best I got was 21.5 mpg and I had already gone 360 miles on the tank. Also, I have noticed that the computer reading is 1 mpg more than by manually calculating my mpg. |
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| LionSpeed |
This means only one thing Silentalero, you have the same "heavy right foot" as mine. :D
Life's too short to worry about few extra $$ for gas. Make good use of your right foot & listen to the sweeeeet sound of Vtec. :)
P.S. Above 5,000 RPM is required! |
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| KES |
My 2002 will do the same thing. I believe the computer uses recent data to calculate the miles to empty and is generally conservative. So if you are doing city driving in the last 50 miles before filling up it will give you a lower figure for the miles on the next tank. This will self correct or adjust as you work you way through the next tank. For instance, you fill up and it reads 320 until empty but then go on a 200 mile trip on the highway. You will notice that the miles until empty + the miles traveled will start to exceed 320. Likewise the reverse is true if you start with 380 and do a lot of city driving. Once you have less than 100 miles left on the tank there does not appear to be any further adjustment based on driving style.
This is just based on my observations over 95K of driving.
The dealer probably can do much as it is just the logic built into the software. And it is generally conservative so you won't run out of gas.
My rule of thumb is no more than 50 miles from when the low fuel light comes if highway & city mix or 40 miles if all city. |
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| Silentalero |
haha i wish it was as easy as a heavy foot. I have no reason to beat on the X. (thats why i have sportbikes :D ) I drive very conservative and only got on it once or twice since i bought it. Its just annoying because its recent that its doin this. and cant figure it out.
I unno, i wanna take it back there anyway to yell at them about the seat so ill mention it and see what they say. |
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| Trigger |
quote:
Originally posted by Silentalero
haha i wish it was as easy as a heavy foot. I have no reason to beat on the X. (thats why i have sportbikes :D ) I drive very conservative and only got on it once or twice since i bought it. Its just annoying because its recent that its doin this. and cant figure it out.
I unno, i wanna take it back there anyway to yell at them about the seat so ill mention it and see what they say.
Are you getting gas from the same station?...maybe you got a bad batch of 87 octane priced as premium.
Just a thought. |
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| ronf119 |
| i wish i could get into the 20s for mpg. the best i've gotten was 16.7 mixed driving. |
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| G. COLTON |
Kes, you said "My 2002 will do the same thing. I believe the computer uses recent data to calculate the miles to empty and is generally conservative. So if you are doing city driving in the last 50 miles before filling up it will give you a lower figure for the miles on the next tank. This will self correct or adjust as you work you way through the next tank. For instance, you fill up and it reads 320 until empty but then go on a 200 mile trip on the highway. You will notice that the miles until empty + the miles traveled will start to exceed 320. Likewise the reverse is true if you start with 380 and do a lot of city driving. Once you have less than 100 miles left on the tank there does not appear to be any further adjustment based on driving style. "
That is correct. As far as I know just about all vehicles use the same logic. Some just use more miles before changing than others.
Also just about all computers are going to be 1 or 2 miles per gallon off. Unfortunately, this is not consistent even in the same vehicle so you cannot even use a constant bias. Even a 1 tank fillup data is not totally accurate because it is almost impossible to fill to the same point at each fillup.
If you really want to know what the mpg figure is for your vehicle always write the odometer reading on each ticket when you get gas. Then after several tickets you can calculate the result.
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