In car mileage vs actual calculated mileage
#1
In car mileage vs actual calculated mileage
Not sure if true for anyone else but so far I have had two fill-ups and in car mileage is a bit higher than actual calculated mileage (miles vs gallons at pump)
Most recent one in-car was 28.4 but actual was 26.2, a variance of around 8%. To me that is pretty high variance in numbers.
I have a 2008 IS250 with 75K BTW.
Most recent one in-car was 28.4 but actual was 26.2, a variance of around 8%. To me that is pretty high variance in numbers.
I have a 2008 IS250 with 75K BTW.
#7
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#8
The wider the gap generally means dirtier injectors.
Also consider each pump doesn't stop at the exact same spot. So this type of measure has a lot of errors in it. Pump, Pump stop point, miles, actual miles, user error etc.
Also consider each pump doesn't stop at the exact same spot. So this type of measure has a lot of errors in it. Pump, Pump stop point, miles, actual miles, user error etc.
#10
Lexus Champion
iTrader: (13)
After several months of testing this, I can confirm this:
IS250 2012, On average: computer shows: 25, actual: 22.6 over the course of 3 years. It is 2.4 MPG higher than actual.
IS350 2006, on average: computer shows 19, actual: 19. It is spot on almost EVERY TIME over the course of several months. The margin of error is about 0.1-0.2. I'm very surprised.
I speculate that on IS250, computer displays 2+ MPG better than actual and on IS350, computer displays more accurately may be 0.1 or 0.2 higher. The ones who have almost accurate results are driving IS350???
Last edited by FSportIS; 08-07-14 at 05:24 PM.
#12
I haven't calculated the long-range MPG calculation, but in my car the "tank MPG" is very accurate by my calculations. It's usually spot on, or a few decimal places off.
#14
Lexus Champion
iTrader: (13)
Why do Lexus do this, trying to fool people into believing that IS250 has way way better MPG than IS350?? In reality is, the difference is only 1-3 MPG difference.
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scruthirds
IS - 2nd Gen (2006-2013)
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11-10-17 04:58 AM