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MPG display accuracy

Created May 28, 2008, at 10:05 pm by Ryball78

Hey everyone!

I bought an '08 Honda Civic Hybrid a couple months ago and I was wondering if anyone else has noticed a discrepancy between the numbers on the MPG display on the dash and calculated MPG? Every time I fill up, I calculate the MPG just to see how close it is to what my MPG display is showing, and it is consistently 2+ MPG higher than the display. Does anyone know how accurate the display is? I'm assuming calculating would be more accurate (and I like it when my display is showing 48 mpg, and I calculate 50 mpg)!

If anyone has any thoughts or have noticed the same thing, I'd appreciate some input.

Thanks!

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MSantos
Senior Member

3 years ago

The Civic Hybrid II is one of the few hybrids (in fact, the only one I know) with a mileage display that actually under-estimates its true mileage. In other words, the displayed mileage is 1-2 MPG more conservative than the tank hand computed mileage.

This is a well known HCH-II attribute... which while not perfect is not too bad either... especially when you see several other hybrids doing exactly the opposite on a regular basis (Camry and Prius for example) ;)

Cheers

MSantos

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Mendel Leisk
Senior Member

3 years ago

Our mileage is usually slighty better than the car's prediction, but not by much. Also, it's fairly consistant.

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Ryball78
Junior Member

3 years ago

Thanks for the comments guys! Very helpful!

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HemiSync
Member

3 years ago

I have the HCH-I and it is either dead on the money or a couple mpg over the calculated, I guess when they came out with the HCH-II they decided to make the software underestimate that way you feel better when you see the calculated mpg. LOL

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