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rbowman rbowman is offline
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Default What is the realistic accuracy & precision of typical consumerMPG calculations (tripmeter miles/pump gallons)

On 07/22/2017 08:40 PM, Mad Roger wrote:
But remember, your inaccuracy is no better than your worst measurement, so,
what do we do about a tripmeter that has no decimal point?

I will wager that most people use the tripmeter and not the odometer.


I'll go out on a limb here -- where do we find a trip meter with no
decimal place? In fact, before trip meters became ubiquitous, the
odometer showed tenths.

https://i.ebayimg.com/images/g/wVoAA...gCa/s-l300.jpg

This is similar to the panel in my '86 F150. Early in the game both the
odometer and trip meter were mechanical and read tenths.

Think about it. In a newer car where the odometer only shows miles, how
do you follow directions like 'turn right four tenths of a mile past
mile marker 37' ?