Cost per mile?
Wouldn't this category make a level playing field for all to compete on?
I will be tuning for E85 soon and it is $.40 cheaper than regular gas and ~$.60 cheaper than 92 octane. I won't get the same raw mileage but my cost per mile will be lower. Just a thought. :thumbup: |
However, it also means the cost per mile will increase in countries / states where gas costs more. In the UK I would need 4-6 times better MPG to break even in that case :)
Maybe some way of having a multiplier, based on the local price of standard gas?. But it would have to take into account the carbon emissions too (hopefully E-85 is helpful for the environment). I know that with full 'mineral' gas, my car gets a minimum of 350 miles to a tank, and still has 10-20 miles more, whereas on cheap Tesco (supermarket) 5% ethanol petrol, I got 240 miles then ran broken down due to the petrol actually running out (was very unexpected). So, my car does more environmental damage on the 'bio' petrol! |
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Motivation is all the same, best FE. This lowers your cost per mile. I can tune my engine to accommodate for the change in stoichiometry to help with the "power" loss. :thumbup: |
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koffin -
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For the sake of fun I will call a pseudo-buck a "Quatloo" (https://en.wikipedia.org/wiki/Quatloos.com). Joe Gas Saver : 100 miles 2 gallons @ $3.00 / Gallon => 6 gallons / 100 Miles = $.06 / Mile Jane Gas Saver : 200 miles 4 gallons @ $3.50 / Gallon => 14 gallons / 200 Miles = $.07 / Mile Spot Gas Saver : 300 miles 6 gallons @ $4.00 / Gallon => 24 gallons / 300 Miles = $.08 / Mile Now, focusing on the price per gallon, you will see that the average price of gas for this day is 3.50 Quatloos, i.e. 3.5 = ($4.00+$3.50+$3.00) / 3. This generates the same cost per mile in Quatloos : Joe : (2*3.5) / 100 = 7 / 100 = .07 Quatloos / Mile Jane : (4*3.5) / 200 = 14 / 200 = .07 Quatloos / Mile Spot : (6*3.5) / 300 = 21 / 300 = .07 Quatloos / Mile But, what if Joe was getting only half the MPG as the other two GasSavers? In this case Joe had to put in 4 gallons of gas instead of the original 2 : Joe Gas Saver : 100 miles 4 gallons @ $3.00 / Gallon => 12 gallons / 100 Miles = $.12 / Mile In the above, Joe's absolute cost per mile is greater than Jane's and Spot's. In Quatloos it will make sense because the Quatloos per mile doubles : => Joe : (4*3.5) / 100 = 14 / 100 = .14 Quatloos / Mile Unfairness Factor : Depending on which day you fill up, this could effect your Quatloo cost per mile. However, we all suffer from that dingy reality every day of the year. This does not address different octanes and fuels. CarloSW2 |
why should your cost per mile just count fuel? with my simple vehicle log book I can tell you how much I spent per mile things like insurance, tires, the overall cost of the car, oil changes, suspention, it takes a few minutes to figure out the current number, but it's all in there, and at the end of the life of a vehicle it's fasinating to look back on what was spent.
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Using this logic though, all the measuring sticks we have in place are skewed. As we know, our test control can't be perfect based upon geographical location, fuel prices, and other variables. I am still curious as to how I stack up to those with diesels, hybrids, and misc on the cost per mile basis. My personal challenge is to have my cake and eat it too. I want a car that can be track competitive but can achieve ~40mpg and carry my family and lots of groceries. I know what my avg cost per mile(just accounting for fuel, not upgrades and mods, for now). My goal is to lower that each time I fill. Its just another measuring stick. Perhaps we can formulate an equation that takes in account raw MPG and cost per mile. |
koffin -
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Ding!!!! Here's an idea. Extract data from the "gasbuddy" website or some other governmental equivalent. The idea being, there should be some "average global" or "average national" price for gas out somewhere on the web. Maybe something based on the daily price of a barrel of crude oil? Quote:
CarloSW2 |
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I too will think on this. :thumbup: |
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