Miles per gallon is a flawed metric. I actually care how much money I’m going to spend to travel a given distance, not how far I can go on a certain amount of gas, . In other words, gallons per mile is the actual metric that matters to nearly all consumers.
The problem, as this graph shows, is that MPG and GPM are inversely related, which throws off all our intuitions. Improving your gas mileage to 15 mpg from 10 mpg will save you vast quantities of gas, which switching from an already efficient 35 mpg car to a 50 mpg hybrid will hardly make a difference at all.
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Canada calculates fuel economy using Liters per 100km or L/100km :)
Oh Canada, if only I could get my Canadian citizenship… ;)
Yes, but if you know one can’t you easily figure out the other. My car gets about 20 miles/gallon, and thus it’s what, 0.05 gal/mile?
I don’t really get the point of this though, and don’t understand your conjecture that improving from 10 to 15 mpg is that much greater than 35 to 50 mpg, The first represented a increase of 50% in fuel economy, whereas the later is only slightly less than that.
If you’re talking in terms of overall gas used, that might be a different discussion. It would be great to get big rigs to increase their fuel economy