Quote:
Originally Posted by Ferra
because mpg is generally a non-linear expression...which makes comparison difficult & confusing especially when you start looking at the more extreme ends..
Example: when you compare 50mpg vs 70mpg...the 20mpg difference looks huge
However, when you do the calculation, that 20mpg difference will only save you 1.3L of gas over a 100km trip.
On the other hand, when you compare 10mpg vs 30mpg (also 20mpg difference),
this 20mpg difference will now save you 15.7L of gas over the same 100km trip...
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You're 100% right - but is this something new? Don't ppl already know this?