500+ lbs more or less is a serious difference in weight for a car the size & weight of a Metro.
I'm a bit surprised that it doesn't show more clearly than just 1.5 mpg going from M to E.
Quote:
Originally Posted by kgwedi
This shows almost no advantage to either being light or heavy.
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It does however show the effect of wind and - more importantly - the change in altitude.
A whopping 30 mpg
It also shows that variation in this kind of real-world testing can be quite high - 5 mpg for the same situation.
IMO this kind of real-world testing simply cannot bring out the minor effect of small mods, as the testing environment isn't stable enough.