In the last couple of years, petrol companies have started offering petrol with 10% ethanol in them, presumably at a cheaper price than normal unleaded.
However, I've noticed (although this is just from a gut feeling), that my car when using fuel with 10% ethanol in it, seems to use up the fuel much faster.
does ethanol actually save you money? Is it better for the environment?
Has anyone done any tests to see if the fuel economy is the same with ethanol fuel vs normal unleaded?
Cause if it is 10% less efficient, isn't that a false economy? You might as well just buy 10% less normal petrol - in fact, it'll be better cause your car will weigh less because you're carrying around less fuel.