all i know is that the combustion temberature is lower than with petrol which means there is less pressure in the combustion chamber... This means that your car will still have the same straight lime performance and handling but will lack acceleration. On a brighter note you can buy an additive which isn't too expensive which helps seperate the molecules so when they enter the combustion chamber they have a much larger surface area which means they combust easier and faster... Personally, if your doing motorway miles it would be ideal but if your more for wizzing round town I would stick with petrol... you could always get a second petrol tank fitted in the boot and pop over to france every week to fill up if price of petrol means that much to you!!!