“Anyone who owns a car made before 2001 needs to check the compatibility of their vehicle with the new fuel.” Last year’s DfT report said vehicle compatibility had been the main barrier to the introduction of E10 so far. The report said not all vehicles had been approved by their manufacturers to use fuel with more than five percent ethanol. It claimed the majority of vehicles registered in the UK are approved for use with E10 with the number decreasing every year. READ MORE Last year, the DfT said there were around 400,000 older family cars which may not be able to use the new fuel with this figure set to halve by the time the new fuel is introduced.