> Modern car fuel contains ethanol (10% in the EU) It‘s a maximum of 10%, but you almost never actually get that much. E5 fuel contains 0-5% ethanol, E10 conta

> Modern car fuel contains ethanol (10% in the EU) It‘s a maximum of 10%, but you almost never actually get that much. E5 fuel contains 0-5% ethanol, E10 contains 5-10%.