E5 vs E10 Fuel: What’s the Difference?

Both E5 and E10 are petrol blended with ethanol, a renewable fuel made from plants. The numbers refer to the percentage of ethanol in the mix:

• E5: Up to 5% ethanol
• E10: Up to 10% ethanol

E10 is more eco-friendly because it reduces carbon emissions compared to E5, which is why it’s now the standard petrol in many countries. 

However, there’s a catch: ethanol can be tougher on older engines.If you drive a car built before 2011 or a classic car, E5 is usually a safer choice. 

The higher ethanol content in E10 can cause problems with rubber seals, gaskets, and fuel systems in older vehicles, potentially leading to leaks or corrosion.

For most modern cars, E10 is perfectly fine and can save you money at the pump. But if you’re unsure, check your car’s manual or look online to see what’s recommended.

Classic car owners or owners with older cars, might want to stick with E5 to avoid any risk. While it’s slightly more expensive, it’s worth the peace of mind to keep your pride and joy running smoothly.