What is the Difference Between Unleaded and E10?

The main difference between unleaded and E10 fuel lies in the ethanol content. E10 is a blend of 90% regular unleaded petrol and 10% ethanol, while regular unleaded petrol typically contains up to 5% ethanol. Here are some key points about E10 fuel:

• Compatibility: E10 is safe and reliable, compatible with the majority of petrol-powered cars on the road today. Most cars made from the year 2000 are engineered to run on ethanol-blended fuels.
• Octane Rating: E10 fuel has a lower octane rating than regular unleaded fuel, which can reduce the performance of some cars. For cars that require premium fuels (with an octane rating of 95 or 98), it is better to use those fuels as they are tuned to require high efficiencies from the fuel system.
• Environmental Impact: E10 fuel is considered more environmentally friendly due to its renewable ethanol content.
• Cost: E10 fuel is often the cheapest option at the petrol station, being about three to five cents cheaper per liter compared to regular petrol.

Refueling between E10, regular, or premium unleaded will not cause any damage to the fuel system or engine. However, it is essential to use the right type of fuel as recommended by the vehicle manufacturer to ensure optimal performance and fuel efficiency.

Comparative Table: Unleaded vs E10

The main difference between unleaded and E10 lies in the composition of the fuel. E10 is a mixture of 90% unleaded petrol and 10% ethanol, an alcohol-based fuel made from plant material, such as sugarcane or corn. Here is a table comparing the two fuels:

E10 is generally slightly cheaper than regular unleaded petrol, but the price difference can vary depending on the location. Ethanol has a lower energy content compared to regular petrol, so using E10 fuel may result in slightly worse fuel economy. To determine if your car is compatible with E10, you can check your car's owner's manual, fuel flap, or your state's E10 compatibility checker.