Is Unleaded and Petrol the Same?

Unleaded fuel is also known as petrol or gas depending on where you live. ... The term “unleaded” means regular gas, diesel gets its name because it's a completely different type of fuel. Petrol engines run off unleaded fuel by combining gas and air to compress and ignites the engine with a spark.

What is the difference between unleaded and petrol?

The main difference between regular unleaded petrol and premium-branded unleaded is that the latter will have an increased octane rating, also known as research octane number (RON). Creating petrol with a higher octane rating is a costlier process, hence the increased price.

Can I use petrol instead of unleaded?

As a general rule, you can use a higher-octane fuel than is recommended for your car (although it might well have no discernible advantages) however using a lower-octane fuel than recommended could cause engine damage. You can check if your car is compatible with E10 fuel by using the gov.uk online checker.