why it’s common to have 87-octane gasoline in the US but it’s almost always 95-octane in Europe?

Question

why it’s common to have 87-octane gasoline in the US but it’s almost always 95-octane in Europe?

In: 1441

Answer 1

There are two different tests used to measure octane level, RON and MON (they test using different conditions). MON is usually about 10 lower than RON. European pumps show the RON number, US pumps show AKI which is the average of the two so it will be lower for the same fuel

https://en.wikipedia.org/wiki/Octane_rating