Algerian here, the most common word used to talk about “gas” here is actually the french word essence, since darja(what people actually speak) is just a weird amalgamate of french, Arabic and Berber that really don’t get along well.
I know this Map just took the official languages, so I don’t wanna call it inacuratd, but just wanted to point this out.
Darja is technically a dialect, even if (at least from my experience) it is barely intelligible to most people from saudi Arabia and such, I often end up speaking English in such cases.
Darja is sorta like Scots in that way tbh, basically a sister language / dialect of Arabic in a similar way to what Scots is for English.