What model megane have you got? It should be on the centre console just about the handbrake. only made plaques for the F1, Trophy, and the R26.... I think! sure someone can correct me if I'm wrong
yeah it should be in the above place ^^ unless the previous owner removed for some daft reason. it could state it on the sticker on the iside of the door when you open it.
It's not an R26 its a 225 cup by the look of it. Check the inside of the door frame it should have the model written down