I got combined economy of 12.5kmpl and 14.5kmpl after 2 runs in highway(>200km) plus Colombo( >150).However according to display it was 15kmpl and 18.5kmpl.I think it’s alright.Anyway people often say they get 25kmpl in highway I don’t know it’s actually possible?I think it’s just according to your cars display not by distance vs fuel calculation