This car was a hit amongst Careem and Uber drivers for a reason - it has excellent fuel economy, even in local conditions, when driven correctly. 11-12 is not a realistic fuel economy
I had a lot of experience driving one (160k km on the odo) when I was doing my internship last year - the job involved a lot of intercity travel. It simply sips fuel if you keep rpm less than 3k on long routes. Above 110 km/h though, it gulps fuel like an 8th gen Civic (thanks to the short gearing).
As for intercity driving, if people are getting 11-12, then either they are driving in heavy traffic jams all the time, or they are doing spirited driving.