That is not a reliable method of testing fuel economy; needle near 'e' may mean anything from 5 liters to 10 liters.
At the next refill, fill it to the brim, and then reset the trip meter, then drive it for a few hundred kilometers. At the next refill, divide the number of liters filled by the number on the trip meter. Note down the fuel consumption. Repeat the steps for five tanks or more; this way you will reduce the error in the measurement. For that model, anything around a combined 12 km/l or more is good imo.