Mostly fantacies of 13 in city n 18 on highway are achieved with lighter foot ,no riv,no force, tortoise crossing, driving like cool n cold minded 70 years old person with bitter tolerance.
Not only grande even ivnt seen any Corolla xli or gli or altis1.6 doing more than 750 km in a petrol tank 55litre except ppl who loves driving within range of 60/90 km per hour.
In normal range but zigzag drive ,bit fast n slow mixed drive heavy foot n Lightfoot in city one tank petrol gives you between 500/540 km n on highway it gives u milage between 640/680 km maximum. On highways 570/590 km ka baad apka reserve lag jata ha jisma amuman 7 litre hotay ha.
Very practical.