Local
CNG around 120km for rs.630 without ac, and around 115km for rs.630 with ac
Petrol around 10.3km/L without ac, around 9.5km/L with ac
Highway
CNG around 210km for rs.780 with ac
Petrol around 14.5km/L with ac (about 570km/tank), without ac around 15km/L (about 600km/tank)
With highway speeds of about 115-120km/h. Car is vti oriel pros