I own cultus 2010 .!! Quite satisfied with fuel consumption. Such as
In city :180+km w/o ac on cng (as its efi initial start on petrol so provided a margin around 20 km from mileage)
long route: 200+ w/o ac and 170+ with ac(its 100% gas mileage as there is no initial petrol burned as in city )
mileage provided is with light foot on gas max 4000 rpm
On petrol i have a rough estimate of 400km in about 30L .. Talking about in city mileage
quite satisfied with the fuel efficiency !! Thanks