I had a cultus vxri, bought in 2009, sold after 20k kms owing to the AWFUL build quality.
However, one thing i LOVED about the car was the averge.
I got between 130-160kms on a full tank of CNG, but my driving is mostly on Shahrah e Faisal early morning and late evening.
On proper highway drives, i hit 190kms myself once, but that was almost completely in fifth gear, on a downward slope and with the wind behind me
A friend now has a 2010 vxri, and he gets 120-130ish locally, which is completely fine for a properly maintained and tuned car.
190 is a bit of a stretch in normal driving conditions.