I got my hands on 2018 1.5 AT Standard variant with tires upgraded to 185/65R15 instead of 175/65R15 65,000 kms driven.
When i got the car it was doing 7.5/8 KMPL.
I got its basic service, Tune-up done and changed the gear oil, Later realized it was always ready to jump forward on gear (Rpms were high on idle) got it recalibrated.
I've only managed to get 10.5/11 KMPL
On similar route Cultus manages 14/15.5 KMPL.
One thing I've noticed is if I drive City without AC the average on meter drastically changes.