City: varies a lot on traffic but worst it gave was 5-6 and best in city 8-9!
Highway: 14-15 depends on speeds but at constant 190 km/h it gave 13.5-14!
The first time I ever checked it was 12.3 in city and on the highway it was 14.8 (both tank full to tank full method). I have done a tank full today and will keep this thread updated.
except corolla and tat safari all of our car are CNG so never looked the mileage .
Tata Safari
11-12 in city on 80% AC . Worst 9-10 on heavy traffic .
15+ on highway with 100% AC
Toyota Corolla H2
11-12 in city with 100% AC(actually we never touch AC button unless its winter)
15+ in highway with 100% on AC