I want to share my experience to all PW
I have Alto VXR CNG+AC 2010 total 5500 KM driven, the average on CNG in one celender was 100-110 on full AC and 120-130 without AC.
Later on, a friend of mine advised me some tips (Low RPM with gear shiftiting at low speed) as below
1st gear 0-less then 20 KM/PH
2nd gear 20-30 KM/PH
3rd gear 30-40 KM/PH
4th gear 40-50 KM/PH
5th gear 50- as much as can KM/PH
Plz keep in mind that RPM should be less and engine sound must not be higer as well as keep one CNG station (prefered good pressure) for gas filling all the time.
belive me Now the average is very tremendously and my car gives me 150 KM (with 20-25% milage on AC). may be there is some problem in intitally but after some time you will be used to.
Low RPM is good for engine and for fuel average as well and may be this thread will be fruitful for some one.
Now all experts are requested to correct me if I am doing wrong.