here are my findings for the difference in cost/km while running a mehran on petrol vs cng
(running Suzuki Mehran 2007 with 13 inch alloy rims n 175/60/R13 tyres with AC in City)
CNG (approx PKR 3.5/KM)
I was getting 50WL tank filled for pkr 350 and lasted 100-110 km with AC in city
I have disconnected CNG by removing venturi+pipe, cng kit is still installed and 50WL EKC tank is still lying in the boot. I got petrol tank filled and ran the car 100 KM
difference on petrol
PETROL (Approx PKR 3.75/KM)
got a refill again after running 100 km and refill costed only PKR 375
Now i plan to remove the cng tank and fit a proper phatta in boot so that my kenwood 718 pairs can be fitted properly out of the box into the phatta. i have a 2-ch chinese amp.