Wrong Policies Hamper CNG Demand 

The most important reason behind the downtrend in compressed natural gas demand lies in the government’s wrong policies due to which the number of CNG-hybrid vehicles is dwindling, a member of Iran's CNG Association said.
“A large number of CNG-hybrid cars have been sent to the junkyard over the past decade, but they have not been replaced with new automobiles,” Mohsen Johari was also quoted as saying by ILNA.
The more gasoline-based vehicles are produced, the more CNG demand will decrease, he added.