Some issues with CNG are that one, a car that runs on CNG has lower acceleration than a car running on gasoline To read more, click (CNG OLD), two, their is a limited amount of natural gas inside the Earth that we are bound to run out some time, and three CNG when compared to iesel is not a good alternative."All engines produce emissions, and neither diesel nor CNG are exempt," said Schaeffer. To read more click (Diesel).

Other issues for CNG powered cars include the fuel economy increases to about 20 percent more than Diesel trucks, and the lack of stations across the US. A recent study with UPS uncovered that CNG powered trucks were consuming more or getting less miles to a gallon compared to Diesel. To read more go to (UPS).