We are usually asked about:

Do I get the same fuel mileage on CNG?

A. With today’s technologies the mileage received from CNG converted vehicles will be similar to their gasoline and diesel equivalent or close.

Will I have a power loss?

It depends if we are talking about gasoline to CNG or Diesel to CNG. Most CNG conversions in heavy duty diesel to CNG will have a power loss but the fuel savings will make up for it. Aspirated systems may have more power loss than Sequential since they are less tunable. Some latest technologies for CNG conversions have no power loss. Let us know the engine type and application you are interested in converting and we will let you know if there is any power lost, if any.

When will I be able to make back my investment of the conversion?

Yes you will be able to make back the investment in CNG conversion based on your fuel savings and enjoy continues fuel savings after ROI.  The incremental difference between CNG and gasoline /diesel on every gallon burned and how much of it you consume per year are the main factors determining ROI period for your fleet. For heavy fuel users friendly financing can assist with making the project economically beneficial to the fleet from day one. At NGV Motori USA we have helped to structured the deal the way that our customers get their conversion 100% financed and the amount of fuel savings is greater per month is greater than monthly payments. Please give us a call to assess your fleet savings potential.

How do you fuel a natural gas vehicle?

It is similar to the way you fuel any car or truck. The dispenser looks about the same, but the nozzle is different. Drivers can be easily educated on how to fill a CNG vehicle. Because natural gas is under pressure, the storage systems must to designed so that no fuel escapes when the vehicle is being fueled. Natural gas nozzles lock onto the receptacles, and form a leak-free seal, similar to the coupling on an air compressor nozzle. The receptacles are designed so that when the nozzle is removed the gas is prevented from escaping.

How long does it take to fuel a natural gas vehicle?

There are basically two types of fueling equipment for CNG vehicles – fast-fill and time-fill. In fast-fill, the combination of a large compressor coupled with a high-pressure storage tank system, called a cascade, fills the tank in about the same amount of time it takes to fuel a comparable petroleum vehicle.

A time-fill system does not have a storage system and has a much smaller –and less expensive– compressor. It typically refuels CNG vehicles overnight at a rate of about one gallon per hour. Time fill works for vehicles that remain idle overnight, such as refuse trucks and school buses

There are also home refueling options for individuals that own a CNG powered vehicle and are looking for the convenience of being able to fuel at home. The units connect to a residential gas line and typically hung on a garage wall. They can fuels a single vehicle at the rate of slightly less than a half a gallon per hour.

How is the fuel stored in the vehicle?

Most NGVs operate on compressed natural gas so the fuel takes up less space. CNG is stored on board vehicles under high-pressure (3,000-3,600 pounds per square inch) in tube-shaped cylinders that are attached to the rear, top or undercarriage of the vehicle. The cylinders meet very rigorous safety standards. They are made of high-strength materials designed to withstand impact, puncture and, in the case of fire, their pressure relief devices (PRDs) provide a controlled venting of the gas rather than letting the pressure build up in the tank.

Natural gas may also be stored on-board in the form of liquefied natural gas or LNG. To become LNG, natural gas must be cooled to –260 degrees Fahrenheit. The biggest advantage of LNG over CNG is space requirements. LNG requires only 30 percent of the space of CNG to store the same amount of energy. In order to keep the LNG cold, LNG is stored on-board vehicles in thermal storage tanks.

Are NGVs safe?

Absolutely! The cylinders that hold the compress natural gas are significantly stronger than gasoline tanks. They have withstood impact and bonfire testing and meet or exceed U.S. Department of Transportation safety standards. Even in the unlikely event of a leak, CNG will not form combustible pools on the ground as other fuel do. Because natural gas is lighter than air, it will rise and dissipate if released.

Are NGVs cleaner than gasoline or diesel vehicles?

NGVs are the cleanest of any vehicles in commercial production today. In fact, NGVs produce 5 percent to 10 percent of the emissions allowable by today’s most stringent standards. Dedicated NGVs can reduce exhaust emissions of carbon monoxide (CO) by 70 percent; nitrogen oxides (NOx) by 87 percent and carbon dioxide (CO2) by 20 percent below those of gasoline vehicles.

Are there any federal incentives or rebates available?

Yes, certain federal tax incentives and rebates are available through government agencies:
Learn more about State and Federal incentives here:

Didn’t find the answer?

If the question you have is a genetic to CNG industry we encourage you to do a research and find the answer on one of the numerous websites providing detailed info about use of natural gas in transportation. If you have a question regarding your fleet conversion to CNG please do not hesitate to use the form below or call us directly for assistance. We love to help you to get your CNG fleet going. If further assistance needed, we have a strong nationwide presence and conversion partners all over the United States, Canada and Mexico and would be glad to put you in contact with one of your local highly qualified CNG conversion outfitter.

Send questionclear

Our skills:

Years in Business - 34 years
Countries Have Offices in - 20 Countries
HD CNG Technology Development - 26 years
US Market Development - 6 year

Testimonials:

  • NGV Motori got their diesel to CNG conversion technology perfected!

    Lynn Lyon
    Pioneer Natural Resources
  • NGV Motori has being on a leading edge of the CNG fueling industry and the company posses one of the most extensive knowledge bases and experience.

    Dr. Kenneth Morgan
    TCU Energy Institute
  • Charles Stone
    Transportation Director Former President of the Texas Association for Pupil Transportation

Educational videos: