Yes, you can use methane gas to power your car, but it requires significant vehicle modifications. The most common and practical form is Compressed Natural Gas (CNG), which is primarily composed of methane. You cannot simply pour liquid methane into a standard gasoline car. Instead, vehicles must be specially manufactured as Natural Gas Vehicles (NGVs) or converted by a certified professional with the installation of a high-pressure fuel tank, fuel lines, and a different fuel injection system.
Is it Feasible for the Average Driver?
For most people, converting a gasoline car to run on CNG is not cost-effective. The conversion kit and installation can cost several thousand dollars. It's more practical to purchase a factory-built NGV, like certain models of the Honda Civic that were offered in the past. The primary appeal is cost savings; CNG often costs significantly less per gallon-of-gasoline-equivalent (GGE) than gasoline. It also burns cleaner, producing fewer greenhouse gases and pollutants.
However, the major drawback is refueling infrastructure. Public CNG stations are not nearly as widespread as gasoline stations, which can make long-distance travel challenging. You may need to install a Home Refueling Appliance (PHRA), which is another substantial upfront investment but allows you to refuel overnight using your home's natural gas supply.
Here is a comparison of key factors:
| Factor | Compressed Natural Gas (CNG) | Gasoline | Notes |
|---|
| Average Cost per GGE | $2.50 | $3.80 | Prices fluctuate regionally. |
| CO2 Emissions (tailpipe) | ~25% lower than gasoline | Baseline | Contributes to lower carbon footprint. |
| Public Refueling Stations (U.S.) | ~900 | ~145,000 | CNG infrastructure is limited. |
| Vehicle Availability | Limited OEM models (e.g., past Civic) | All models | Fewer new NGV choices for consumers. |
| Typical Driving Range | 250-400 miles | 300-450 miles | Range is comparable on modern vehicles. |
| Conversion Cost | $6,000 - $12,000 | N/A | High initial investment for aftermarket kits. |
Ultimately, using methane/CNG is a viable option best suited for fleets with centralized refueling (like buses or municipal vehicles) or for dedicated individuals with access to fueling and a long-term plan to recoup the high conversion costs through fuel savings.
