NGVs Reduce Climate Emissions and Cut Air Pollution

Mobile sources (vehicles and equipment) produce about 40 percent of greenhouse gas emissions in California and about 70 percent of smog-forming emissions, along with toxic diesel particulate matter (PM).

Natural gas vehicles are clearing the air.

  • NGVs’ greenhouse gas emissions are about 20 percent lower overall than those of gasoline-powered cars and heavy-duty diesel vehicles.
  • Cummins Westport’s new ISL G NZ heavy-duty natural gas engine delivers near-zero nitrogen oxides (NOx) emissions. The 8.9-liter engine meets the lowest of California’s three levels of optional low-NOx standards (0.02 g/bhp-hr)—making it 90 percent cleaner than engines meeting the current EPA NOx limit (0.2 g/bhp-hr). It also meets 2017 EPA greenhouse gas emission requirements.

The variety of NGVs on the market means they can reduce pollution and greenhouse gas emissions generated by most vehicle sources, from passenger vehicles and delivery trucks to refuse haulers and port trucks.

We must keep the momentum going.

Because of its huge economy, California is the 12th largest emitter of carbon in the world. And the state’s emissions are costly not only for the climate, but also for public health. According to the California Air Resources Board, 7,300 to 11,000 premature cardiopulmonary deaths per year in California are associated with exposure to fine PM.