The automotive industry in the US has outperformed the national greenhouse gas emissions standards for the second consecutive year.
The US Environmental Protection Agency (EPA) said cars in 2013 emitted 272 grams per mile on average – 12 grams fewer than the requirements.
That meant vehicles were 1.4 miles per gallon more efficient than the EPA’s standards.
In 2012, cars beat the regulations by 11 grams per mile, the EPA said.
EPA Administrator Gina McCarthy said: “Automakers are racing to meet our goals. The American auto industry has never been stronger, we’re creating jobs here in the US, selling cleaner cars here and overseas and consumers are really benefiting from the innovations spurred by these standards.”
EPA’s greenhouse gas emissions standards cover light-duty vehicles from 2012 to 2025. They are projected to save 12 billion barrels of oil and cut six billion metric tons of greenhouse gases over the lifetime of vehicles sold during those years.