A new government report says gas mileage for new vehicles dropped and pollution increased in model year 2019 for the first time in five years.

The Trump administration rolled back ambitious Obama-era vehicle mileage standards March 31, raising the ceiling on damaging fossil fuel emissions for years to come and gutting one of the United States’ biggest efforts against climate change.

President Donald Trump said he will revoke California’s authority to regulate greenhouse gas emissions from autos, confirming a widely-anticipated move that will escalate the ongoing dispute between his administration and California.

Volkswagen AG will revise fuel economy labels on several gasoline-powered models and pay nearly $100 million to drivers after an investigation discovered software that could optimize efficiency during government tests but not during real-world driving.

The U.S. Chamber of Commerce called on the Trump administration and California officials to find a middle ground on automobile efficiency standards that federal agencies plan to slash, warning of “potentially dire consequences” without a workable compromise that continues to improve fuel economy.

Four major automakers have reached a secret deal with California to increase gas mileage and greenhouse gas emissions standards, bypassing the Trump administration’s plan to freeze standards at 2021 levels, according to two people briefed on the matter.

WASHINGTON — The Environmental Protection Agency privately challenged the Trump administration’s rationale for freezing Obama-era mileage standards, saying the proposal actually would increase U.S. highway deaths.

WASHINGTON — The Trump administration says people would drive more and be exposed to increased risk if their cars get better gas mileage, an argument intended to justify freezing Obama-era toughening of fuel standards.