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Automakers Side With EPA in Court Case Over Car Emission Rules

  • Lawsuit seeks to invalidate EPA greenhouse gas emission rules
  • Trade group says rules necessary to facilitate EV transition
Vehicles on Highway 101 in San Francisco, California.

Vehicles on Highway 101 in San Francisco, California.

Photographer: David Paul Morris/Bloomberg

A trade group of major automakers is intervening in a court case about new greenhouse gas emissions rules from the U.S. Environmental Protection Agency -- and this time they are siding with regulators. 

The Alliance for Automotive Innovation, which represents companies such as Ford Motor Co., General Motors Co., Stellantis NV, Honda Motor Co. and Toyota Motor Corp., said it was filing a motion with the District of Columbia Circuit Court of Appeals in support of the EPA. The lawsuit seeks to invalidate the agency’s greenhouse gas emission regulations that automakers achieve a vehicle mileage of 52 miles (83.7 kilometers) per gallon by 2026 across all models they make, up from 40 mpg this year.