Cummins to Pay Record $1.675 Billion Penalty for Clean Air Act Violations

The engine manufacturer allegedly installed emissions defeat devices on hundreds of thousands of engines, leading to the largest civil penalty ever under the Clean Air Act.

Cummins Inc., a major engine manufacturer, has agreed to pay a $1.675 billion penalty to settle claims that it violated the Clean Air Act by installing emissions defeat devices on hundreds of thousands of engines.
The Justice Department alleges that Cummins installed defeat devices on 630,000 model year 2013 to 2019 RAM 2500 and 3500 pickup truck engines, and undisclosed auxiliary emission control devices on 330,000 model year 2019 to 2023 RAM 2500 and 3500 pickup truck engines.
The penalty is the largest civil penalty ever secured under the Clean Air Act, and the second largest environmental penalty ever secured.
Cummins has stated that it does not admit any wrongdoing and has seen no evidence that anyone acted in bad faith.
The company expects an additional charge of about $2.04 billion in Q4 2023 to resolve these and other related matters involving about one million pick-up truck applications in the U.S.

U.S. Department of Justice