Ford Motor Co
Ford manipulated the emissions system in violation of federal requirements and the affected trucks released twice the legal limits of emissions during normal driving, the lawsuit claimed.
A Ford spokesman said the automaker would issue a comment shortly.
The law firm representing the owners, Hagens Berman, has launched lawsuits in the last year against General Motors Co
In the tests Ford conducted on the F-250 and F-350 vehicles, "emissions are routinely as high as five times the standard," the lawsuit said, quipping that the trucks should bear the moniker "Super Dirty."
The lawsuit, filed in U.S. District Court for the Eastern District of Michigan, also named German auto supplier Robert Bosch GmbH [ROBG.UL] as a defendant.
In a statement Wednesday, Bosch said allegations against the company "remain the subject of investigations and civil litigation" and it takes allegations of diesel software manipulation "very seriously."
Last year, Bosch agreed to pay $327.5 million to U.S. owners of Volkswagen AG
More recently, German prosecutors investigating whether carmaker Daimler AG
Volkswagen has struggled to draw a line under its diesel emissions scandal, which broke in the United States in 2015 and has cost the German company as much as $30 billion.
A U.S. Environmental Protection Agency spokeswoman did not immediately comment on the lawsuit against Ford.
In afternoon trading Ford shares were down 0.6 percent.
(This article has not been edited by Zeebiz editorial team and is auto-generated from an agency feed.)