Dodge RAM 2500 and 3500 Emissions

DEFENDANT NAME: Fiat Chrysler and Cummins Inc.
CASE NUMBER: 2:16-cv-14024-TGB-RSW
COURT: U.S. District Court for the Eastern District of Michigan
STATUS: Active
DATE FILED: 11/14/16

Own a Dodge RAM 2500 or 3500 with a Cummins diesel engine?

Your vehicle is polluting at illegally high levels. You may be entitled to reimbursement.

Fill out the form to find out your consumer rights to potential compensation »

Affected vehicles

  • All 2007-2012 Dodge RAM trucks with a Cummins 6.7 liter engine

According to the firm's investigation, Dodge has sold hundreds of thousands of Dodge RAM 2500 and 3500 trucks equipped with Cummins diesel engines that release illegally high levels of NOx emissions. The lawsuit outlines a new “comprehensive body of evidence” illustrating findings of two separate emissions-cheating defeat devices that were placed in the affected RAM trucks with Cummins’ and Fiat Chrysler’s knowledge. If you own an affected Dodge RAM, fill out the form to find out your consumer rights to compensation.

Emissions Cheating Explained

The lawsuit outlines the direct collusion between Cummins Inc. and Fiat Chrysler, stating the two “saw a golden business opportunity, and worked together to build a truck that, at least on paper, met these [emissions] standards, three years ahead of schedule.”

The chassis dynamometer testing revealed a defeat device which allowed the vehicles to pass emissions testing during routine testing conditions, but failed during regular driving conditions. Thus, the vehicle performs differently in a certification test environment (on a dynamometer) than in the real world (PEMS testing), which should not be the case.

A secondary defeat device was found which involves one of the vehicles’ primary emissions control after-treatment technologies, the diesel particulate filter. This is where particulate matter (soot) is collected after the exhaust is treated by the diesel oxidation catalyst and NOx adsorber catalyst. The soot captured by the diesel particulate filter is removed from the filter through a process known as regeneration; the regeneration process can be accomplished either by “passive” or “active” means.

Your consumer rights

Hagens Berman believes that consumers have the right to reimbursement for the premium price they paid for what they thought was an environmentally friendly diesel option. According to the firm's investigation, Dodge charged consumers high prices for vehicles that in no way uphold its promise of eco-friendly diesel.


Hagens Berman is one of the most successful auto litigation law firms in the U.S. and is presently leading nationwide cases against Volkswagen, GM, Mercedes and Fiat Chrysler for use of diesel emissions-cheating software. Our firm’s independent research outpaces even government agencies, and we are the only firm dedicating its own resources to uncovering new instances of fraud. Hagens Berman has also taken on other automakers on behalf of consumers throughout the United States for safety defects and negligence, and your claim will be handled by attorneys experienced in automotive consumer law.


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Case Timeline

05/14/18: Second Amended Complaint Filed

02/21/17: Consolidated Amended Complaint Filed

Download the Complaint