Ram truck owners who purchased 2013-2019 Ram 2500 and 3500 diesel pickups unknowingly bought vehicles with defective emissions systems that only functioned properly during EPA test cycles. Cummins, the diesel engine manufacturer, programmed illegal software “defeat devices” into over 600,000 trucks to reduce nitrogen oxide (NOx) emissions during government testing, while allowing those same trucks to emit significantly higher pollution levels during normal everyday driving. A Ram 2500 owner in California who used their truck for construction work, for example, was driving a vehicle that complied with emissions standards in the lab but spewed excessive pollutants on job sites and highways without their knowledge.
The deception was discovered through years of investigations by the EPA and California air regulators, ultimately resulting in a $2 billion-plus settlement and recall of the affected fleet. Ram and Cummins owners now have access to class action compensation and free repairs, but the settlement reflects a deeper problem: truck owners paid full price for vehicles that failed to deliver on their emissions control promises. For many owners, this settlement represents the only recourse for years of driving vehicles with fraudulently represented engine technology.
Table of Contents
- How Did Cummins Create Defective Emissions Systems That Failed Outside of Test Conditions?
- What Was the Full Scope of the Diesel Emissions Problem Across Ram’s Fleet?
- What Health and Environmental Impact Did These Defective Systems Cause?
- How Much Compensation Are Ram Truck Owners Actually Receiving for the Defective Systems?
- What Were the Government Penalties and Enforcement Requirements?
- The Related EGR Cooler Settlement: Another Defect Affecting Ram Diesel Owners
- What Should Ram Owners Do Now to Protect Their Rights?
- Conclusion
How Did Cummins Create Defective Emissions Systems That Failed Outside of Test Conditions?
Cummins engineered its diesel engines with sophisticated software that could detect when a truck was undergoing an EPA emissions test and activate full pollution controls during those specific conditions. Once the vehicle returned to normal driving, the software downgraded the emissions controls, allowing nitrogen oxide pollution to surge. This is not a manufacturing defect in the traditional sense—it was an intentional engineering decision to make vehicles pass regulatory tests while knowingly exceeding emissions limits in real-world operation. The software was not a bug but a calculated strategy to balance emissions performance with fuel economy and engine performance in a way that would benefit the company’s bottom line.
The difference in emissions between test and real-world driving was dramatic. During EPA test cycles, the affected trucks met legal standards. But once on the road, the same vehicles emitted nitrogen oxides at levels significantly higher than permitted by the Clean Air Act. A Ram 2500 owner driving in a school zone or residential neighborhood was potentially exposing nearby children and elderly residents to pollution levels substantially worse than what EPA regulations allow. Cummins had the technology to prevent this—the company simply chose not to deploy it continuously, reserving full emissions controls for the testing environment where regulators were watching.
What Was the Full Scope of the Diesel Emissions Problem Across Ram’s Fleet?
Between 2013 and 2019, Cummins equipped approximately 600,000 to 630,000 Ram 2500 and 3500 diesel pickup trucks with the defective software. These were not vehicles sold in one region or model year—the defeat devices were installed across multiple model years, affecting customers nationwide. Ram 3500 trucks, which are the heaviest-duty models often used in commercial applications, carried the defect throughout this period, meaning contractors, fleet operators, and individual owners all unknowingly drove complicit vehicles. The scope of this recall is one of the largest diesel emissions cases in U.S.
history, yet many truck owners have still not completed the free repair. Cummins must repair at least 85 percent of the affected vehicles within three years of the settlement, or the company faces additional penalties. For owners who have not yet taken their trucks in for the software repair, there is a window of opportunity—but it is not unlimited. As the three-year deadline approaches, repair appointments may become harder to schedule, and owners who delay could lose access to the $1,000 cash incentive that Cummins is offering to those who complete the repair voluntarily.
What Health and Environmental Impact Did These Defective Systems Cause?
Nitrogen oxides are serious air pollutants that contribute to smog formation and fine particulate matter in the air people breathe. The EPA and health researchers have linked NOx pollution to respiratory diseases, cardiovascular problems, and premature death, particularly in vulnerable populations including children, older adults, and people with existing heart or lung disease. When 600,000 Ram trucks were spewing excess nitrogen oxides during normal driving in neighborhoods, parking lots, and highways across America, they were contributing to air quality degradation in ways that affected public health.
The cumulative impact over years of operation is substantial. A construction crew using a Ram 2500 on a residential job site was not just affecting their own health—the excess emissions were accumulating in the local air shed, contributing to regional pollution levels and potentially violating air quality standards in nonattainment areas where emissions are already a problem. California, which has some of the strictest air quality standards in the nation, was particularly impacted, as were other regions already struggling with smog and ozone pollution. This is why the EPA and California considered the violations serious enough to impose the largest civil penalty in Cummins’ history.
How Much Compensation Are Ram Truck Owners Actually Receiving for the Defective Systems?
The class action settlement reached in February 2025 provides approximately $106 to Ram owners of 2013-2015 models in 16 participating states. While this amount is modest, it represents a formal acknowledgment that owners of these vehicles were harmed by the defective emissions systems. The seventeen named plaintiffs who brought the lawsuit are receiving $5,000 each—a significantly higher amount that reflects their role in pursuing the case. However, the majority of the 600,000 affected owners will receive only the $106 class-wide payment.
Beyond the class action settlement, Cummins is offering an additional incentive: up to $1,000 in cash to owners who complete the free software recall repair (Emissions Recall 67A). This $1,000 comes on top of the free repair itself, which includes engine recalibration and software updates at any Cummins-authorized dealer. For an owner willing to schedule the repair, this means a total potential benefit of roughly $1,106, though the class settlement payment and recall incentive are separate processes with different claim deadlines. The tradeoff is that claiming the incentive requires proactive action—owners must actually bring their truck in for the repair, and the incentive period is not indefinite.
What Were the Government Penalties and Enforcement Requirements?
The U.S. Department of Justice and EPA secured a $1.642 billion civil penalty against Cummins for Clean Air Act violations—the largest civil penalty of its kind at the time of the settlement. Beyond the financial penalty, Cummins is required to repair at least 85 percent of the 600,000-plus affected vehicles, or face even more substantial penalties. This repair mandate is crucial because it forces the company to invest in solutions, though the three-year timeframe creates a practical limitation.
Many owners have not yet completed repairs, and there is a real risk that as the deadline approaches, appointment availability will become constrained. The settlement also includes comprehensive recalls and emissions testing requirements that will extend years beyond the initial repair deadline. However, a critical limitation for owners is that the government’s enforcement actions do not directly translate to compensation for individual consumers. The $1.642 billion penalty goes to the government, not to truck owners. The class action settlement provides the mechanism for owner compensation, which is why participating in that settlement—or filing a claim if you own an affected truck—becomes essential for recouping your losses.
The Related EGR Cooler Settlement: Another Defect Affecting Ram Diesel Owners
Ram diesel owners have faced another separate defect unrelated to the emissions cheating—a defective EGR (exhaust gas recirculation) cooler in certain 2014-2019 Ram 1500 EcoDiesel models that caused engine fires. This settlement is distinct from the emissions class action, but it affects overlapping populations of Ram diesel owners. Owners of affected EcoDiesel trucks can claim up to $3,000 for the engine fire risk, though this settlement addresses a different defect with different model year eligibility than the Cummins emissions recall.
The EGR cooler deadline is May 16, 2026, which is approaching quickly. Owners who have both an affected truck from the emissions settlement and an EcoDiesel with the cooler defect may be eligible for two separate claims. However, the overlap can cause confusion—it is critical to verify which specific defect your truck has and which settlement applies. Some owners have attempted to file under the wrong settlement, only to have their claims rejected because their truck did not meet the eligibility criteria for that particular case.
What Should Ram Owners Do Now to Protect Their Rights?
Ram owners of 2013-2019 2500 and 3500 diesel trucks should take immediate action to verify their eligibility for the emissions settlement and schedule the free repair if they have not already done so. Cummins’ repair program is ongoing, but the incentive structure and the three-year repair mandate create urgency. Owners can check their truck’s recall status on the Cummins website or contact an authorized dealer, and they should have detailed records of their vehicle identification number (VIN) and ownership documentation when filing any claims.
Looking forward, the emissions recall represents one of the largest enforcements against a diesel engine manufacturer in recent history, setting a precedent for how aggressively regulators will pursue similar violations. Other diesel engine manufacturers are now under increased scrutiny, which may lead to additional recalls and settlements in the coming years. For Ram owners, participating in the class action settlement and completing the free repair are the two concrete steps available to recover value from vehicles that failed to meet their representations.
Conclusion
Ram truck owners who purchased 2013-2019 diesel models unknowingly bought vehicles with illegal emissions control software that functioned only during EPA testing. The $2 billion-plus settlement between Cummins and regulators includes class action compensation of approximately $106 for most owners (and $5,000 for named plaintiffs), plus up to $1,000 cash incentives for completing the free software repair. This settlement represents a historic enforcement action against the diesel engine maker and a reminder that even advanced engine technology can be deliberately circumvented to circumvent environmental regulations.
If you own an affected Ram 2500 or 3500 diesel truck from model years 2013-2019, verify your truck’s eligibility, file your class action claim, and schedule the free Emissions Recall 67A repair at a Cummins-authorized dealer to claim the cash incentive. The three-year repair deadline is not indefinite, and appointment availability may tighten as more owners catch up on the recall. Protecting your rights requires taking action rather than waiting for the company to contact you.
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