Mercedes-Benz has reached a massive multi-million-dollar settlement over claims that it cheated on diesel emissions tests and misled consumers.

The details: The settlement, which includes Mercedes-Benz USA and Mercedes-Benz AG, requires the automaker to pay roughly $150 million to multiple states for equipping its diesel vehicles with illegal “defeat devices” so that they appeared to meet emissions requirements.

  • $120 million will be paid to the fifty state jurisdictions that took part in the investigation.

  • Roughly $29 million could be suspended and potentially waived pending Mercedes’ completion of a consumer relief program.

  • Another 40,000 Mercedes vehicle owners could receive $2,000 per car if they install approved emissions modification software and an extended warranty.

Why it matters: For dealers, another high-profile emissions case reinforces how quickly trust and residual values can be damaged when compliance fails—especially on “green” or premium products. It’s a reminder that retailers will be on the front lines answering owner questions, handling updates and buybacks, and defending brand reputation long after the settlement headlines fade.

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Between the lines: Concerns raised with Mercedes’ use of the “defeat devices”—which were installed in 211,000 model year 2008–2016 diesel passenger cars and vans—underscore the depth of the allegations.

  • The complaint alleges that the defeat devices enabled vehicles to far exceed many of the impacted states’ limits of NOx emissions, a harmful pollutant that causes respiratory illness and contributes to the formation of smog.

  • The allegations further state that Mercedes marketed the vehicles to consumers as “environmentally-friendly” and in compliance with applicable emissions regulations.

What they’re saying: “This significant outcome demonstrates that no corporation—no matter how powerful—is above the law when it comes to protecting our environment and our consumers,” stated Maryland Attorney General Anthony Brown.

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