Stichting Emission Claim Finds New Evidence of Emissions Cheating in Mercedes Diesel Vehicles Already Recalled by EU and “Fixed” by Daimler

Dutch foundation representing thousands of Dutch citizens impacted by Daimler’s emissions-cheating defeat devices presents expert testing identifying further proof and continued violations up to twice the legal emissions standard

AMSTERDAM – Stichting Emission Claim, a Dutch foundation representing the rights of Dutch citizens against Mercedes’ parent company, Daimler, in the face of rampant emissions-cheating has revealed new evidence of both existing emissions violations and new manipulation being carried out by the automaker, emitting up to twice the legal emissions standard in its vehicles.

Alleged fixes applied by Mercedes to its vehicles arguably were not only inadequate but may have further degraded vehicles’ performance relative to pre-fix specification, according to the foundation.

Rigorous testing conducted by Stichting Emission Claims of two models – Mercedes’ ML350 and GLC220 – revealed that across 11 separate tests, the ML350 polluted at levels twice the legal standard limit for nitrogen oxide (NOx) emissions, even after Mercedes’ claimed to have fixed the emissions levels detected by prior investigations.

Dutch citizens who own or lease the affected models found to continue to be incompliant with emissions regulations are encouraged by Stichting Emission Claim to sign up to join the action against Mercedes.

“This is an outrage,” said Christoph Jeloschek, lead lawyer for the foundation. “This evidence shows Mercedes implemented a phony fix to its illegally polluting cars while drivers unknowingly continue to pollute the air with excessive, toxic levels of emissions. Mercedes continues to deceive consumers and harm the environment.”

“Mercedes can’t by any stretch of the imagination call these dirty diesels ‘fixed,’” he added.

The newly discovered emissions violations come after a recall from the EU, lawsuits in multiple jurisdictions and a $700 million settlement in the United States. Stichting Emission Claims’ findings conclude that Daimler Group continues to try and circumvent existing EU regulations by installing software designed to manipulate emissions output.

Mercedes’ New and Continued Emissions Cheating Explained

In 2014, the EU enacted the Euro 6 emissions regulations and added a stricter NOx emission limit requiring manufacturers to use emission-reduction aftertreatment. To adhere to the limits of EU law, manufacturers started using a technology called selective catalyst reduction (SCR), a software that injects a consumable liquid into the exhaust gas stream, which then enacts NOx by reducing it and turning it into nitrogen and water. SCR is generally known for being able to achieve greater than 90% NOx reduction efficiency when used correctly and injected in proportion to the NOx entering the system, according to the foundation.

The foundation’s findings uncover an “alternative dosing algorithm” software which increases the output of NOx. The new cheating software has been found in models that had already been subject to a mandatory recall by the German Federal Motor Transport Authority (KBA) and which had allegedly been fixed by Mercedes after it was found in 2014 to have been putting the environment and European Union (EU) citizens lives at risk with illegally high levels of emissions in its BlueTEC line of diesel cars, according to Stichting Emission Claims.

The Stichting’s research shows what the foundation deems blatant continued emissions cheating by Daimler. The foundation’s research revealed the following:

  • Eleven individual tests including Real Driving Emissions (RDE) testing, were run on the ML350. The average results of these tests reveal that the ML350 is more than twice the legal emissions standard during RDE driving dynamics and exceeds the standard by roughly 75% across all Portable Emissions Measurement Systems (PEMS) testing.
  • Overall NOx emissions of the ML350 exceed the Euro 6 standard by 75%. Emissions test results were as high as 205 mg/km. The ML350 operates with an average SCR efficiency of approximately 80%, significantly below the expected efficiency of any SCR system.
  • The ML350 also exhibited unique modulation of the SCR system which caused efficiencies to drop to as low as 20% for up to a couple minutes and allow NOx emissions to increase up to 450 mg/km.
  • Seven individual tests were run on the GLC220 which exceeded the emission standard by 20% during RDE driving dynamics.  

“Our foundation has conducted rigorous and exhausting testing, and Mercedes models failed the test,” said Jeloschek. “Further testing has provided further proof that Mercedes is guilty of emissions cheating and deceiving consumers and authorities by failing to remove the existence of a defeat device even despite the recall authored by the KBA.

Despite the continued fines and litigations against Daimler, the automaker has continuously denied the existence of cheating devices in cars sold in United Kingdom and Europe. This further development uncovered by the Stichting Emission Claim foundation adds weight to an already strong position against Mercedes in that the affected Mercedes vehicles may well, as a result of the defeat devices and the alleged ‘fix’, have incurred amongst other things, increased operating costs and the ‘fixes’ altering its maximum power output, worsening the user-experience of the vehicle.


Media Contact
Christoph Jeloschek and Steve Berman are available for interviews and can be reached at [email protected].

About Stichting Emission Claim
Stichting Emission Claim offers Dutch citizens who bought or leased an affected vehicle equipped with an illegal manipulation device access to justice to recover for the damages they have experienced. The foundation’s mission is to hold accountable those automakers who continue to ignore environmental and other laws designed to protect consumers, our environment and our safety with impunity. See Emission Claim Foundation for further details.  

The foundation supports the work of Dutch and European legislators who have introduced emission-limiting legislation with an important goal: the protection of our environment and our health as excessive nitrogen pollution impairs our ability to breathe and is a cause of climate change. Join us in this collective action so that Mercedes-Benz’s behavior is properly curbed.

Media Contact
Ashley Klann
[email protected]


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