After the Volkswagen Group emission scandal, other automakers have also been on the radar. Mercedes-Benz has voluntarily stopped the sale of the E350d sedan after it found that the AdBlue exhaust gas treatment tanks might get used up between service schedules.
While the larger Mercedes GLE350d and the GLS350d have larger 38.5-litres AdBlue tanks, the E-Class used 24.5-litres with an assumption that a lighter car might use up less catalyst in their working cycles. The engine in question is the OM642 LS 3.0-litre V6 engine which is also offered in India. Changes have been made to the injection design of the catalyst and increased surface area for the atomisation to neutralize the NOx gases. This will result in optimum consumption of the AdBlue tanks resulting in slower depletion.
Additionally, the SCR catalyst tank size will also be increased to ensure that in no situation the AdBlue would be emptied between services. While Mercedes-Benz Germany hasn’t put a timeline to the re-introduction of the E350d, they have said that it will take a few weeks. The emission standards in India are at a lower level than the European regulations and hence there is a chance that it might not result in any emission issues.