Mercedes Suspends Sales Of India's Flagship E-Class Model In Home Nation — Here's Why

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Mercedes-Benz has stopped sales of the E 350d in Germany as it re-engineers the exhaust gas treatment system as part of a recertification process. 

According to Autocar UK, the E 350d's 3.0-litre twin turbocharged V6 engine's exhaust management system is being re-engineered after Mercedes identified areas which it can change to lower the luxury sedan's nitrogen oxide (NOx) emissions.

Mercedes E 350d Sales Suspended In Germany

A source told Autocar, that Mercedes will be fitting a larger SCR catalyst to the E 350d to help cut down the car's NOx emission levels.

A Selective Catalytic Reduction (SCR) catalyst helps convert nitrogen oxides in Nitrogen gas and water. A gaseous reducing agent (Mercedes uses a compound known as AdBlue which is 32.5 percent urea and 67.5 percent deionized water) is injected into the exhaust gases and is adsorbed into the catalyst.

Mercedes E 350d Sales Suspended In Germany

The larger SCR catalyst provides a larger surface area for the atomisation of the AdBlue solution used by Mercedes which enhances the E 350d's ability to neutralise NOx emissions. Mercedes has also made changes to the injection process of the AdBlue solution to allow the system to run more efficiently.

Mercedes E 350d Sales Suspended In Germany

However, Mercedes is not fitting a larger AdBlue solution tank to the re-engineered E 350d as the reworked system uses the same amount of the reducing solution in each injection as before. The Mercedes E 350d is fitted with a 24.5-litre AdBlue solution tank.

Mercedes E 350d Sales Suspended In Germany

DriveSpark Thinks!

Merc's move to suspend sales of the E 350d may surprise some but it is a welcome move if it means a drop in nitrogen oxide emissions levels. While, there is no news when the India-spec E 350d LWB will get the revised emissions system, Mercedes should act on it as soon as possible.

Read more on: #mercedes
Story first published: Thursday, August 31, 2017, 17:01 [IST]
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