The truth or nothing! This is what the new advertising motto for Mercedes should sound. Daimler confirmed its vehicles fully comply with applicable regulations and their emissions are real.
Media reports and publications by various institutes and organisations have repeatedly attempted to demonstrate that various automobile manufacturers illegally influence their vehicles’ emission values.
Current allegations refer to measurements performed by the Dutch Organisation for Applied Science Research (TNO) on a Mercedes-Benz C220 CDI. The measurement results were discussed by representatives of Daimler AG with the TNO and were classified as plausible by the experts there.
Regarding the allegations, Mercedes has issued the following press statement:
“Owing to various misinterpretations of the TNO report by parties, we would again point out that it is common that deviations occur in real driving conditions compared with the certified norm values.
That is no reference to manipulation; they result primarily from conditions different to the legally-prescribed laboratory conditions, for example when ambient temperatures differ, the vehicle is operated under different loads or additional equipment such as air-conditioning or seat heaters is switched on.
Furthermore, the exhaust gas-aftertreatment is controlled flexibly within the permissible limits, depending on the particular operating state, in order to ensure engine protection and safe operation of the vehicle. It is thus possible to meet the statutory requirement of ensuring full functionality of the exhaust gas aftertreatment system up to at least 160,000 kilometres. These facts were accepted and confirmed in full by the TNO.
We absolutely reject speculation or interpretation that possible deviations between test-bench measurements and measurements made during real driving conditions can only be explained by manipulation.
No defeat device, i.e. a function that improperly restricts the effectiveness of exhaust-gas aftertreatment, is used by Mercedes-Benz. Neither do Mercedes-Benz vehicles have a function that automatically recognises when a vehicle is being tested.”