ADAC testing finds new diesel vehicles cleaner than required; Euro 6c and 6d-Temp automobiles effectively beneath the permissible NOx limits

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In Germany, testing by ADAC (Allgemeine Deutsche Automobil-Membership eV) has discovered that each one the Euro 6c and 6d-Temp automobiles which were measured on the highway to this point meet a lot stricter necessities nitrogen oxides (NOx) than required by the EU.

Within the take a look at, the vehicles weren’t solely considerably beneath the tolerance worth of 168 mg/km for diesel vehicles, which is utilized within the highway take a look at (RDE technique), but additionally beneath the present Euro 6 WLTC restrict of 80 mg/km.


Supply: ADAC.

In December 2018, following the complaints of the cities of Paris, Brussels and Madrid, the European Union Courtroom of Justice annulled the tolerance values for highway checks issued by the EU Fee.

The tolerance values—conformity elements (CF)—had been set by the European Fee as a way to take into consideration the technical and statistical inaccuracies of the RDE measurements. Thus, for Euro 6 diesel automobiles, a NOx restrict of 80 mg / km was established for the take a look at bench measurements.

Nonetheless, to make sure that the automobiles can even compete within the RDE process, the Fee adopted a compliance issue of two.1. In keeping with this, new type-approved diesel passenger vehicles might emit NOx for a transitional interval from September 2017 (from September 2019 for newly registered passenger vehicles) of 168 mg/km as a substitute of 80 mg/km.


Our measurement outcomes present that diesel know-how can have a future. Ought to the EU Fee revise the consistency issue, then shoppers have to be assured that Euro-6d (TEMP) automobiles already bought or provided on the market take pleasure in legit expectations.

—ADAC Vice President of Engineering Thomas Burkhardt

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