A new diesel scandal is emerging across Europe, the manipulation of AdBlue / Diesel Exhaust Fluid.
AdBlue is a fluid that is inserted into the exhaust of diesel engines, mostly trucks, but also some passenger cars. It cleans the exhaust so it can conform to the latest Euro emission standards. Without AdBlue, it would be as dirty as a 1990s truck.
However AdBlue cost money, reportedly the operating cost is around € 1000 - 2000 per year per truck. Eastern European trucks increasingly use devices that manipulate the engine management system, so it thinks the system is operating as it should, while in reality no AdBlue is consumed. This means they pay a lower toll rate in some countries than they should, and of course they pollute more.
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