Top model slower than IFA

There are two ways for commercial vehicles to meet Euro V standards. One is the recycling of emission gases (EGR), while the other is based on selective catalytic reduction (SCR), where a liquid called AdBlue is used. The ODB2 diagnostic system will not only warn drivers when they forget to fill up their AdBlue tank, but will sanction such negligence by drastically reducing power output, making the vehicle slower than an IFA.