In this study the methods suggested in the standards ISO/TS 15311-2 / ISO/IEC 24790 and the method suggested from FOGRA (M-Score) to measure print mottle were conducted and compared with visual evaluations. The aim was to understand if one of them is more adequate for evaluation of mottle in inkjet print on coated cardboards and if pre- and post-treatments on the cardboards have an influence on print mottle.<br/> The measurements showed that the first method has a higher accordance with visual evaluations. A second finding was that a pretreatment with primer and post treatment with IR-radiation to improve ink adhesion and drying can also reduce print mottle.