Within the last years, a step change of polyolefin (PO) business towards PO recycling has taken place as major PO companies acquired shares within the recycling industry. At the same time, the European Union is publishing new legislations with regard to the amount of plastics being recycled. One example is the legislation on packaging waste “2018 Circular Economy Package” http://ec.europa.eu/environment/circular-economy/index_en.htm where by 2030 all plastics packaging should be recyclable. Hence, the major focus in PO recycling is to make the recycling more efficient. This can be done by using better pre-sorting measures at the recycling units. At the same time, efficient compatibilization is needed to improve the final properties of the PO recyclates and broaden their field of applications. In this work, different types of compatibilizers are tested in terms of their efficiency in improving the property profile of PO recyclates. As compatibilizers everything from commercially available additives such as processing aids or plastomers to polypropylene impact copolymers (IPC) is considered. The IPCs consist of PP matrix and dispersed ethylene-propylene rubber (EPR) domains. To check the effect of compatiblization, atomic force microscopy (AFM) images of injection moulded specimens are investigated. As shown in a previous study (Kahlen, Gahleitner, ISPAC conference 2017, poster presentation), the addition of up to 15 wt% of an IPC to a PO recyclate can significantly change the morphology of the EPR phase. While in the pure PO recyclate (left picture) the continuous phase is PE (white phase), the more IPC is added to the recyclate, the more PP becomes the dominant phase. This phase structure effect is also reflected in the mechanical behaviour of the materials. For this purpose, mainly strain at break and impact strength are considered