Several Problems on the Implementation of Fiduciary Guarantee Execution on Four Automotive Financing Companies after the Constitutional Court Decision Number 18/PUU-XVII/2019 Ning Adiasih 1 , Ho Lioeng Min 2 , Suci Lestari 3 {ning.a@trisakti.ac.id 1 , lioeng.min@gmail.com 2 , sucilestari@trisakti.ac.id 3 } Universitas Trisakti, Jakarta, Indonesia 1,2,3 Abstract. The execution of a fiduciary guarantee on the vehicle financing practice often creates problems even though the position of the recipients of the fiduciary guarantee is strong, as mentioned in Indonesia’s Law No. 42/1999. If the agreement is broken, the execution of the fiduciary guarantee can be carried out in three ways: (1) the execution through the executorial title, (2) the sale of the object of the fiduciary guarantee, and (3) the sale under the hand based on an agreement between the giver and the recipient of the fiduciary. After the Constitutional Court Decision No. 18/PUU-XVII/2019 is issued, there are additional provisions, namely agreement on the broken promise which needs to be included and voluntary submission concerning the object of fiduciary. This study was conducted on four automotive financing companies after the Constitutional Court Decision No. 18/PUU-XVII/2019, whose implementation was different. The type of this study was normative legal research with a descriptive approach. In addition, the data used were secondary data which were analyzed qualitatively. The results of the study can be concluded that (1) there are different interpretations of the regulations of the execution of fiduciary guarantees, (2) there are requirements that are difficult to fulfill, and (3) there are contradictions in several court decisions. The recommendations offered are that technical guidelines need to be made to support legal certainty in the execution of fiduciary guarantees. Keywords: fiduciary guarantee; execution 1 Introduction A financing company is a financial service institution that is often contacted when people need financing facilities for purchasing automotive vehicles. The current operation of the financing company’s business refers to the Financial Services Authority Regulation No. 35/POJK.05/2018 concerning the Implementation of the Financing Company’s Activities. In accounts payable activities, as the case mentioned previously, it often requires a handover of debt guarantee from the party borrowing money (the debtor) to the party lending money (the creditor). The debt guarantee can be in the form of (1) material guarantee, which gives LePALISSHE 2021, August 03, Malang, Indonesia Copyright © 2022 EAI DOI 10.4108/eai.3-8-2021.2315068