Hi Chan Peng Fay, thank you for your question. For cars, 5 years COE renewal can only be done once which means, at the end of the 15th year, car owners only have a choice to scrap the vehicle. You can check more details regarding COE Renewal through here: https://onemotoring.lta.gov.sg/content/onemotoring/home/owning/coe-renewal.html