The Preferential Additional Registration Fee (PARF) rebates for cars will be reduced by 45 percentage points. SINGAPORE: Rebates for scrapping cars before 10 years will be reduced and the cap lowered, given the growing prevalence of electric vehicles (EVs), Prime Minister Lawrence Wong announced on Thursday (Feb 12). The government provides a Preferential Additional Registration Fee (PARF) rebate for cars that are deregistered before their 10th year. This will be reduced by 45 percentage points.