Renewed calls to review motorcycle COE system as prices hit an all-time high Toggle share menu Advertisement File photo of a motorcycle on a road in Singapore. (Photo: Marcus Mark Ramos) 20 May 2021 11:00PM) Share this content Bookmark SINGAPORE: Calls to review the current Certificate of Entitlement (COE) system for motorcycles have cropped up once again as prices hit an all-time high following the latest round of bidding. Advertisement Advertisement COE prices have been rising since the start of this year, hitting S$8,011 in the previous round of bidding earlier this month, which has led to some people having to delay plans to buy motorcycles.