Certificate of Entitlement (COE) prices for cars continued to rise across the board in the latest bidding exercise on Wednesday. The open category, which is mostly used for big cars, saw the biggest increase - up S$4,489 to close at S$84,590. Premiums for big cars reached another high, rising S$1,697 to S$83,700 at the close of the bidding exercise. COEs for commercial vehicles moved up S$2,478 to end at S$53,989. COE prices for small cars rose S$2,000, closing at S$58,501. The only drop was seen in motorcycles, which dipped S$104 to S$1,896.