In reality, Assoc Prof. Theseira suggested that it might not be a good idea to extend the COE duration. He thinks that the current 10-year length is neither too little nor “probably too long.”
” It basically means that there are sometimes significant differences in vehicle prices between different owners because the cost of operating a car nowadays is locked in for 10 years.” He added that adjusting the COE offer period is very challenging due to today’s lengthy CEE period.  ,
He proposed that shorter, more pliable COEs would likely be better for everyone because they would be more likely to be renewed frequently over the course of the vehicle’s life by the majority of owners or subsequent owners and would have a lower price difference between renewals.
However, a proposal to allow one-year COE leases in addition to the five- and 10-year renewal options was rejected in an August created legislative response.
Acting Minister for Transport Mr. Chee responded to a suggestion from MP Joan Pereira ( PAP-Tanjong Pagar ) by saying that it might “inadvertently amplify the magnitude of the COE cycles, as vehicle owners may use it to time the market by deregistering their vehicles only during lowCOE prices.”
He claimed that when Department prices are high, the supply may become even more scarce, worsening the pattern.
SUSTAINABILITY ADDRESS
Keeping an older vehicle after its first ten years is never a simple way to achieve conservation either. According to Assoc Prof. Theseira, this is due to the existence of” two opposing forces.”  ,
While another contends that for “early scrapping” initiatives just spend the “embedded resources” in existing vehicles, one camp claims that “vehicles may be turned over for more lasting models like electric vehicles sooner.”
Rather, it would be better to address the sustainability issue or the Technical policy goal of having a “more rational system of fleet turnover” by easing the restrictions on the maintenance of older vehicles. He suggested, for instance, extending the PARF return program by 15 or even 20 times.  ,
Additionally, Assoc Prof. Theseira emphasized the potential for focusing on particular problems, such as health and pollution, through laws or taxes and having” a more versatile COE permitting system.”
It would be best if owners faced much more progressive costs in order to decide whether to retain an older car in service, as opposed to having to pay for five or ten years of COE renewal all at once and forfeit the PARF rebate.  ,
A more lasting system of vehicle renewal would likely result from more frequent, routine, and repetitive COE renewals, according to nbsp.
According to him, such a maneuver may also compromise personal costs and sustainability with common concerns like automobile condition, safety, and emissions.  ,