By the time bidding ended on March 29 at 4pm, COE for cars up to 1600cc and 130bhp ended at a four-month high of $51,765, up from $50,789 previously.
COE for cars above 1600cc or 130bhp also hit a four-month high of $54,000, up from $53,300.
Open COE, which can be used for any vehicle type but ends up mostly for bigger cars, closed likewise at $54,501, up from $53,001.
Motorcycle premium zoomed to a new record of $8081, up from $7483, itself a record.
Commercial vehicle COE bucked the trend by ending at $47,036, down from $49,002.
Industry observers said a rush to beat new emission standards coming onstream in September as well as a revised green incentive scheme in January fuelled car buying.
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