The series around SJM
| Series | First open for bidding |
|---|
| SJJ | July 2008 |
| SJK | August 2008 |
| SJL | September 2008 |
| SJM | October 2008 |
| SJN | November 2008 |
| SJP | January 2009 |
| SJQ | February 2009 |
Also from 2008: SJD, SJE, SJF, SJG, SJH, SJJ, SJK, SJL, SJN.
From LTAโs list of car prefixes on DataMall: from SDQ (December 2001) on, the month a series first opened for bidding; before that, the month it came out. Every series is on the car plate page, and in one CSV.
Questions
What year is an SJM car plate?
The SJM series first opened for bidding in October 2008. It was the newest series for 1 month, until SJN in November 2008. So a car with an SJM plate was registered in October 2008 or later: a number can be bid for after its series opens, or kept from an older car, so the car can be newer than its plate, never older.
How old is a car with an SJM plate?
No older than 18 years and 1 month (in November 2026), counted from October 2008, when the series first opened for bidding. It can be younger: the plate only says when the number came out.
When does an SJM carโs COE end?
A COE lasts 10 years from registration, so a car registered in October 2008, when the series first opened for bidding, had its first COE run to about October 2018; one registered later, later still. So an SJM car still on the road has had its COE renewed for 5 or 10 more years at the Prevailing Quota Premium: see the latest COE prices and PQP, and the PARF and COE rebates for scrapping it.
What comes after SJM?
SJN, which first opened for bidding in November 2008, then SJP in January 2009. Before SJM came SJL (September 2008).
What letter does SJM 1234 end in?
SJM 1234 Z. The last letter is a checksum worked out from the prefix and the number: SJM 1 K, SJM 88 K, SJM 8888 R. Check any SJM plate.