The series around SGN
| Series | First open for bidding |
|---|
| SGK | June 2006 |
| SGL | July 2006 |
| SGM | August 2006 |
| SGN | September 2006 |
| SGP | October 2006 |
| SGQ | November 2006 |
| SGR | December 2006 |
Also from 2006: SGE, SGF, SGG, SGH, SGJ, SGK, SGL, SGM, SGP, SGQ, SGR.
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 SGN car plate?
The SGN series first opened for bidding in September 2006. It was the newest series for 1 month, until SGP in October 2006. So a car with an SGN plate was registered in September 2006 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 SGN plate?
No older than 20 years and 2 months (in November 2026), counted from September 2006, when the series first opened for bidding. It can be younger: the plate only says when the number came out.
When does an SGN carโs COE end?
A COE lasts 10 years from registration, so a car registered in September 2006, when the series first opened for bidding, had its first COE run to about September 2016; one registered later, later still. So an SGN 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 SGN?
SGP, which first opened for bidding in October 2006, then SGQ in November 2006. Before SGN came SGM (August 2006).
What letter does SGN 1234 end in?
SGN 1234 D. The last letter is a checksum worked out from the prefix and the number: SGN 1 R, SGN 88 R, SGN 8888 X. Check any SGN plate.