The short version
- COE is a 10-year licence to keep a car on Singapore roads, separate from buying the car itself.
- Five categories (A, B, C, D, E) decide which COE pool your vehicle bids in, based on engine size, power, and vehicle type.
- Bidding runs twice a month; everyone who wins in a round pays the same Quota Premium (QP).
- At the 10-year mark, you renew (10 or 5 years), scrap, or export. The numbers behind that decision matter more than most owners realise.
If you have ever shopped for a car in Singapore, the first sticker that stopped you was probably the COE. It often costs more than the vehicle itself, and the price changes twice a month with no announcement until the bidding closes. Here is what the COE actually is, why it exists, and how it works in practice.
The short answer
COE stands for Certificate of Entitlement. It is a separate, tradable certificate issued by the LTA that carries the right to keep a car on the road for 10 years, and you bid for it at auction rather than buy it at a set price.
The price changes with every round. Bidding runs twice a month, the lowest successful bid sets the Quota Premium, and every winner in that round pays it.
What COE stands for
COE is short for Certificate of Entitlement. In Singapore, you cannot simply buy a car and register it. You also need to win a 10-year right to keep that car on the road. The COE is that right. It is a separate, tradable certificate issued by the Land Transport Authority (LTA), and you bid for it through an open auction.
Think of the car and the COE as two separate purchases. The car is the metal. The COE is the licence to use it for the next decade.
Why COE exists
Singapore is small, dense, and the road network has hard physical limits. Without a cap, vehicle numbers would grow faster than the country could absorb. The Vehicle Quota System (VQS) was introduced in 1990 to keep total vehicle population growth in check. The COE is the mechanism that decides who gets the limited new entitlements each year.
The headline number people watch is the Quota Premium (QP). It is the price the marginal winning bidder pays.
The five COE categories
COE is split into five categories, each with its own quota and bidding process. The categories matter because they determine which COE pool your car competes in. We have a deeper guide on Cat A vs Cat B if you want the engine-and-power breakdown.
| Category | What it covers |
|---|---|
| Cat A | Cars with engine size up to 1,600cc and power output up to 130 bhp. Mass-market cars typically fall here. |
| Cat B | Cars with engine size above 1,600cc OR power output above 130 bhp. Larger sedans, SUVs, performance models. |
| Cat C | Goods vehicles and buses. Commercial use. |
| Cat D | Motorcycles. |
| Cat E | Open category. Can be used for any vehicle type except motorcycles. Often used by buyers who lost in Cat A or B. |
How a bidding round works
Two bidding rounds run each month. Round 1 opens on the first Monday and closes on Wednesday. Round 2 opens on the third Monday and closes on Wednesday. Once bidding closes, the LTA computes the QP and announces results that same afternoon.
Each bidder submits their reserve price. The system ranks all valid bids from highest to lowest. The cutoff is set by where the available quota runs out. The lowest successful bid sets the QP, and every winner pays that QP.
If you bid $95,000 and the QP closes at $92,000, you win and pay $92,000. If you bid $90,000, you lose. The same QP applies across that round. To go deeper on what each release tells you, read how to read COE results.
Quota: where the supply comes from
Each quarter, LTA publishes the quota. It comes from three sources:
- Deregistration of older vehicles, which is most of the supply.
- Allowable growth, set by the Annual Vehicle Growth Rate (currently 0% for cars).
- Adjustments from policy decisions and from prior under-allocations.
When deregistrations are high, more COEs are available, and premiums tend to soften. When deregistrations dry up, premiums tend to climb. This is one read of why COE prices move in cycles.
How long a COE lasts
A new COE is good for 10 years. At the end, you have three options:
- Renew for another 10 years by paying the Prevailing Quota Premium (PQP).
- Renew for 5 years. For a Cat A, Cat B or Cat D car this is a final term: once the five years are up you cannot renew again, and the car has to be deregistered. Only Cat C vehicles can keep renewing after a 5-year renewal, and then only in further 5-year periods.
- Scrap or export the car.
The PQP is the rolling 3-month average of the QP for that category. Because it is averaged, PQP smooths out individual bidding spikes. We have a separate guide on how to think about renewing or scrapping.
Why prices move so much
COE premiums can swing 30 percent or more in a single year. A few factors that often correlate, though no single one explains everything:
- Quota changes: smaller quotas typically mean higher premiums.
- Demand cycles: car buying surges before Chinese New Year, and around Budget announcements.
- Vehicle scheme changes: when the rules around EVs, hybrids, or category boundaries shift, demand patterns shift with them.
- Macro conditions: interest rates and broader economic confidence affect financing costs and willingness to commit to a 10-year purchase.
One useful frame: COE is a price-discovery system, not a price-setting one.
The number reflects whatever the marginal buyer is willing to pay this round.
What COE means for you
For up-to-date numbers, see the latest Singapore COE results. To go deeper on what each release tells you, read how to read COE results. To understand which category your car falls into, see Cat A vs Cat B.
When to come and see us
If you are weighing renewal versus scrap, or sizing up a used car with limited COE life left, talk to us before you commit. WhatsApp us and we can usually walk through the numbers same day. We will lay out the PARF rebate, the renewal cost, and what the car is realistically worth in scrap or resale, with no pressure to pick any one option.
We are at Autobay @ Kaki Bukit, #02-61, open Monday to Friday 9am to 6:30pm and Saturday 9am to 12:30pm.
