The short version
- Cat A: engine displacement up to 1,600cc AND power output up to 130 bhp. Both thresholds must be met.
- The 130 bhp cap is the gotcha. A 1,498cc turbocharged engine at 150 bhp is Cat B, not Cat A, regardless of engine size.
- The Cat B premium over Cat A swings hard, past $40k at the 2023 peak but under $7k for every round of 2026 so far.
- For most mass-market buyers at $130-160k OTR, Cat A is the practical call. The 10-year running costs on Cat B cars run higher too, not just the COE sticker.
Cat A and Cat B are the two COE categories most Singapore buyers actually choose between. The boundary looks simple on paper. In practice, the choice is shaped by both the car you’re buying and the gap between the two premiums in the current bidding cycle.
| What you are comparing | Cat A | Cat B |
|---|---|---|
| Petrol and diesel cars | Up to 1,600cc AND up to 130 bhp, both thresholds met. | Above 1,600cc OR above 130 bhp, and either one on its own is enough. |
| Electric cars | Maximum motor output up to 110 kW, around 147 bhp, as registered with LTA. | Maximum motor output above 110 kW. |
| Share of the quota | The larger of the two. | A smaller share of the total quota. |
| Who is bidding in it | Mass-market buyers. | A higher-spend pool: SUVs, premium sedans, performance EVs. |
| What the premium does | The cheaper side of the line in recent cycles. | Usually higher, though the gap swings hard: it ran past $40,000 in 2023 and has stayed under $7,000 through 2026. |
| Usually the right call for | Budgets around $130-160k OTR. | Buyers stepping up past $200k, where the Cat A limits get too tight. |
The hard rule that defines each category
The line between Cat A and Cat B is set by two thresholds, and a car must meet both Cat A criteria to qualify. If it exceeds either, it falls into Cat B.
- Cat A: engine displacement up to 1,600cc AND power output up to 130 bhp.
- Cat B: engine displacement above 1,600cc OR power output above 130 bhp.
The horsepower threshold (130 bhp) is the one that catches buyers off guard. A 1,498cc turbocharged car with 150 bhp is in Cat B, not Cat A, even though its engine is well under 1,600cc.
For electric vehicles
EVs follow the same logic but with motor power as the relevant figure. A motor-rated EV with up to 110 kW (around 147 bhp) falls into Cat A; above that, Cat B. The EV power threshold is checked against the maximum motor output as registered with LTA.
This becomes interesting because many entry-level EVs in Singapore sit close to the 110 kW line.
A small spec change can move a car from Cat A to Cat B and add tens of thousands to the on-the-road price.
Why Cat B is usually more expensive
Two structural reasons:
- Cat B has a smaller share of the total quota.
- Cat B draws from a higher-spend buyer pool: SUVs, premium sedans, performance EVs.
The Cat B premium is usually higher than Cat A, but the gap has stayed under $7,000 for every round of 2026 so far, against more than $40,000 at the 2023 peak. The gap widens when luxury demand is hot and narrows during cooldowns.
The current ratio between Cat A and Cat B
One way to read the buying market is the Cat A to Cat B ratio.
A narrow gap changes the calculus for buyers who were originally Cat A shoppers. If a Cat B-eligible model only costs $15,000 more in COE, stepping up may make sense. At a $50,000 gap, Cat A is the rational choice for most. For the most current ratio, check our COE Results hub.
Common cars that flip categories
A few model lines have variants that sit on either side of the Cat A line. The buyer’s decision can come down to which trim or engine to spec.
| Model | Which side of the line it lands on |
|---|---|
| Honda Civic | 1.5T trim is in Cat B; older 1.6 NA was Cat A. |
| Toyota Corolla Altis | 1.6L is Cat A; hybrid variants depend on power output. |
| BYD Atto 3 | Motor specs put it in Cat B in most configurations. |
| Hyundai Kona Electric | Standard range is Cat A; long range can flip to Cat B depending on motor variant. |
| Volkswagen Golf | 1.4 TSI variants typically Cat A; GTI and R are Cat B. |
This is illustrative; specifications change with model year and local trim. Always check the LTA-registered figures for the exact car you’re looking at.
How the choice usually plays out
The sticker COE difference is the headline; the recurring costs are the long tail.
What can shift the right answer
A few things that change the maths:
Quota redistribution
LTA has moved quota between Cat A and Cat B before, and doing it again can re-anchor the gap.
EV incentives
Schemes that reduce ARF for Cat B EVs but not for Cat A petrol equivalents.
A swing in luxury demand
Something like the run-up after bonus season, or a Budget announcement.
None of these are predictable round-to-round, but watching the trend in our COE Results hub across 3 to 6 months gives a much better read than reacting to a single round.
Bottom line
Cat A is for engines up to 1,600cc and 130 bhp; Cat B is everything else. The horsepower threshold is the gotcha. The Cat A to Cat B premium gap moves over cycles and changes which side of the line is the rational choice for borderline shoppers. If you’re deciding between two specs, the COE difference is one factor; the 10-year running costs are usually larger.
If you’re nearing your current COE’s expiry and weighing the next move, our renewal versus scrap guide covers the other side of the decision. For a refresher on how COE works at all, see What is COE?
When to come and see us
If your COE is coming up for renewal and you’re working through whether to renew, export, or scrap, WhatsApp us and we can usually talk it through the same day. We handle COE renewal advisory, pre-purchase inspections, and end-of-COE paperwork end to end. No pressure, no upselling beyond what the car actually needs.
We’re at Autobay @ Kaki Bukit, #02-61, open Monday to Friday 9am to 6:30pm and Saturday 9am to 12:30pm.
