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Is Premium Petrol in Singapore Worth the Price?
When we see or hear the word "premium," we tend to assume it's a better choice or product. However, when it comes to premium petrol the truth is more nuanced. In Singapore, where car ownership already comes with a hefty price tag, many drivers wonder: If premium unleaded petrol is worth the expense?
Let’s break it down.
What is Premium Petrol?
'Premium petrol’, ‘premium unleaded’ or ‘98-octane’ refers to unleaded petrol with a higher-octane rating than regular unleaded petrol.
Regular unleaded or ‘regular’ is typically rated at between 92 – 95 octane in contrast to ‘premium unleaded’ which is typically rated at a minimum of 98 octane.
Octane is a hydrocarbon molecule and a chemical compound, with the molecular formula C8H18. Its structure includes several isomers, and these compounds play a key role in determining the fuel's resistance to knocking, also known as 'knocking' because of the audible 'knocking' sound produced by an engine when it combusts petrol.
Octane rating measures a fuel's resistance to 'knocking', which in the long term can cause increased engine wear and result in costly repairs. Octane ratings, such as RON (Research Octane Number), MON (Motor Octane Number), and AKI (Anti-Knock Index), are used globally to measure this resistance. In some countries, the octane rating is measured using the Anti-Knock Index (AKI), which is the average of RON and MON — a system that differs from the RON system commonly used in Singapore. The higher the octane number of a petrol, the greater the fuel's resistance to knocking.
But did you know, higher octane petrol doesn’t necessarily result in better engine efficiency or performance for most cars in Singapore?
Premium petrol: What Makes It Different?
As high-performance engines are designed or tuned to generate more power and torque through operating at higher compression of air/fuel, these engines typically have a higher compression ratio, which requires fuel with greater resistance to knocking. Using the correct octane fuel helps maintain optimal engine performance by preventing engine knocking and ensuring smooth combustion. Therefore, these engines require and benefit from using high-octane fuel that has been engineered to withstand premature ignition under increased engine pressures.
However, if high-octane fuel is used in an engine that has not been designed or tuned to take advantage of the benefits of high-octane petrol, unfortunately, you are unlikely to notice any benefits, only the higher cost of premium unleaded petrol.
Which Petrol is Best in Singapore?
At most petrol kiosks in Singapore, you’ll find 92, 95, and 98-octane petrol. While ‘premium’ sounds like a superior option to ‘regular’ or ’92 octane’, the minimum octane required for your car’s engine is usually specified in your car owner’s manual.
- 95 octane petrol is suitable for the of majority petrol powered vehicles in Singapore and it offers a solid balance between fuel economy and price.
- 98 octane petrol is better suited to high-performance or luxury cars that require it.
When choosing the right petrol, it’s important to make a decision based on your car’s requirements, your budget, and your driving habits to ensure optimal performance and maintenance.
So, unless you are driving a high-performance or luxury car requiring 98 octane petrol, we think there’s little reason to pay extra for ‘premium’.
Petrol Prices in Singapore: What You Need to Know
Petrol prices in Singapore are influenced by multiple factors, including international crude oil markets, government taxes and fees, and local operating costs, which means pump prices can fluctuate daily. For drivers, staying up to date with the latest petrol prices is important, as it helps you identify the most cost-effective petrol stations and choose the right petrol grade based on your budget and vehicle requirements.
Today, many petrol stations and third-party websites provide real-time petrol price information. You can check the latest pump prices from different brands such as Shell, Esso, and Caltex, at any time through official websites, mobile apps, or dedicated petrol price comparison pages. Most petrol stations update their prices each morning, making it easier for drivers to make informed refuelling decisions and get the best value at the pump.
Choosing the right petrol grade not only helps reduce fuel costs, but also effectively protects your engine and minimises the risk of engine damage caused by using an unsuitable fuel grade. While high-octane petrol can improve engine performance and fuel efficiency, it also comes at a higher price. Drivers are advised to select the appropriate petrol grade based on their vehicle type, driving habits, and budget ensuring optimal engine performance while avoiding unnecessary spending on premium petrol when it is not required.
Whether you are comparing petrol prices across stations or deciding between petrol grades, making informed fuel choices goes a long way in protecting your vehicle and managing your monthly motoring costs in Singapore.
95 Octane: The Smart Choice for Most Drivers
95 octane petrol is widely used in Singapore because it meets the needs of most drivers and is economical as well as cost-effective. For these reasons, 95 octane seems to be the sweet spot.
95 vs 98 Petrol: Is 98 Petrol Worth It?
According to the Automobile Association (AA) of Singapore, 98-octane petrol is specifically engineered for high stability. This is a technical necessity for high-compression or turbocharged engines found in performance models like Porsche, Ferrari, or high-end BMWs. These engines operate under extreme internal pressure; 98-octane resists "knocking" (premature ignition) that 95-octane may not withstand, ensuring the engine runs at its intended power.
In today’s 2026 market, with 98-octane prices testing the S$3.85–S$4.00/litre mark, the financial stakes are higher. For a high-performance vehicle, using the wrong fuel can lead to chronic engine stress, potentially resulting in an engine overhaul. In Singapore, a major overhaul for a luxury or performance engine currently ranges from S$6,000 to over S$20,000 depending on the complexity.
Conversely, for a standard car like a Toyota Corolla Altis, sticking to the recommended 95-octane can save drivers between S$4,000 and S$8,000 over ten years. This is based on current 2026 price spreads and the average Singaporean annual mileage of approximately 17,500 km.
Higher Octane Rating: Does It Mean Better Performance?
The higher the octane rating, the better the fuel burns, and this helps reduce ‘engine knock’ – the audible sound that can be heard when unburnt fuel remains in the engine as a result of incomplete combustion. Engine knock is typically caused by auto ignition of the fuel-air mixture before the spark plug fires, which can damage the engine. During the power stroke, controlled combustion is crucial for optimal performance and efficiency. However, the benefits of high-octane fuel are most apparent under certain conditions, such as high load or high temperature, where the risk of knock increases. This only matters if your engine is designed or tuned to run on high-octane fuel.
Using high-octane petrol in a car designed for 95 or even 92 octane won’t improve mileage or performance—you’ll just spend more at the pump.
Octane Rating: What It Really Means
The octane rating or Research Octane Number (RON) measures a fuel’s resistance to detonation or premature ignition. The higher the number, the more compression the fuel can withstand before igniting. For most vehicles, an octane number of 95 is adequate.
In addition to RON, there is also the Motor Octane Number (MON), which is another method of measuring a fuel's resistance to knocking under more severe engine conditions.
Octane ratings are determined using two reference compounds: iso-octane, which represents high resistance to knocking, and heptane, which represents low resistance.
Engine Knocking: Why It Matters for Your Car
Engine knocking is an issue that many drivers may encounter during the course of owning a vehicle. It typically manifests as abnormal noise and vibration while the engine is running, and is most often caused by using petrol with too low an octane rating, or by an underlying problem with the engine itself. When a fuel's octane rating is insufficient to resist spontaneous combustion under high pressure, the fuel ignites prematurely before the spark plug fires, causing irregular impacts and noise within the engine.
Prolonged engine knocking not only degrades engine performance, but also reduces fuel efficiency and can even shorten the engine's lifespan. In severe cases, internal engine components may be damaged by sustained pre-ignition and the extreme heat and pressure it generates, ultimately leading to costly engine repairs.
To avoid engine knocking, drivers should choose the appropriate petrol grade based on the octane number recommended in their vehicle's owner manual. High-octane fuel can effectively reduce the risk of engine knocking, and is particularly suited for engines with high compression ratios or high-performance engines. At the same time, carrying out regular engine maintenance and inspections to identify and address potential issues early is equally key to ensuring engine performance and safe operation.
By making informed fuel choices and keeping up with regular servicing, drivers can not only improve their vehicle's power and performance, but also extend the engine's service life — making every journey safer and more dependable.
High Performance Cars: When Premium Makes Sense
If you drive a high-performance car with a turbocharged or high-compression engine, using a higher-octane petrol—like 98—is often a manufacturer requirement. This is because those engines are designed and tuned to extract every bit of power and efficiency from burning high-octane petrol.
How to Save Money on Fuel?
If you're looking increase your mileage per full tank of fuel, try these tips:
Use 95 Octane
It’s the most economical petrol for most non- high-performance and non-luxury vehicles that delivers solid fuel economy.
Take advantage of any credit card discounts at petrol kioks and petrol stations.
Many petrol kiosks/stations in Singapore offer discounts of up to 25%, so it’s worth checking with the cashier before paying to determine if it offers any additional discounts for customers who pay for their fuel with credit cards affiliated with the petrol kiosk or petrol station.
Drive Smoothly
Avoid sudden starts and stops. A steady speed of 45–75km/h reduces fuel consumption by up to 30%.
Obey Speed Limits
Speeding not only increases fuel usage, but it may affect your car insurance premiums if you get in an accident.
Schedule Regular Servicing
A well-maintained engine can increase fuel efficiency and prolong its life.
Car Insurance: Don’t Overlook This Cost Saver
A comprehensive car insurance policy is a key component in managing the total cost of vehicle ownership. While premium rates are influenced by a range of factors, maintaining a clean driving record and practicing safe habits can often lead to significant savings through No Claims Discounts (NCD). By choosing a policy tailored to your specific needs, you ensure that your vehicle—and your finances—remain protected against unforeseen expenses.
The Bottom Line
For many car owners in Singapore, premium petrol is not a necessity. Unless you’re driving a high-performance vehicle, 95 octane is the more cost-effective option.
Choosing the right petrol based on your vehicle’s requirements helps you save money, improve your car’s fuel efficiency, and reduces unnecessary engine issues.
And don’t forget, no matter what petrol you pump, protecting your car with reliable car insurance is just as important!
