What’s the Difference Between Premium and Regular Gas?

Locar Deals
4 min readJun 25, 2021


When you’re at the gas station, you usually have the following options: Regular or Premium. But don’t you know the difference between premium and regular gas?

That Confusion led to some misguided spending at the pump. If you’re not sure what to fill in, check out this post. It will come in handy on your wallet.

Premium vs Regular Gas : Major Differences

Difference Between Premium and Regular Gas

There are some factors that will help you to decide between Premium gas or regular gas. Like their octane level or price. Here we will discuss one by one so your problem gets solved. These major factors are follow:-

  • Octane Rating

Regular gas is rated at 87 octanes in most states, while premium gas is typically rated at 91 or 93 octanes. Higher octane fuel can maintain higher compression before discharging.

Basically, the higher the octane, the less chances the damage will occur at the wrong time. Occasionally, this event is unlikely to damage your vehicle.

However, if it happens frequently, it can accelerate the degradation of your engine.

  • Engine Suitability

Refer to your owner’s manual for the correct gasoline for your engine. This is because engines with lower compression ratios benefit from regular unleaded gasoline, while powertrains with higher compression ratios run better on premium gasoline.

There is a list of cars that require premium gas that have high compression engines, turbochargers, and other high-performance aspects.

Not using premium gasoline will damage your engine, but you could lose some of the performance of this super engine.

  • Price

Would you like to spend less money at the pump? Since premium-grade gas can cost up to 20 to 40 cents more per gallon than regular gas,

Middle Class drivers should only use premium-grade gasoline when necessary to save some money.

Premium or Regular Gas: Additional Tips

As you already read the differences between premium vs regular gas. But if you confusion yet not resolved, read these tips:-

  1. Is premium gas suitable for your vehicle?

If your car doesn’t recommend the premium gas, you’re doing your vehicle damage by getting it. Some vehicles use “premium” gas but some are not. So use Refer to your owner’s manual for the correct gasoline for your engine or check

Some Engineers prescribe premium gasoline because certain types of engines run optimally on higher-octane fuel. If your owner’s manual does not require premium gasoline, your vehicle will not. Or check the list of cars that require premium gas.

2. Can I Switch From Regular to Premium Gas?

Cars are designed to run best on a specific type of fuel. A higher octane gas will not ignite as quickly, which explains why high-performance cars with high compression engines often need higher octane gas.

Engines that use higher-octane fuel tend to run more efficiently and have lower emissions and exhaust, so use the required octane for your particular car.

Using the correct octane rating can prevent damage to your car’s engine and help it run at peak efficiency.

3. If your car doesn’t require premium, fill up with regular.

Why pay good money for something you don’t need? Premium gasoline costs about 50 cents more per gallon than regular gasoline and has no positive or negative effects on vehicles that cannot use it.

The detergent additives in your gasoline are far more important than the octane rating as they help clean your engine and optimize its performance.

Each dealer offers a different mix of additives that are used in all grades. For example, you can find Chevron’s Techron in both your regular and premium gasoline.

4. Can You Mix Regular and Premium Gas?

The combination of different octane ratings will not improve the performance of your car’s engine.

It is best to adhere to the manufacturer’s recommendations for best performance.

Conclusion: Final Verdict

Regular gas has the lowest octane number, Premium has the highest octane number and Super (or Supreme or Premium Plus) has the highest octane number. The octane number is the measure of the fuel’s ability to control the damage.

There are some kinds of loud noises that occur when the air/fuel mixture is incorrect. If you put premium gasoline in your vehicle and think that “premium” means better, you could damage your engine.

It won’t make your vehicle run any better; in fact, it could make it worse. It is important to consult your instruction manual and use it appropriately. It will be helpful for your vehicle’s performance.



Locar Deals

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