When you pull up to the gas pump and see the options for regular, mid-grade, and premium fuel, it can be tempting to think that paying extra for premium will somehow make your car perform better. But is premium gas really worth it? Here’s what drivers need to know to make an informed—and wallet-friendly—choice.
- What Is Premium Gas?
Premium gas typically has an octane rating of 91–93, compared to regular gas, which has an octane rating of about 87.
- Octane measures a fuel’s ability to resist engine knocking during combustion.
- Higher octane fuels are designed for engines that operate at higher compression ratios.
- Who Actually Needs Premium Gas?
Only specific types of vehicles require premium fuel:
- High-performance sports cars
- Luxury vehicles with turbocharged engines
- Cars specifically labeled “Premium Fuel Required” by the manufacturer
If your owner’s manual says premium fuel is required, using regular gas could lead to decreased performance or even engine damage over time.
- When Premium Gas Is Recommended (But Not Required)
Some vehicles list premium fuel as “recommended,” not “required.”
- In these cases, using regular fuel is safe.
- You might experience slightly reduced horsepower or fuel economy, but for everyday driving, the difference is usually negligible.
- Can Premium Gas Improve Mileage or Engine Life?
For vehicles designed for regular fuel, switching to premium gas will not improve:
- Fuel economy
- Engine cleanliness
- Vehicle longevity
Spending more for premium when it is not needed is effectively wasting money.
- How Much More Does Premium Gas Cost?
On average, premium gas costs 20 to 60 cents more per gallon than regular. Over time, this adds up significantly without providing benefits for cars that do not require it. - How to Know for Sure What Your Car Needs
- Check your owner’s manual.
- Look for a label inside your fuel door.
- Visit your manufacturer’s website for official fuel recommendations.
- Special Cases: Towing, Extreme Heat, and Older Engines
If you tow heavy loads, drive in extreme heat, or have an older engine prone to knocking, upgrading temporarily to mid-grade or premium might help reduce knock. However, this is an exception, not a general rule. - The Bottom Line
- If your car requires premium fuel, use it.
- If your car only recommends premium, using regular gas will usually be fine.
- If your car is designed for regular gas, stick with regular and save your money.
For most drivers, premium gas is an unnecessary expense. Always follow your vehicle manufacturer’s recommendations to ensure you are getting the best performance at the lowest cost—and avoid paying extra at the pump for no real benefit.
