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Does the Acura RDX really need premium gas?


As a trusted auto service provider with years of experience in car maintenance and repair, I often get asked whether certain vehicles truly require premium gasoline. One such vehicle is the Acura RDX, a popular luxury SUV known for its performance and reliability. In this article, I’ll break down whether premium gas is a necessity for the Acura RDX and what it means for your vehicle's performance and longevity.


Understanding the Acura RDX's Engine Requirements


The Acura RDX is equipped with a turbocharged engine, which is designed to deliver high performance and efficiency. Turbocharged engines often have higher compression ratios, which means they can benefit from higher-octane fuel, such as premium gasoline. Premium gas typically has an octane rating of 91 or higher, which helps prevent engine knocking and ensures optimal performance in engines designed for it.


Does Acura Recommend Premium Gas for the RDX?


According to Acura, premium gasoline is recommended for the RDX to achieve the best performance and fuel efficiency. However, the vehicle can run on regular gasoline (87 octane) without causing damage to the engine. That said, using regular gas may result in slightly reduced performance and fuel economy, as the engine's computer adjusts to the lower-octane fuel.


Why Premium Gas Matters for Turbocharged Engines


Here are some reasons why premium gas is often recommended for turbocharged engines like the one in the Acura RDX:



  • Prevents Engine Knocking: Higher-octane fuel resists premature combustion, which can cause knocking and potentially damage the engine over time.

  • Optimizes Performance: Premium gas allows the engine to operate at its full potential, delivering better acceleration and responsiveness.

  • Improves Fuel Efficiency: While the difference may be slight, premium gas can help maintain the fuel efficiency that the RDX is designed to achieve.


Can You Use Regular Gas in the Acura RDX?


Yes, you can use regular gas in the Acura RDX without causing immediate harm to the engine. However, there are trade-offs to consider:



  • Reduced Performance: The engine may not deliver the same level of power and responsiveness as it would with premium gas.

  • Lower Fuel Efficiency: You might notice a slight decrease in miles per gallon when using regular gas.

  • Long-Term Effects: While unlikely, prolonged use of lower-octane fuel could lead to increased wear on engine components over time.


Conclusion: Is Premium Gas Worth It?


Ultimately, whether you choose to use premium gas in your Acura RDX depends on your priorities. If you value optimal performance, fuel efficiency, and long-term engine health, premium gas is the way to go. However, if you’re looking to save money at the pump and are willing to accept slightly reduced performance, regular gas is a viable option.


At Kevin’s Autos, we’re here to help you make informed decisions about your vehicle’s maintenance and care. If you have any questions about fuel types or need assistance with your Acura RDX, don’t hesitate to reach out to us. Your car’s performance and longevity are our top priorities!


Frequently Asked Questions

What happens if you accidentally put regular gas instead of premium in an Acura?


An Acura spokesperson referred us to the TLX's owner's manual, which states, “Use of lower-octane gasoline can cause occasional metallic knocking noise in the engine and will result in decreased engine performance.”



Does an Acura really need premium gas?


Do All Acuras Require Premium Gas? Like we stated, premium gas is only recommended on the MDX, RDX, TLX, RLX, and ILX Acura models. You'll be safe on our Cherry Hill roads using regular gas in these automobiles. However, the engines in these models are designed for optimal performance when high-octane fuel is used.



Does the 2024 Acura RDX take regular gas?


According to Acura, the Acura NSX requires premium gas. For models like the RDX, MDX, TLX, RLX, and ILX, premium gas is recommended. So, does Acura require premium gas? Only some models, not all — our service department recommends using higher octane gas in Acura for a few reasons.



What happens if I don't use premium gas in my Acura RDX?


When you fill your Acura's fuel tank with a lower octane level than is recommended, you'll experience pre-ignition (also known as engine knocking). Pre-ignition negatively affects your fuel economy and can damage your pistons or cylinder walls over time.



What gas is recommended for an Acura RDX?


Premium unleaded 91 octane fuel
If you're the proud owner of a new Acura sedan or SUV, Premium unleaded 91 octane fuel is required to make it run – and recommended for the following Acura models: Acura Integra. Acura TLX. Acura RDX.



What will happen if I put regular gas in a premium car?


However, remember this: when a premium fuel engine runs on regular fuel, there's a risk of combustion of the fuel mix before the spark plug even lights up. This causes a phenomenon called knocking, which is likely to damage the engine.



Does the 2025 Acura RDX require premium gas?


According to Acura, premium gas is required for the Acura NSX, and it's recommended for the MDX, RDX, TLX, RLX, and ILX. The answer to the question, “Do all Acuras require premium gas?” is no — but it's recommended that you use a higher-octane fuel in your Acura for several reasons.



Do I really have to use premium gas?


Should I use regular or premium gas? You should use the type of fuel the vehicle's manufacturer recommends. A vehicle that runs on regular gas will not run any better on premium fuel. Using premium gas in a vehicle designed for premium gas will help the car perform better and avoid damaging the engine with regular gas.



Does 2024 RDX need premium gas?


But, do all Acura models require premium gas? No — but it's recommended that you use a higher-octane fuel in your Acura for a number of reasons. According to Acura, premium gas is only required for the Acura NSX, but it is recommended for the MDX, RDX, TLX, RLX, and ILX.



How can I get better gas mileage in my Acura RDX?


Six Ways to Get Better Gas Mileage

  1. Avoid Rush Hour. Planning your route can help you avoid rush hour traffic and maximize your fuel efficiency.
  2. Remove Excess Weight.
  3. Follow the Speed Limit and Use Cruise Control.
  4. Don't Let Your Car Idle For Long.
  5. Use the Correct Grade of Motor Oil.
  6. Schedule Routine Maintenance.


Kevin's Auto

Kevin Bennett

Company Owner

Kevin Bennet is the founder and owner of Kevin's Autos, a leading automotive service provider in Australia. With a deep commitment to customer satisfaction and years of industry expertise, Kevin uses his blog to answer the most common questions posed by his customers. From maintenance tips to troubleshooting advice, Kevin's articles are designed to empower drivers with the knowledge they need to keep their vehicles running smoothly and safely.