Which Acura model takes regular gas?
The Acura ILX is the model in Acura’s current lineup that accepts regular unleaded gasoline (87 octane). Most other Acura models typically require higher-octane fuel for optimal performance.
In this article, we break down which Acura models can run on regular gasoline, what octane means for modern engines, and how fuel choices affect performance and maintenance. We also highlight practical tips for buyers weighing fuel options across Acura’s lineup.
Understanding fuel octane and Acura engines
Octane rating indicates how resistant fuel is to knocking under compression. Modern Acura engines, especially turbocharged or high-output units, are engineered to run on higher-octane fuels to preserve performance and efficiency. Some non-turbo or lower-stress engines can safely operate on regular gasoline, but using premium fuel is often recommended for turbocharged variants to maximize power and responsiveness.
The ILX: Regular gas-friendly entry model
The ILX stands out in Acura’s current lineup as a model designed to operate on regular gasoline. Its standard powertrains do not require premium fuel, and owners can fill with 87-octane gas. This makes the ILX a more straightforward option for buyers who want to avoid higher fuel costs associated with premium fuel.
Details on the ILX’s fuel requirements
According to Acura’s published specifications and owner manuals, the ILX’s engines are compatible with regular unleaded gasoline (87 octane). The use of higher-octane fuel is not required, though some drivers may choose premium for perceived throttle response or due to driving conditions. Always verify the exact fuel recommendation for your specific model year and engine variant, as there can be small differences between trims or updates.
What about the rest of the lineup?
Beyond the ILX, most Acura models emphasize higher-performance capabilities that typically benefit from, or require, premium gasoline. Turbocharged engines—such as those commonly found in the RDX, TLX, and Integra variants—and higher-output configurations generally specify premium fuel to achieve their rated power and efficiency. Driving a turbocharged or high-compression engine on regular fuel may result in reduced performance or knock under certain conditions, and Acura’s manuals usually advise using premium for peak performance.
Practical takeaways for buyers
If you’re prioritizing fuel type, the ILX is the clearest option that accepts regular gas without compromising the intended design or warranty notes. For other Acura models, check the owner’s manual for your exact engine and trim to confirm whether regular fuel is acceptable or if premium is recommended for optimal performance. In daily driving, many owners do not notice a large difference with higher-octane fuel, but long-term performance and efficiency are generally best when following the manufacturer’s guidelines.
Summary
In short, the Acura ILX is the model that takes regular gasoline in its current lineup. Most other Acura models—especially turbocharged or high-output variants—call for premium fuel to deliver their best performance. Always consult the specific owner’s manual for your year and trim to confirm the exact octane requirements and to ensure you're meeting the manufacturer’s recommendations.
Which Acura models use regular gas?
No Acura model requires regular gas; only the Acura NSX requires premium fuel, while other models like the RDX, MDX, and TLX recommend it for peak performance but can run on regular without damage. Most modern Acura engines are designed to adjust to lower-octane fuel, but using regular may lead to reduced power or fuel efficiency.
Acura models that recommend premium fuel
Acura RDX, Acura MDX, Acura TLX, Acura ILX, Acura RLX, and Acura Integra.
Acura models that require premium fuel
Acura NSX.
What to do
- Check the fuel door: The recommended or required fuel grade is typically printed on a sticker inside the fuel filler door.
- Consult the owner's manual: For the most accurate information, refer to the owner's manual for your specific vehicle model and year.
- Consider your driving habits: If you consistently drive in a manner that requires high performance, such as spirited driving or towing, premium fuel is a good idea. For normal, daily driving, you can use regular gas, but be aware of the potential for slightly reduced power and efficiency.
- Avoid damage: While regular gas can be used in models that recommend premium, consistently using it in a vehicle designed for premium fuel may lead to a decrease in performance and potentially impact the engine over the long term.
What happens if you put regular gas in an Acura MDX?
Modern-day vehicles, like the Acura models listed above, are frequently designed with knock sensors included to prevent pre-ignition. While your luxury vehicle can run on lower-octane, or regular, gas, you won't be able to experience its full performance potential without premium gas.
What happens if I put regular gas in my Acura TL?
Acura cars and SUVs are designed to get the best performance possible. With many now incorporating turbochargers, higher compression, and variable timing, regular-grade gas can cause pinging. Pinging, or spark knock, happens when fuel detonates before the spark plug ignites the air-fuel mixture in the cylinder.
Can an Acura RDX run on regular gas?
No, an Acura RDX is not designed to take regular gas; it is highly recommended to use premium gasoline for optimal performance, efficiency, and longevity. While the engine can run on regular fuel, it will do so less efficiently, potentially leading to reduced horsepower, lower fuel economy, and engine knocking. Using premium fuel ensures the engine runs smoothly as it is designed to.
What to do if you've been using regular gas
- You can switch to premium fuel, and the engine computer will adjust to accommodate the change.
- It is best to stick with one type of fuel once you make the switch.
- Using regular gas in the long term can cause deposits to build up and potentially damage the engine over time.
Why premium is recommended
- Acura's turbocharged engines require higher octane fuel for peak performance.
- Premium fuel prevents pre-ignition, which can cause engine knocking and rattling.
- Premium fuel will result in better fuel economy and longevity for your engine.
