What fuel does a Subaru WRX take?
The Subaru WRX is a performance-oriented vehicle that has garnered a loyal following among car enthusiasts. Known for its turbocharged engine and all-wheel-drive capabilities, the WRX is designed to deliver an exhilarating driving experience. One of the most common questions among potential buyers and current owners is about the type of fuel this sporty car requires. In this article, we will explore the fuel specifications for the Subaru WRX and why they matter.
Fuel Requirements for the Subaru WRX
The Subaru WRX is engineered to run on premium unleaded gasoline with an octane rating of 91 or higher. Using the recommended fuel is crucial for maintaining optimal engine performance and efficiency. Here are some key points to consider:
- Engine Performance: The turbocharged engine in the WRX is designed to operate at higher compression ratios, which can lead to knocking if lower-octane fuel is used.
- Fuel Efficiency: Premium fuel helps the engine achieve better fuel efficiency, which can save you money in the long run despite the higher initial cost of premium gasoline.
- Warranty Considerations: Using the recommended fuel type is often a requirement for maintaining the vehicle's warranty, so it's essential to adhere to these guidelines.
Why Premium Fuel Matters
Using the correct fuel type is not just about performance; it also affects the longevity of your vehicle. Here are a few reasons why premium fuel is important for your Subaru WRX:
- Prevent Engine Knock: Lower octane fuels can cause engine knocking, which can lead to severe engine damage over time.
- Maximize Turbo Performance: The turbocharger in the WRX benefits from the higher octane rating, allowing for better power delivery and responsiveness.
- Maintain Emissions Standards: Using the right fuel helps the vehicle meet emissions standards, contributing to a cleaner environment.
Conclusion
In summary, the Subaru WRX requires premium unleaded gasoline with an octane rating of 91 or higher to ensure optimal performance and longevity. By following this guideline, you can enjoy the full capabilities of your WRX while also protecting your investment. Always consult your owner's manual for specific recommendations and maintenance tips to keep your vehicle running smoothly.
Frequently Asked Questions
What is the best gas for WRX?
Subaru says the higher-performance Subaru WRX STI requires 93-octane gasoline for optimal performance. The Owner's Manual states that if 93 octane isn't available in your area, 91 octane is acceptable.
What happens if you accidentally put 87 instead of 91?
If you put lower-octane fuel into your high-octane vehicle, whether by mistake or to save money on gas, you'll probably notice the effects right away: things like poor fuel economy, reduced acceleration, and spark knock, which sounds like a high-pitched pinging or rattling noise.
Why do turbocharged cars need premium gas?
Also, premium gas is more resistant to engine knock in luxury and performance vehicles with turbochargers or high-compression engines, so you can hit that horsepower smoothly. Remember that you see these benefits only in vehicles requiring premium gas and not necessarily in most other vehicles.
Can I run E85 in my WRX?
Yes, with an eFlexFuel kit installed, your Subaru WRX STI can run on both E85 and regular gasoline.
Is premium gas good for Turbo?
Also, premium gas is more resistant to engine knock in luxury and performance vehicles with turbochargers or high-compression engines, so you can hit that horsepower smoothly. Remember that you see these benefits only in vehicles requiring premium gas and not necessarily in most other vehicles.
What happens if I put 87 instead of 93?
If you put lower-octane fuel into your high-octane vehicle, whether by mistake or to save money on gas, you'll probably notice the effects right away: things like poor fuel economy, reduced acceleration, and spark knock, which sounds like a high-pitched pinging or rattling noise.
Can you use 89 instead of 87?
If you opt for a higher octane than your manual recommends—say, 89 instead of 87—your car will be perfectly fine. It will not, however, improve your car's mileage or give it any sort of extra performance boost. The only thing it will do is cost you extra money, so don't do this.
Can I run 87 in a WRX?
For the WRX model, the Owner's Manual states: “The engine is designed to operate using unleaded gasoline with an octane rating of 91 or higher.” However, fuel with an octane rating of 87 or higher can be used with no detriment to engine durability.
Does the Subaru WRX require premium fuel?
However, the engines found in the Subaru BRZ, the Subaru WRX, and the Subaru WRX STI are built for higher compression with a powerful turbocharger -- as a result, regular fuel can be problematic in these engines. Instead, premium gas is required.
Should I use 87 or 91 gas?
The greater the octane number, the greater the fuel's ignition temperature. There is no benefit in using a higher octane fuel than your vehicle's engine needs, doing so is just wasting money. If your engine doesn't knock at regular octane (87), there is nothing to be gained from using a higher octane fuel.
