Does a Subaru Ascent need premium gas?
The short answer is no, the Subaru Ascent does not require premium gasoline. The Ascent's engine is designed to run on regular unleaded gasoline, which is the recommended fuel type for this vehicle.
Subaru Ascent Fuel Recommendations
According to Subaru's official guidance, the Ascent's 2.4-liter turbocharged Boxer engine is optimized to run on 87 octane regular unleaded gasoline. Subaru does not recommend using premium fuel in the Ascent, as it will not provide any additional benefits. The owner's manual for the Ascent clearly states that regular unleaded gasoline is the required fuel type.
Why Regular Fuel is Sufficient
The Subaru Ascent's engine is designed with a relatively low compression ratio, which allows it to operate efficiently on regular 87 octane fuel without risk of knocking or pre-ignition. Higher octane premium fuels are typically only required for engines with higher compression ratios, which are more prone to premature detonation on regular gas.
Using premium fuel in the Ascent would not provide any meaningful performance, fuel economy, or reliability benefits. In fact, it would simply result in higher fuel costs without any tangible advantages. Subaru engineers have calibrated the Ascent's engine to deliver optimal performance and efficiency on regular 87 octane gasoline.
Key Takeaways
- The Subaru Ascent requires regular 87 octane unleaded gasoline, not premium fuel.
- Using premium gas will not provide any benefits and will only result in higher fuel costs.
- Subaru has designed the Ascent's engine to run efficiently and reliably on regular unleaded fuel.
In summary, the Subaru Ascent is engineered to perform best on regular 87 octane gasoline, and there is no need to pay more for premium fuel. Sticking to the manufacturer's recommended regular unleaded fuel will ensure optimal performance and fuel economy for your Ascent.
Are Subaru Ascent good on gas?
This also includes outstanding fuel economy. What is the Subaru Ascent mpg for the 2022 model year? The 2022 Subaru Ascent gets up to 27 mpg city/21 mpg highway.
What happens if I 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.
How do I know if my car requires premium gas?
Check your owner's manual to see which gas type your manufacturer recommends for your specific car make and model. Note that the definition/label for premium gas can differ from state to state and station to station. Some of the various names for automotive fuel with high octane levels of 91-94 include: Premium.
Can you mix 87 and 91 gas?
You can absolutely mix octanes, and they mix linearly.
Is there a downside to using premium gas?
What happens if you use premium gas instead of regular? The only thing that will happen if you use premium gas in an engine designed for regular fuel is that you'll spend more money, according to Cars.com. An engine that runs on regular gas will not perform better because you put premium gas in the tank.
Do any subarus require premium gas?
If you drive a Crosstrek, Forester, Outback, Legacy or Ascent, your vehicle is designed to run on 87 octane, or regular fuel. Performance Subaru models – the WRX, WRX STI and BRZ – have a premium fuel requirement, but even with those vehicles, check your manual for information on which fuels are appropriate.
Can I put 85 octane in my Subaru?
You don't have to buy the more expensive grades. In the higher-elevation states of Colorado, Wyoming, and Utah, you can buy 85-octane gasoline. In other areas of the country, your Subaru model is designed to run on 87 octane.
Does premium gas get better mileage?
No, any fuel efficiency gained using premium fuel would stem from engine performance, not the gas itself. Buying premium gas won't have you visiting a gas station any less frequently, especially with a standard engine not designed to take advantage of premium gas.
Is it OK to put regular gas in a premium car?
If your car requires premium to run smoothly, but you aren't able to find a station with premium gasoline, it won't hurt to top off with regular gasoline. You do want to avoid running on regular gasoline for extended periods of time.
Should I put premium gas in my Subaru Ascent?
The Subaru Ascent is designed to run on regular unleaded gasoline with an octane rating of 87 AKI (Anti-Knock Index). Using higher octane fuel is not necessary for optimal performance and may not provide any additional benefits.
