The Subaru Ascent requires regular unleaded fuel with an octane rating of 87 AKI or higher . This means that regular gas is all you need for the Subaru Ascent .
Contents
- Does Subaru XT require premium gas?
- Should I put 87 or 88 in my car?
- Does the Subaru Ascent require premium gas?
- Can you mix 87 and 91 gas?
- What happens if I accidentally put 87 instead of 91?
- Do Subarus run better on premium gas?
- What happens if I put 88 gas in my car instead of 87?
- How is Subaru Ascent on gas?
- Can Subarus use 88 gas?
- Do all Subarus require premium gas?
Folks, the Ascent and 2020+ Outback XT (and Outback Wilderness) require 87 octane (or higher) in all climates, at any altitude.
Should I put 87 or 88 in my car?
According to an RFA analysis, more than 93% of model year 2019 vehicles have been explicitly approved for the use of Unleaded 88 by auto manufacturers. General Motors recommends use of Unleaded 88 beginning with its 2012 model year vehicles and Ford recommends Unleaded 88 for its 2013 and newer vehicles.
On ordinary Subaru family vehicles like the Ascent and Forester, regular gas is all you’ll need. 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.
Can you mix 87 and 91 gas?
Is it bad to mix premium and regular gas? Well, not necessarily. 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.
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.
Premium gasoline can withstand more excellent compression before combustion, making it essential for some Subaru models like the WRX and BRZ, which have higher compression ratios. Using regular unleaded gas in these cars could lead to premature combustion and potential engine damage.
What happens if I put 88 gas in my car instead of 87?
What happens if you normally use 87 unleaded gas but use 88 unleaded once? All cars built since 2002 can use unleaded 88 regularly and work just fine. I find in my car, that I do indeed get an additional 1.2 miles per gallon increase in the gas mileage, going from a healthy 29.4 to 30.6 with continual usage.
How is Subaru Ascent on gas?
The 2023 Ascent Base and Premium models get up to 26 MPG on the highway and 20 MPG city1. But the Onyx, Limited, and Touring fuel efficiency get 25 MPG on the highway and 19 MPG in the city1.
Can Subarus use 88 gas?
MOST Subarus CANNOT run 88 octane (because of the ethanol content – 15% is too high for most). The following Subies can run UP TO 10% ethanol, and cannot run 88 octane, because it has too much ethanol (up to 15%). These vehicles should not use more than 10% ethanol: 2021 WRX (ALSO needs 91+ octane)
If your Subaru has standard specifications and does not carry a warning to use only premium gas, regular gasoline should not affect performance. However, if your Subaru engine is turbocharged, follow manufacturer recommendations and use only premium gasoline.
