Recommended Fuel for Suburu Impreza S 2019

Hi All, my partner has just picked up her Suburu Impreza S, however, one think that they never advised her was what fuel they would recommend for it. The only thing she has seen is just unleaded (so I assume E10 is not the best).
Any advice would be appreciated, but I'm sure she'll call the dealership in the morning.

Comments

  • +10

    Read the manual?

    • -5

      Hi, we wanted to hear from user experience. Sometimes what's in the manual from the manufacturer isn't always correct, like 710.

  • Read the manual.

    No, wait… only Shell premium 98. Nothing else will do.

  • +3

    It might say it on the fuel flap when you open it too.

    Also I dont know about you but I wouldn't use anything but 98 if I had any car newer than 2012, but that's just me.

    • +5

      Unless the car is designed for 98 only you are just burning money.

    • -1

      He's probably the guy with the Mazda 3 i saw filling up with 98

      • +3

        I put 98 in my lawnmower like a boss

  • 91RON according to Redbook

    But check inside the fuel flap

  • -1

    I'd use a level above minimum - 95. Subie engines can knock with crap fuel(under octane).

  • Premium, dude! Premiuuuum!

  • It says minimum 90 RON on their specs page in the Engine section.

    I have a 2017 Impreza which is the same series and it says minimum 90 RON in the manual. I've been running it on regular unleaded for two years without issues. I tried premium unleaded a couple of times, but I could not notice any difference in fuel economy or driving feel.

    • This is what I like to hear. Thx Trongy.

  • OTOH, Subaru does have a history of designing engines for 95ron and then downgrading that requirement for Australia because too many tightwads complained about paying for 95ron. There was a single sheet addendum in my Liberty's handbook that said 92 was fine for AU even though the main part of the handbook said 95ron minimum. The knock sensors worked overtime on 92ron and the engine was very sluggish at low revs.

    I'd recommend you try 4 tanks of each fuel including E10 which is 94ron and see how the fuel consumption is and also if the seat-of-the-pants dyno feels any difference.

  • Typically with most newer cars, they'll run fine on 91, however they adjust timing etc and (sometimes) make more power and have better economy on 95/98.

    Best bet is try a few tanks of each, and also bear in mind that if a car is brand new, fuel economy will change as the car gets run in.

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