What gas do you use for the S5 ? Mid-range 89 or Premium 93 Octane? Any difference?

[cyberS4]

Do you notice any difference in mileage between 89 octane and 93 octane for the S5 ?

[WhyIs6afraidOf7]

i do not have an s5 but i am 75% positive on the door thingy that houses the gas tank it says what gas you should use and i know that if you use a lower octane gas than recommended your engine with adjust itself to run off it but you will lose power and no body wants to loose power

[A4A4A4]

Do you notice any difference in mileage between 89 octane and 93 octane for the S5 ?

IIRC the S5 has minimum requirement of 91 octane. Filling up with anything lower will be robbing your car of performance and efficiency.

[NateS5]

IIRC the S5 has minimum requirement of 91 octane. Filling up with anything lower will be robbing your car of performance and efficiency.

I think only of performance, and even then it is a pretty small amount.

[speedydragon]

I wouldn't be going cheap on gas on a high performance engine. Though the ECU will automatically adapt to the lower octane levels, the idea of the ecu pulling timing from the engine doesn't sound too safe to me.

[bknewtype]

91 minimum, 95 max.

i always fill up on 93, but i accidently used 91 on my last fillup :X

[TGreene09]

Always use high grade! your engine will thank you later on!

[GuzmanA5]

Anyone buying an A5/S5 and worrying too much about gas prices should drive back to the dealer and downgrade to a Mazda 2. I believe 91 is minimum recommended octane per manufacturer's direction, I believe it's stated in your gas tank door-cap as a reminder, I would go 91 or higher. Chances are the higher you go, the cleaner gas solution you will get which will keep your engine up running smooth. I recommend Sunoco 91 and 93.

[satchmo123]

I only use 100 racing fuel in my S5

[TofuShop]

it's a 60k car. pay the extra 6$/tank and get 91-93 octane

[ActivS5]

Chevron 91 for me. 91 is the highest grade here in CA :/ I wish we had 93.

[FaceSmA5h]

Chevron 91 for me. 91 is the highest grade here in CA :/ I wish we had 93.

There are few gas stations in LA, one in Pasadena for sure with a 100 octane rating (76 Gas Station).

[lascivious]

I use chevron 91 too; I swear I can feel a performance improvement using Chevron 91 over all other 91s (including Tex and Shell). Am I imagining the improvement? I would use higher octane, but there isn't any close by.

[Bigserve134]

I put the highest available in my area which is cheveron 91. anything less will lead to an accelerated carbon build up and impaired performance