Audio5

92 No lead
95 Standard No lead Fuelsave
98 No lead V-power Supreme

On my cap it says "95 octane" This is probably what Audi recommends.

What do you guys think?

SloopJohnB@mac.com

That 95 is likely Motor octane if not Research Octane.

There might be more information in your owner's manual, even the one in your car's hard drive/MMI.

Here in the States it's (R+M)/2 for octane ratings.
91 is sufficient and works well, you might get a few more hp with 93.
Depends on the fuel service station...when I fuel up with a top tier like exon or sunoco that has 91 I use 91, save a buck or two. With Shell, they just have 87 and maybe 89 and then jump to 93.
104 is available at some Sunoco stations but worthless unless you're chipped and boosted, etc.

uberwgn

Audio5

I'm using 95 now, and yes i'm in Europe. Guess i'll stick to that. But does anyone know if 98 makes a difference in the cars performance?

uberwgn

Maybe with chip-tuning there'd be a reason to use the 98 (RON) octane fuel.

Audio5

Hmmm ok, mine is not tuned (yet) but i'm thinking about it.