ToledoQ

Premium or Regular?

I think I remmeber reading somewhere, but cannot find.



Thanks!

noservice

Dealer told me 87 is fine

Gas door says 91

I have been putting in 89

FitzLA

+1. Same here.

B5AudiVW

91 for US spec. We only have 93 here so that's what I use.

timhayden

The owners manual says it is ok to use 87 AKI but may have reduced performance. No mention of any harm to engine and we have 1000mi on 87 octane with no problems and plenty of performance for us. Saves $4 per tank and we just put 100,000mi on our RX330 on 87 with no money spent on engine whatsoever and saved about $1000 over those miles.

GregH

Interesting - In S. Africa the intruction manual and tank flap infospecifially recommends 95 octane or higher for my 2.0 TFSI Q5. The same applied to my previous 2006 A4 2.0 TFSI. Locally only 93 and 95 are available at higher altitudes such as Johannesburg but at the coat 97 is common.

Eatskittens

The turbo would require a high rating. Higher octane gas is used in higher compression ratio engines to due prevent premature detonation.

avantdoctor

Use Premium fuel only. The direct injection is an issue with all manufacturers that use it. There is an issue with carbon build up on the 3.2 A4, A6, and 4.2 FSI in the RS4. It;s related to fuel quality, and the fact that the vehicles ideally need 95 for maximum performance.

BlackPrestige

I second that, Dealer told me 87 was good, I have been putting in 89