Any Advantage Of Using Premium Unleaded In Hybrids?

[monya 4]

As the Mrs. has mistakenly filled up with BP Super unleaded, are there any advantages/disadvantages, apart from paying more of course. Can I now expect a higher mpg?

[valmiki 23]

Hi Monya, this question does crop up every now and then, but I think the consensus was that it doesn't, but that some 'Super' fuels tend to have additional cleaning ingredients which may be beneficial. For what it's worth, I find Energizer Ultra+ batteries in my Prius much more avantageous (long-running joke with mates :groan:)

[johalareewi 237]

As the Mrs. has mistakenly filled up with BP Super unleaded, are there any advantages/disadvantages, apart from paying more of course.

No.

Can I now expect a higher mpg?

No. It will probably be lower.

See.

http://www.toyotaownersclub.com/forums/index.php?showtopic=138257entry1230471

and also the follow up...

http://www.toyotaownersclub.com/forums/index.php?showtopic=138257&st=20#entry1230815

[+Steve 2,639]

Just has higher octane levels and maybe a cleaning agent.

I think Alan nailed it in the last post.

[ian rooke 31]

Hi I have used both leaded and super unleaded in my Gen 3 Prius and it improved milage by about 3MPG so was not worthwile, considering the extra cost of super unleaded.