Octane Rating

[KDS]

A recent Aussie review site states that to achieve closer to the "4.1 litres per 100km eating it (the ct200) requires premium unleaded". Does anyone have a view on the opinion?

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[TeesLS460]

Premium unleaded in Australia (and the US) is 95 octane, the same as regular unleaded here in the UK.

[KDS]

Good info - and quick - thanks

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[martswain]

I tried UK Premium (99) for a while, no difference at all from the ordinary stuff.

[PWOOD]

I tried premium in my Honda CRZ and also in my Civic Type S petrol before that and if Im honest no difference (mind plays tricks a bit like a new bit of HiFi kit). Audi VW TSI petrols benefit in MPG with 98 ron or 99 cant mind which it is. What car & Which magazine tests found little to no difference in their tests on a number of cars in controlled conditions.

Question often comes up in US forums as their standard is far lower than UK standard and more likely to note a difference.