Originally Posted by Nathan

around $2 per liter in germany. But that is for 98 Octane, something you can hardly get in the US.
It's around $2.20 per liter for Premium 100+ Octane (which is impossible to get in the states as far as I know)

Roughly $1.85 per liter for 95 Octane... and maybe $1.75 for 91 octane if you can still find it, thats the lowest available....

Usually as far as I remmber, premium+ in the US is 95? Regular is 89 or so... my car's claim they want at least 95 <G> ... My SLS says you should use 98 octane...