Car reviews never tell you this:  Any "luxury" car is going to burn hi octane gas.  This is Mercedes, BMW, Audi, etc.  I have a 10 year old BMW and last week I paid 80 cents more than regular.  I am looking for a car with a more pedestrian name.  Here in Northern Ohio the stations show 1.99 for regular to get those people in, and seem to assume luxury owners won't notice that their gas is 60 to 80 cents more.  Kind of like a luxury tax that goes on forever, and it really adds up!