I usually get around 34-35 mpg with my 90 b12, but the last few weeks I started using texaco premium 93 octane stuff and have gotten 45-48 mpg the last 3 fill ups. I have been driving the car for max fuel economy just to see what I could get. It seems awfully high, but I don't see how I could make a mistake filling the car with gas....what do the rest of you guys get with your cars?