[me and my metro]

I have been keeping detailed fuel records for the last 2000 miles. I fill at the same pump, at the same nozzle setting, never top off, and at the same time of day. This is as close as I can get with OBD 1 car. I think the increase jumped out at me because I had been trying a set of 195/50-15 tires and 7" wheels for two weeks prior dropping the car and going back to the 175/70-13's, now with the new trans, the first tank is at 57 mpg, I'll see how that holds. I believe my driving style is improving constantly, so that may also be part of the jump.