Case 3: Same speed avg going to and back from school. hit traffic and was stop and go on the way home for a good 30 mins. I did a lot more city driving on this tanks. also i thought it was gonna be low because my mom took my car to get inspected friday and its the end of the month so there was a 1hr 15min line she was waiting in and she kept turning off and on. So pretty much using gas but hardly any miles.