I think my lowest was 42-43mpg (calculated), and that was early on right after picking up from the dealer with 'test driven' miles on it.
Right now it never drops below 50mpg (indicated), and I regularly get home at about 52.5mpg.
This is with extremely varied driving, all over the SF Bay Area, across bridges many times, up and down the steep hills of Pacifica and San Francisco, and with a good number of short trips. (From a client in San Mateo to my local watering hole, maybe 5 minutes, then 5 minutes to home from there, etc).