I just got a used Prius C
I just got a used Prius C back in February and was delighted at the nearly 50 mpg I was seeing. I'm in the South Carolina midlands, so it's not really hilly but not entirely flat, and I'm mostly driving around town on short trips. What had impacted me the most is summer... One temps hit 90s my milage took an almost 10 mpg hit--still better than the 20 year old traditional engine Maxima I replaced but not as amazing as I'd been getting! I also learned that it's really easy to switch into performance mode on accident in this Prius which hits milage too.
Going without ac around here is pretty much a no-go for me so I'll just take the hit part of the year and enjoy the fact I'm still getting over twice the milage I had before!