What should I be getting for mpg??

Your MPG may vary wildly, about the worst would be rural mail delivery folks, they get 35, as they never cruise but are always accelerating and decelerating. Someone who does non-stop low speed security cruises may get 75 MPG.

Your driving will be unique to you and with no hints, 47 is about right.

2010 Toyota Prius MPG Reports | Fuelly

 

You can look at either trip A or trip B. Each is reset by holding down the trip button for a second or two. I typically reset trip A whenever I fill up. It will then read the computer mileage until my next fill up. I may use trip B for an extended trip (multiple fuel ups), or if I just want to check a section in between fill ups.

Note that the computer indicated MPG will be slightly higher than if you calculated it by hand. Or, if you sign up for fuelly it calculates and tracks it for you.

 

Exactly!

If OP wants to read more, these might be insightful:
Your Mileage Will Still Vary
Car and Driver: Here’s Why Your Mileage May Vary (A Lot) from the EPA Estimates | PriusChat
Car and Driver: The Truth About EPA City / Highway MPG Estimates | PriusChat

 

With 83,000 miles and nearly 3 1/2 years of ownership I would say that you
can expect during the summer 47-52 mpg, calculated. This is normal driving
with gas with 10% Ethanol. Our average for the summer, over 10,000 miles, was nearly 53 mpg calculated.

In winter, at least here in Oregon, mpg's drop to about 45 mpg calculated.
We never got below 40 mpg calculated since we purchased our Prius.

 

It depends on your terrain too. I have a 38 mile commute to work each day. I consistently average 55-58 mpg to work, but by the time I get home the overall daily mpg comes in in the 50-52 range.

Obviously I have more opportunities to "glide" on the way to work (more downhill) and less on the way home. Inevitably, there is more stop and go driving coming home. I work 7:30am to 4:30pm each day and usually beat rush hour in the morning. That helps too.

 

^^^
do not know. What did you have before and what do you have now? Please indicate size, make and model. If they were different, the newer ones could have more rolling resistance than the previous ones.

Even if they were identical, see Tire Tech Information - Tire Rolling Resistance Part 3: Changes to Expect When Switching from Worn-Out to New Tires.