The multi function Display says it all....
I Drove 65 to 74 mph with traffic ( 4 miles over the speed limit) for all but 50 miles of the trip.
The return trip averaged 40.1 mpg. ( Slower speed most likely)
one of the 4 wheelers is a 250 and the other is a 90cc. the trailer is 5 by 8 with a steel mesh floor.
The car handled well and only labored at speeds over 70.
I dont suggest we all put a trailer hitch on our Prius, but my results were satisfactory for limited use.
The hitch required a very small modification to the plastic under the car...I admit I was aprehensive about it.
but after seeing the 1 inch by 4 inch part removed...I was convinced it was nothing to worry about.
The wiring for the trailer lights is as follows
( I only used brakes and running lights...I did NOT connect the trailer lights with turn signals)
I suggest purchasing a trailer light module from your favorite auto parts store if you want turn signals
I used brown for parking lights and blue for stop lamps.
I Spliced into the prius harness below the rear gate latch and found a rubber grommet under the spare tire to route the wire outside.