Since finding 2 hubcaps "missing", I am wondering if I have options as to the styles of hubcaps? Does a particular style affect fuel efficiency? Will going "cap-less" improve gas mileage?
suggest you do a search- there is a long thread on each-first you can go hubcapless, and get an insert at the hardware store for $1 to go into the center of the wheel. Second there is a separate thread, quite long, about the merits of using/removing the hubcaps. Good luck, and welcome!!
I took the plastic wheel covers off the day I bought the car. I am getting 51mpg on average. I have 46k miles on the car and replaced my tires at 41k with Micheline energy savers. I bought my center caps on ebay for about $21.00 complete. Just go to www.motors.ebay and type in prius center caps under parts and accessories. You will find several auctions and buy it now options.