The dealer says that they had this vehicles from 3/29/2016 with mileages around 22000

A dealer is located in MD

Since dealer has it, How can it be registered in CA as new location on 5/25/2016?

they says, it's mileage is around 24000 now.

They saying the carfax has just late updating. Do you think this vehicle has no problem at all if you see the carfax?

thank you