I drove a Chilean Plate car here for 4 years, My Nissan model had few spare parts here, plus mechanics were not that familiar. Not all insurance companies here will insure a foreign car owned by a foreigner. If your car breaks in the middle of nowhere
wait for spare parts.....!!!
Driving twice a year from B.A. to Santiago gets pretty old...!!!! 1500 kmts each way...!! too long to enumerate the blizzards, avalanches, chains on all four wheels, waiting at border crossing below cero. Bad rap by AFIP/customs border agents, claiming you are braking the law?? by staying 5 months and 20 days? etc. stressful
Driving here with Chilean plates attracts negative comments from truck drivers on the road," Hijo de Puta" is the least offensive

When you park at night somewhere and you return Chileno Puto will be written on your rear
window...!!
These are a FEW of the drawbacks od a Chilean License Plate Don't feel discouraged
At every traffic control you WILL get stopped and request all documents and first aid kit, etc