Looks to me like importing "new" versus buying it there, you just might come out even or with a slight loss - but if you import you'd also have to navigate the shipping and port charges and the aduanas charges and many many others.
The taxes alone for me would make it prohibitive.Ìý This article details some of the charges which will vary based on the vehicle:
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Also you don't know if they will allow as "new" a vehicle with a few dozen or perhaps several hundred miles on it - this matters because only returning Uruguayan citizens are allowed to bring back with them a used vehicle:
The first link gives two examples of a 1.6l vehicle, one diesel and one gasoline engine, worth $10,000 USD CIF (Cost, Insurance, Freight).Ìý Taxes are based on the CIF value of the vehicle.Ìý The $10,000 diesel vehicle could end up after all the taxes are applied, costing as much as $40,400 USD.Ìý The gasoline (nafta) vehicle would be somewhat less.Ìý Larger engines than the 1.6l will cost more, too.
Just some of the taxes they list:Ìý Arancel de importación outside MercoSur, 23% of the CIF price; tasa consular, 5% of CIF; IVA, 22%; impuesto IMESI, 34.5% for gasoline, 115% for diesel.Ìý There are other charges they list, too.