Ariel Winter -- Buys New Mercedes ... PAYS IN FULL

Unlike most 16-year-olds -- who scrape together money from their part time job to go halfsies with their parents on a used Ford Taurus -- "Modern Family" star Ariel Winter just picked up a brand new Mercedes ... and paid for it in full.Winter…

Shakara Ledard Shakira Shana Hiatt Shania Twain