Hi, welcome to just Answer.
Honestly, it would be better to purchase a new emblem from the dealer, the new ones come with a special sticky backing that can be easily installed and will give the correct depth appearance. Otherwise you can adhere the original one with 3M spray adhesive, but there's a chance it may not hold well. You'll need to spray the adhesive onto both the emblem and the car sparingly and be sure both surfaces are cleaned before the application.
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A.S.E. Master Technician, Advanced Level, Smog - European, Domestic, & Asian -- Car Category Mentor