You'll need a pressure test performed and some evaluation to find the source of the leak. Then from there can determine an action plan.
Use this link to find some shops near you that can help with your concern:
www.repairpal.com/repair-shops
RepairPal Certified shops can diagnose and repair your 2010 Volkswagen Eos. They provide transparent pricing with a minimum 12-month or 12,000-mile warranty on repairs and services.