Avis Rent A Car 100 Clarendon St, Boston, MA02116 With so much to see and do in the Boston area, having a car can allow you to explore many different areas. Avis Rent a…More Car, located at the Clarendon Street garage, has compact sedans, minivans, SUVs and luxury vehicles for your convenience. Specific vehicles can feature in-car navigation and child safety seats. Customers who are between 21 and 24 years old can still rent a vehicle, though they must have a major credit card and pay a fee of $27. This location allows you to return your rented vehicle at a different Avis.