Do I need to tip my Silvercar concierge? Silvercar by Audi May 30, 2018 15:49 Updated We are at your service, no gratuity necessary. Related articles How Many Miles are Included with the Rental? What's the policy on having pets in a Silvercar? What is the price per day of a Silvercar rental? How to confirm your 3rd party reservation. What is the minimum driver age?