Applicants for the Sunoco rewards credit card must be at least 18 years old in the United States, according to Citibank. Individuals can submit applications online.
An online application requires a valid Social Security number and photo ID, Citibank states. Many online applicants with American citizenship receive immediate responses. However, if applications require further processing, applicants receive decisions through the mail within 30 days.
In addition to allowing quick payments at the pump, as of September 2015 the Sunoco rewards credit card offers 5 cents off each gallon of gas purchased, reports the company website. Other benefits include additional cards for family members, ATM access and zero liability for unauthorized use.