Benefits of using a prepaid fuel card include saving money on gas purchases and avoiding interest charges that could accumulate when using a credit card instead, writes Fuel Budget. In addition, prepaid fuel cards provide a pay-at-the-pump option for people unable to obtain a credit card.
In addition to discounts that some gas retailers provide when customers use a prepaid gas card, it may also be possible to buy a prepaid card at a substantial discount, writes Planting Our Pennies. For example, grocery chains such as Harris Teeter and Publix sometimes offer $50 prepaid gas cards for $40 to people who spend a minimum amount on groceries. For someone who buys groceries at one of these stores anyway, this can provide an additional 20-percent savings on gasoline.