With all branches involved, more than 5,000 garage customers are being invited to participate in the promotion, with the opportunity to gain rewards of up to £500.
The campaign runs for one month, throughout November.
In return for hitting specified spend targets during the month, and subject to qualifying terms and conditions, customers can earn £100, £250 or £500 to spend in the festive season.
Amanda O’Reilly, head of marketing at GSF Car Parts, said: “This year we’ll be offering Love2shop vouchers or gift cards.
“We’ll be getting these to customers before Christmas, in time to lessen those seasonal bills.”
Love2shop vouchers and gift cards are accepted by the vast majority of big high street retailers, as well as a host of hotels, restaurants, theme parks and more.
Garages are advised to look out for details as the promotion is by invitation only, for existing customers.