There is no 'best credit card for petrol' in Singapore. It all boils down to your monthly spending habits and which petrol station you frequent. Different cards can get you different discounts based on their minimum card spending requirements. Here are the best petrol savings cards and their respective discounts: Citibank Cash Back card – 20.88% petrol discounts at Esso and Shell stations. OCBC 365 –20.2% and 26.8% petrol discounts at Esso and Sinopec stations, respectively. UOB One Card – 21.15% and 24% petrol discounts at Shell stations and SPC, respectively POSB Everyday Card – 20.1% petrol discounts at SPC stations