Esso Singapore is offering up to $20 in rebates for Esso Synergy fuel purchases paid via Mastercard on the Kris+ app. Spread over three challenge periods from June to October 2025, this promotion rewards early Esso Smiles Classic members with KrisPay miles that can be used within the Kris+ ecosystem. Learn how to maximise your savings and why this fuel rebate is worth your attention.
