I got Grab to MNL airport on 31/Mar/2024 and was not charged a foreign transaction fee when using a foreign credit card
Grab PH is now charging a 3% foreign card fee (Grab Car and Grab Food)
- it's itemised on the food ordering page, but not even mentioned on the ride booking page
(click the tiny "i" next to your choice of vehicle type on the confirmation page to see the fee!)