Here are the current promo codes for March.  To date only Grab has been issuing promo codes.  I will keep you posted if I get word of any new ones coming out from other ride sharing apps.

Grab promo codes

Promo code: GRABW1260

• P60 discount on three (3) GRAB rides from March 19 to 23, 2018 only
• Can be used with grabcar, grabshare, grabcar (6 seater) grabcar+ premium
• Limited daily redemptions only

Promo code: GRABWE1140

• P40 discount on three (3) GRAB rides from March 17 to 18, 2018 only
• Can be used with grabcar, grabshare, grabcar (6 seater) grabcar+ premium
• Limited daily redemptions only

Promo code: GRABW1150

• P50 discount on four (4) GRAB rides from March 12 to 16, 2018 only
• Use from 9am to 5pm and 9pm to 5am
• Can be used with grabcar, grabshare, grabcar (6 seater) grabcar+ premium
• Limited daily redemptions only

Promo code: GRABWE1080

• P80 discount on three (3) GRAB rides from March 10 to 11, 2018 only
• Can be used with grabcar, grabshare, grabcar (6 seater) grabcar+ premium
• Limited daily redemptions only

Promo code: GRABW1050

• P50 discount on four (4) GRAB rides from March 05 to 09, 2018 only
• Can be used with grabcar, grabshare, grabcar (6 seater) grabcar+ premium
• Limited daily redemptions only

Promo code: GRABWE980

• P80 discount on three (3) GRAB rides from March 03 to 04, 2018 only
• Can be used with grabcar, grabshare, grabcar (6 seater) grabcar+ premium
• Limited daily redemptions only

Promo code: GRABW950

• P50 discount on five (5) GRAB rides from February 27 to March 02, 2018 only
• Available daily from 8am to 5pm
• Can be used with grabcar, grabshare, grabcar (6 seater) grabcar+ premium
• Limited daily redemptions only