Let's compile the codes here

UBER
Use the promo code “UBERIS4ME” to get RM20 worth two free rides. Valid for first time users in 2017.
Use UBER3RDBDAY in your Uber app to enjoy discounted rides! Valid for all trips in Malaysia where Uber is available. Maximum discount per trip is RM5. You only need to apply the promo code once.
Use SC2016MY for first 3 free rides worth RM10 each. For all other rides, you will earn 20% cashback when you charge your Uber rides with Standard Chartered.
Uber promo code : LUNCHSAVINGS, PMSAVINGS, SAVINGSPM, valid till 19 May 2017 (Friday)
Use POWEROF3 for 3 free rides worth RM7 for the week
MYTEKSI/GRAB

GRABPAYMAY in conjunction to RIDETOSAVE code used with grab pay in April. (selected customers only)
GRABLRT17 for rides to/from LRT/MONORAIL using Grab Share.

GRABPAY with MBB MasterCard (rm6 off x 6 rides)
Code : MBBMERDEKA
Valid from now till 16 Sept

GRABRAMADAN - RM5 x 2 per day ( till 31st May 2017)
SECURE5 - RM5 x 5 (till 31st May )

GRABRAMADAN - RM5 x 2 per day ( till 31st May 2017)
SECURE5 - RM5 x 5 (till 31st May )

For Grab try:
NEXXSD3 - RM3 (Eligible Members)
NEXXSD5 - RM 5 (Eligible Members)
GRABTATLER - RM30 X 2 (Eligible Members)
GRABSPRAYA17 - RM5 X 2 pick up or drop off at Subang Parade 26 May to 27 June
GRABDCM17 - RM5 X 2 pick up or drop off at Damansara City Mall 29 May to 31 July
PUTRARAYA17 - RM5 X 4 pick up or drop off at Sunway Putra Mall 26 May to 2 July
GRAB4BURPPLE- NEW users RM15 X 2 from 17 May – 31 Dec 2017

Thank you

Is there a way to create multiple new accounts to take advantage of new user free rides?

yes but you'll need to use other/new credit cards + new tel number.

only phone number is enough, now can pay cash

Guys
Free 2 Rides Worth RM7 for new signups!
code : UPCHALLENGE56