This is the response I got from them:
Dear Mr. ____,
We write in reply to your message posted on our website on February 23, 2012, regarding the alleged low power and knocking sound on the engine of your Hyundai Accent 1.4
We regret to inform you that we cannot accede to your request for unit replacement, as it is not the proper remedy for such concern. Your Hyundai Accent is covered by a warranty of five (5) years or 100,000 kms, whichever comes first. The basic warranty coverage provides:
“Hyundai warrants that it will either repair or replace any component originally manufactured or installed by Hyundai that is found to be defective in material or workmanship under normal use and maintenance for a period of 60 months or 100,000 kilometers, whichever comes first.”
In order to address any concern on your Hyundai Accent, we would like to request that you bring your unit to your servicing dealer, Hyundai Quezon Avenue (HQA), for proper diagnosis and evaluation. Ms. Divine Ramil, Customer Relations Manager of HQA will coordinate with you regarding your preferred schedule of visit and other related arrangements.
Thank you for your continued patronage of our product and services.
Very truly yours,
Hyundai Asia Resources, Inc.