Most likely is the folding seats.

anyone having "yek yek" sounds from the rear left absorber when when going over bump or rough roads? my car is less than 1/2 year... 
removed all the things from the boot including boot tray, still the noise there...

Is is the same sound as me?

U try to lean on the rear seats and bounce up and down. If u hear the nyek nyek sound, try to locate where the sound come from.

It also happened to me last time.. Its from rear seat lock.. what you need to do is put tapes on it and later on if you go to SC, ask them to tight up the nut.. Settle!!

I did my 30k km service today and there are good news, bad news, and worse news.

Good news
They will change my inner door rubber that kept coming. And they finally (I hoped!) found out the cause of my 'nyek nyek' left rear sound. I insisted the pomen to test drive with me, luckily within SC carpark got a road hump, so a short drive over it and the pomen confirmed there is a problem, unlike last time.

Bad news


Worse news

Well at least for me. I don't know for sure until they replace the beam and I drive over the same conditions.

It might be too for ur case, but since there seems to be multiple causes, best if you can bring the SC pomen for test drive and let him diagnose the problem, and you can suggest to him about my case.

At least I hope by sharing, members here can get some ideas for resolving their similar problem. I too am frustrated becoz my car is <1.5 years and I made this complaint 6 mths ago but they said NO PROBLEM FOUND.

it come and goes on my car... now getting louder and persistent... u need to bring back to SC and test drive with them :-(... quite a few my friend 2017 city model also having this issue... 

Seems like Honda did cost cutting on the suspension material or something. In this forum I only seem to find this problem happening on FL City and not so on pre-FL.

sent to them, but after car in SC workshop for 2 hours, then they request for a joint test drive and surprisingly the noise gone... now the noise reappear... wondering what happen in between as SC claim they did ntg on my car during that 2 hours...

i will revisit and ask for a join drive test with them when the noise become unbearable... 

Is your abnormal "nyek nyek" sound very annoying? If yes and consistent then u go SC and straight request the SA or for foreman join drive test. Same case to how Babylon requested for. If not too noisy at the moment then maybe become my case...

It is exactly same as mine!! I think mine comes from front.. but it only appear when go through hump too fast.. however after few days trying the sound for mine car seem disappear already. i book 26 october for them to check the car sound.. im afraid the sound wont be appear when they check.
This is the sound i got, listen to 0.08, 0.22, 0.33. Its comes from front.
https://vocaroo.com/i/s1PcK2vZaxEW

Just got back my car.. they say mine is front lower arm got problem.. now need to wait 3 weeks for them to order the parts..

Honda car quality control really bad.. my car only 1 month old then already got a lot issue.. at first is replace the trunk opener spring now is replace the lower arm all happen in one month

All under warranty, but the problem is if you're a working person, you need to take a day off to send the car in for checking, and then another day off to make the replacement. Habislah the annual leaves just to bring the car in for check and repair!
I never did say that engine could be damaged driving at 180kmph, only that its ECU throttled at that speed. I did say that based on the car lightweight, bouncy suspension, light steering & skinny tyres, I only dare drive City to 150kmph. Anymore and i feel that risk of losing control is much higher.

Yeah, mine too appears when going over humps and rough bumpy roads but its at the back left. You need to able to replicate the sound during test drive with ur SC pomen otherwise they won't know where the sound comes from and just conclude as NO TROUBLE FOUND (that's what they wrote in my previous complaint).

Is it rusty??? 🤯

less than a month 

I was considering that too. But they cant give me the VLT below jpj compliance. So i decided to go outside and tint Because 70% vlt is too bright

yes mine unit too, gonna ask sc check next service
mine too, but much smaller spot at driver side upper side mirror part. common case in honda taiwan