QUOTE(toonny @ Jan 26 2016, 05:06 PM)
Rusted suspension? Is it the noise sounds like "ngek ngek"? If it is, try request to replace lower arm bush. If is "kruk kruk" noise, then replace bump stopper. Btw, I'm waiting for the parts arrival for bump stopper.
I haven't meet with "tik" sound on windscreen, but what I encounter is the noise like stone hits my windscreen, very loud!
Do you able to source where it comes from? Under what circumstances it occur? Try apply some pressure / force to push on your MZD, the panel beside the screen.
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About this "DONG" sound, apparently I am in the same case with you. After car wash, it happens too (sometime only). I make this as habit. Before you move your car, press on Brake, put the gear into "N", release handbrake, let the car roll itself. See what other inputs can get from the members here...

QUOTE(krul88 @ Jan 26 2016, 09:38 PM)
yes i heard mazda3 and cx5 got same problem. Twice mazda replaced my m3 cbu lower arm bush and after rain still sound kruk krux whenver go over a bumper. i think is a design issue where water gets into it and mazda glenmarie told me no safety issue just a the sound. next service maybe a report again and see if they replace it again.
QUOTE(wkc5657 @ Jan 27 2016, 11:55 AM)
"Tik" sound most probably something gone lose inside the dash board, mine also having the same, ignore this for the time being as I don't think service centre will refit it unless it is really loud and prominent. Most probably I would want to do further soundproofing in the future and fix this at the same time.
The DONG sound is sticky brakes, not an issue. Mostly happen after an extended time of the car idling (like overnight). Can minimise the occurrence by gently putting the car to a stop before pulling the handbrake.
Yes the 'tik' sound on the windscreen is very loud like a stone hitting your windscreen. Still no idea where it is from but it sounded like it's from the rear mirror area though.
The suspension sound is "ngek ngek" sound. Will request for the lower arm brush next service.
And thank you all for the info on the "DONG" sound. Will try them out.