noise

Noise is unwanted sound considered unpleasant, loud or disruptive to hearing. From a physics standpoint, there is no distinction between noise and desired sound, as both are vibrations through a medium, such as air or water. The difference arises when the brain receives and perceives a sound.Acoustic noise is any sound in the acoustic domain, either deliberate (e.g., music or speech) or unintended. In contrast, noise in electronics may not be audible to the human ear and may require instruments for detection.In audio engineering, noise can refer to the unwanted residual electronic noise signal that gives rise to acoustic noise heard as a hiss. This signal noise is commonly measured using A-weighting or ITU-R 468 weighting.In experimental sciences, noise can refer to any random fluctuations of data that hinders perception of a signal.

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  1. N

    Drivetrain knocking noise when cold?

    Hi, I just wanted to check in with others to see if I have a potential issue. When I pull away 'cold' - ie: car hasnt been used for a few hours (or first thing in the morning) there's a slight knocking noise coming from the front of the car...if I was to describe it, it'd be like the sound of...
  2. C

    Flapping noise under car

    Hi, can anyone offer me some help with a something that happened yesterday... I approached a set of traffic lights at suitable gentle speed and noticed that my steering wheel was juddering, this continued for a while even after the car had come to a stop. I thought nothing more of it but then...
  3. G

    MG5 knocking noise from rear

    I have an intermittent knocking noise in my MG5 when going over bumps. From the driver's seat it sounds like it comes from the rear nearside. I tried emptying the boot, taking out the boot cover, checking doors and boot fitment, all to no avail. Today when checking for anything loose, I noticed...
  4. Cocijo

    Has anyone actually had their sunroof noise fixed? What was done?

    There’s quite a few posts about sunroof rattle/creaks on the ZS - I also have a rattly sunroof. I wondered if anyone has actually had the issue rectified and what was done to cure it?
  5. M

    Loud braking noise with MG Pilot, and roll back on hill

    My father's one month old ZS EV is making a loud, strange, disconcerting noise when the MG Pilot is decelerating, especially when coming to a complete stop (traffic jam assist?). Only tested in KERS mode 3. It doesn't make the sound when using the brake pedal. The best way I can describe it is...
  6. A

    Squealing Noise In Reverse

    Hi Everyone, My MG ZS EV makes a squealing noise from time to time when I put the car into reverse. I assume this is related to the breaks, but is it common and should I get it fixed at the dealership? Or is it just a normal issue that some cars can have if you rarely use the breaks. Thanks!
  7. N

    External Noise Generator

    ...out of pure curiosity as I've not heard it myself - does the car have an artificial sound that plays under a certain speed?
  8. D

    Mg Zs auto 2018 clinking noise from chassis

    I have recently purchased a 2018 mg zs excite petrol 1 litre turbo. Just noticed when I slow down and become stationary I hear a clink noise from outside. Sound like it’s coming from the chassis but can’t be sure. It’s hard to describe the sound but bit like if you tapped a radiator that noise...
  9. hermitdave

    Flywheel noise

    I hear a distinct noise of something significant rotating at low speeds. It disappears when car hits 10 mph. I’m certain this isn’t pedestrian warning system as it has a distinctive whistle is similar to Leaf. Has anyone that observed this?
  10. S

    MG5 Motor and transmission noise

    My MG5 makes a high pitched motor/transmission whine when accelerating or slowing, especially at lower speeds. Quite a nice soothing sound actually. :-) But there is a lower pitched rougher grating/rumbling sort off noise quite noticeable when going into overrun, regardless of kers setting, at...
  11. E

    MG5EV Wind noise on drivers side at 70 mph

    I love my MG5EV but there is a very annoying wind noise which appears to come through the drivers window as soon as you got 70mph. I have taken the car into the garage twice and they agree the noise is there but cannot find the reason for it. Yesterday I was told that they tested another...
  12. Cocijo

    Knocking noise from the sunroof area!

    I’ve posted my experiences so far on other threads (sorry if I hijacked your thread?). I thought I would start a thread detailing my experiences so that these might help others with a similar issue. Funnily enough I was only thinking that after about 5000miles my car has, apart from the odd...
  13. A

    Quiet "Snoring" Noise in the Cabin

    Hello fellow MG ZS EV owners, First-time poster here! I recently noticed that my MG emits a very faint "snoring" noise in the cabin from time to time. It's not a nuisance, but I wonder whether that's the battery cooling in action. Does anyone know what that is? Thank you and Happy Easter...
  14. Stuwit46

    Has anyone noticed a new electronic noise lately coming from the MG5 dash?

    May be an odd question, but has anyone noticed a new noise lately coming from the dash. It’s an electronic noise, not a mechanical one. I initially thought it was when apple car play was activated but it doesn’t appear to be. I will continue to put the noise and situation together to try and...
  15. BeekeeperMG5

    Clicking Noise

    Hello, We are due to pick up our new MG5 #teamblue, this Saturday. Dealer rang to say they are preparing the car and they are having issues trying to charge it. It is making a clicking noise when they try to trickle charge it. Any idea what the problem might be? Thanks in advance.
  16. N

    Noise from Motor or Transmission.

    Hi all I have owned a ZS for month now with abot 5000 miles on the clock , of which 500 miles are down to me. Getting to like the car the more I drive it after tentative start But there's a noise from the drive train that is niggling me and not sure if it's normal for a electric car. The noise...
  17. Cocijo

    Whining- Motor/gearbox noise

    Do any of you technical people know exactly what causes the light whining noise (which is normal) on our cars? Is it the electric motor bearings? Is it the transfer gears within the electric drive transmission system? I know that a lot of electric motors these days are near silent.
  18. Cocijo

    Low speed wind noise - roof bars?

    Does anyone get wind noise at low speed (up to about 30mph) from the roof area? I’m guessing it’s the roof bars? It seems worse on some days than on others.
  19. T

    Heating ventilation noise

    I picked up my new MG5 last weekend 30th Jan and I am really enjoying the car. I have noticed a loud humming noise from the ’engine’ bay, which you can also hear from inside the cabin. I can only hear it when stationary, say on the drive way. When I press the Heating control On/Off button on...
  20. T

    Pedestrian Alert noise

    I have been learning about the Pedestrian Alert noise on EV’s. I cannot find anything about it in the MG5 user manual, however first time I thought it was fault noise from the heating/ventilation system so pressed the ventilation on off button on the left of the ventilation controls and the...
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