08-27-2021, 04:56 PM | #1 |
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Bought a used m340i xdrive
Featured on BIMMERPOST.com Took it to two BMW dealers since I obviously still have warranty on it, and one said they test drove another model which did the same noise, and said this was normal. Other dealer/shop foreman test drove with me, checked some things out and said everything was normal and that this could be a turbo noise. I reiterated to him that this does not sound like a turbo noise So, I would like to just test drive another m340i out there in the Tri-state area if anybody is willing to just tell me or let me test out if other models are doing the same sound and get to the bottom of it as I don't think the sound I am hearing should be normal even if it is. |
08-27-2021, 07:03 PM | #2 | |
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08-29-2021, 12:42 PM | #4 |
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Also would like to hear a m340 with MPE in person if anyone in the area has one that would be awesome as well, but want to sort this noise thing out more importantly
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11-23-2021, 11:29 AM | #5 |
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bump, please guys this is an issue plagued by many m340i models, I am sure some people have noticed it on theirs. This is unacceptable noise to be "normal" for a car of this price and caliber.
I've tried getting it fixxed at 3 different service centers and they bring in another m340 which does the same thing and say its normal and will not go further. Even though I told them I can bring them a model in person that does not make the noise at all which is a 2021 m340 xdrive that I was in at an Independent shop |
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11-23-2021, 04:00 PM | #6 | |
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11-23-2021, 04:18 PM | #7 |
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I also have a '21 and have not noticed this issue. I think the only main difference engine-wise between the '20 and '21 is the mild hybrid system.
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11-23-2021, 08:42 PM | #8 | |
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Inde shop said same thing one of the mechanics had a 2021 and no noise. They said the noise seems to be coming from high pressure fuel pump/turbocharger area. Allthough to me, it doesn't seem like any of those things going by the noise. It sounds almost like a diff noise so more likely to be pulley, belt, tensionor, bearing, something of that sort because it gets more rapid is you accelerate and a little louder. I will keep pursuing it because it drives me absolutely nuts as the car is perfect otherwise. There are a few high quality youtube videos of the 2020 POV drives where you can hear it on light and steady acceleration. That's why I think this is a 2020 model problem Last edited by denius; 11-23-2021 at 08:45 PM.. Reason: wanted to add something and didn't want to post again |
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11-24-2021, 04:07 PM | #9 |
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Just wondering my next course of action, I would love to know exactly what the issue is and I would spend my money on it once just to fix it once and for all but I don't want to go replacing stuff and not fix the issue. If the 2021 models don't do it and the 2020s do when the only difference between them is the mild hybrid system then there has to be something I can do to fix it, or make a dealer fix it. But they won't listen. Don't know what to do : /
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11-24-2021, 09:23 PM | #11 | |
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11-24-2021, 11:34 PM | #12 | |
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I am at 20,500 miles and have no idea what you guys are talking about. This has been one of the best BMWs so far but I won't buy one used at all. Hopefully factory warranty & CPO should cover whatever OPs actual problem is.
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2020 G20 M340 xDrive - Portimao Blue - ZDA|ZPP|ZPX|1CR|1PE|6NW|6WD
2016 F10 535i xDrive - AW - Retired 2011 E92 M3 - AW……………....ED April 29th, 2010 - Retired 2007 E92 335i -Space Gray.....ED Oct 19th, 2006 - Retired |
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11-25-2021, 12:22 AM | #13 | |
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11-25-2021, 08:21 AM | #14 | ||
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11-25-2021, 10:25 AM | #15 | |
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11-25-2021, 09:48 PM | #16 |
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11-25-2021, 09:51 PM | #17 | |
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This HQ video if you have headphones especially and turn volume up you can easily hear the noise from timestamp 2:50-2:55 I made a comment as well. This is the exact noise I am talking about, Always hearing it when pressing throttle and mostly low rpms just a constant chirping/ringing noise of some sort. Loving the car as well aside from this sound |
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11-26-2021, 12:03 AM | #18 | |
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Am I the only one thats not hearing anything in that video. Not saying its not there, I am just not hearing it.
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11-26-2021, 12:13 AM | #19 |
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As I said, would be better heard with headphones and max volume on pc, listen at around 2:45-2:55 when accelerating from stop or slow speed. Very noticeable, distinct sound that I have not heard probably any vehicle make while accelerating. I can hear it very easily in that video in that time frame. On phone or something it would be harder to hear obviously
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11-28-2021, 08:51 AM | #20 | |
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11-28-2021, 10:05 AM | #21 |
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It is seeming more and more evident, that the 2019-21 m340's are plagued with all kinds of odd gremlins, from the several hundred posts over this time frame. I do not see anywhere near as many for the 330i of this time frame.
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11-28-2021, 10:10 AM | #22 | |
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Last edited by denius; 11-29-2021 at 09:04 PM.. |
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