[bousinou228i]

Hello all,

I recently purchased a 228i M Sport with the n26 engine. I love the car! One of my fav BMWs I've owned for sure.

Ive had it for about a month now and there has been two instances on cold-morning starts where about 15-20sec into the start up cycle the exhaust makes a noise similar to the flap in my old 335, only to disappear followed by an electronic sound. (video link below)

It is still under the factory warranty and im wondering if I should make an apt. Have any of you experienced this?

Thanks in advance!
Jason

https://www.youtube.com/watch?v=dgtT_kB3aeU

[Rayscott]

I own a 228ix Msport. Have never heard that sound even when I switched to a Dinan muffler. I would take it in.

[simsimma777]

Originally Posted by bousinou228i

Hello all,

I recently purchased a 228i M Sport with the n26 engine. I love the car! One of my fav BMWs I've owned for sure.

Ive had it for about a month now and there has been two instances on cold-morning starts where about 15-20sec into the start up cycle the exhaust makes a noise similar to the flap in my old 335, only to disappear followed by an electronic sound. (video link below)

It is still under the factory warranty and im wondering if I should make an apt. Have any of you experienced this?

Thanks in advance!
Jason

https://www.youtube.com/watch?v=dgtT_kB3aeU

The sound at the end is normal. It's the exhaust flap opening after a cold start. Your car should do that all the time about a minute after starting the car.

The rattle in the beginning is not normal but only a minor issue. I believe its a loose flap or just a random cold weather thing. There are other posts on this forum about it who were hearing the rattle consistently, and took it to the dealer to have it replaced under warranty.

I've only had that happen on 2 occasions on really cold days (each a about a year apart), and never bothered doing anything about it.

[phljeeper]

Definately an odd sound and not what my 228 sounds like.

[xantdieselx]

Originally Posted by bousinou228i

Hello all,

I recently purchased a 228i M Sport with the n26 engine. I love the car! One of my fav BMWs I've owned for sure.

Ive had it for about a month now and there has been two instances on cold-morning starts where about 15-20sec into the start up cycle the exhaust makes a noise similar to the flap in my old 335, only to disappear followed by an electronic sound. (video link below)

It is still under the factory warranty and im wondering if I should make an apt. Have any of you experienced this?

Thanks in advance!
Jason

https://www.youtube.com/watch?v=dgtT_kB3aeU

That my friend is more than likely a bad exhaust valve. Take it in for service I believe there is a TSB for it. Had mine replaced under warranty earlier this year for the same issue.

[Rayscott]

Originally Posted by xantdieselx

That my friend is more than likely a bad exhaust valve. Take it in for service I believe there is a TSB for it. Had mine replaced under warranty earlier this year for the same issue.

This is why I like this forum, people always willing to give good advice.

[xantdieselx]

Originally Posted by Rayscott

This is why I like this forum, people always willing to give good advice.

[bousinou228i]

Thanks for the replies everyone! I made an apt to get it checked out. Will follow up with diagnosis if anyone is interested.

[bousinou228i]

Apparently, my dealer says this noise is "normal" and nothing to worry about?

[MessageMan]

Have had this issue occur on my 2016 M235i maybe 2 or 3 times. After much research I have deduced it to be loose screws on the exhaust flap. Apparently the ones made for the F22 were not of sound quality. It is a minor issue that you can have replaced under warranty. I have been meaning to but have not gotten around to it as I work so much.

[lateapex'er]

Originally Posted by bousinou228i

Apparently, my dealer says this noise is "normal" and nothing to worry about?

That is odd/concerning. I also own a 228i, when I had my stock exhaust on, it never made any sound/rattle as shown in the video. As others have said the electronic flap sound is normal. I would try a different dealership.

[overcoil]

Originally Posted by bousinou228i

Apparently, my dealer says this noise is "normal" and nothing to worry about?

Can u make another video with the camera microphone a little further away and directly behind the exhaust...I'm just wondering if you initial video had some acoustic weird thing going on, even if u think your video replicates it well.

[bousinou228i]

The dealer did say they looked it over and "tightened" everything up. I'm hoping that means the screw. It hasn't happened again, yet.
Here is another longer video with much more of the sound.

https://youtu.be/bzDeUrrqZVE