Knocking noise on my P2

[Brian_Carter]

I noticed a knocking noise on my P2 with standard suspension. It is a literal knock sound from the front left especially when I bump into shallow potholes. If the hole has a sharp edge it would cause a rapid unloading of the suspension.

Basically, the car makes a lot of noise in rough potholes. I have 3 cars currently, and I have used a Nissan Leaf which was a much smoother EV and had a softer suspension. I have had a dealer take a look at it, and they even replaced the front brake discs and pads, but the damn noise is still there!

I am guessing since the brake disc replacement did not fix it, then it is a manufacturer issue. Anyone with similar experience?

 

[Badleroybrown]

I used to hear a similar knocking noise from the front left after installing lowering springs and freaked out, thinking I messed up. Turns out, it was just a misaligned hood catch, and after adjusting it, the noise got way better. Still suspect a bad strut bearing, though. Since I went aftermarket, I doubt the dealer will help, so I’ll probably have to grab a new bearing myself. The noise only pops up on shallow bumps, like washboard roads, but it’s still annoying!

 

[Samuel110]

I noticed a knocking noise on my P2 with standard suspension. It is a literal knock sound from the front left especially when I bump into shallow potholes. If the hole has a sharp edge it would cause a rapid unloading of the suspension.

Basically, the car makes a lot of noise in rough potholes. I have 3 cars currently, and I have used a Nissan Leaf which was a much smoother EV and had a softer suspension. I have had a dealer take a look at it, and they even replaced the front brake discs and pads, but the damn noise is still there!

I am guessing since the brake disc replacement did not fix it, then it is a manufacturer issue. Anyone with similar experience?

I have this exact experience on my driver side (front), I didn't really think it is a big issue, I probably need to get it checked.

 

[turbocharged_titan143]

I noticed a knocking noise on my P2 with standard suspension. It is a literal knock sound from the front left especially when I bump into shallow potholes. If the hole has a sharp edge it would cause a rapid unloading of the suspension.

Basically, the car makes a lot of noise in rough potholes. I have 3 cars currently, and I have used a Nissan Leaf which was a much smoother EV and had a softer suspension. I have had a dealer take a look at it, and they even replaced the front brake discs and pads, but the damn noise is still there!

I am guessing since the brake disc replacement did not fix it, then it is a manufacturer issue. Anyone with similar experience?

Bad strut bearings I believe. Have it checked by a suspension specialist to know the issue.

 

[Brian_Carter]

I used to hear a similar knocking noise from the front left after installing lowering springs and freaked out, thinking I messed up. Turns out, it was just a misaligned hood catch, and after adjusting it, the noise got way better. Still suspect a bad strut bearing, though. Since I went aftermarket, I doubt the dealer will help, so I’ll probably have to grab a new bearing myself. The noise only pops up on shallow bumps, like washboard roads, but it’s still annoying!

Thanks for sharing! I haven’t touched the suspension, so I doubt it’s a hood catch issue for me, but I’ll definitely have the strut bearing checked. That noise on shallow bumps is exactly what I’m dealing with, it is so annoying.

 

[Brian_Carter]

I have this exact experience on my driver side (front), I didn't really think it is a big issue, I probably need to get it checked.

Yeah, it’s probably worth getting it checked, just to be safe. It’s not a huge issue, but the noise can get pretty annoying.

 

[Brian_Carter]

Bad strut bearings I believe. Have it checked by a suspension specialist to know the issue.

Good call, I’ll have a suspension specialist take a look tomorrow and see if that’s the issue. Thanks

 

[Redi3s]

Bad strut bearings I believe. Have it checked by a suspension specialist to know the issue.

I don't think that's it. Polestar is looking at the wrong components. I had mine changed and the issue got worse.

 

[Redi3s]

I noticed a knocking noise on my P2 with standard suspension. It is a literal knock sound from the front left especially when I bump into shallow potholes. If the hole has a sharp edge it would cause a rapid unloading of the suspension.

Basically, the car makes a lot of noise in rough potholes. I have 3 cars currently, and I have used a Nissan Leaf which was a much smoother EV and had a softer suspension. I have had a dealer take a look at it, and they even replaced the front brake discs and pads, but the damn noise is still there!

I am guessing since the brake disc replacement did not fix it, then it is a manufacturer issue. Anyone with similar experience?

I am tending to believe the issue is other components. Not just the strut mounts. This mysterious suspension issue is...IMO...also the cause for such loud and harsh and booming interior noises in this car. There is DEFINITELY something awry with this car's suspension (especially in Performance trim).

Here is a link to my new thread with video recordings of the noise.

https://polestar.forum/threads/theories-on-suspension-clunking-performance-models.167/

 

[BrownFox]

I’ve noticed that the sound seems to occur specifically during left-hand turns, usually when I’m going around 30 mph or faster. It happens when I go over something like a drain cover or when there’s a series of small bumps, like a rumble strip. It’s a pretty noticeable metalic clonk that I initially thought was just a normal sound that all cars make, but now I'm starting to think it’s worth getting checked out. Its definitely not something I’ve ignored, but I’m curious if others have experienecd something similar or if this is something that needs attention.

 

[Redi3s]

So just an update to all...after having my car in the service center for almost 45 days, they finally gave it back to me with a lot of back and forth with myself and the techs. They changed out the sway bar links and it seems to have solved the issue for now. I had done extensive research of suspension parts and issues and narrowed it down to this and the techs agreed to try the solution out. And it worked. Polestar is only tackling this issue by replacing the strut mount bearings but this isn't enough to solve the problem. As suspected, other components were also the culprit. Now the car sounds and drives like a German car with a solid suspension that has a muted strut sound and no clunking. Feels a lot more solid too when on the go...no wandering, no looseness.

Even a small amount of play in the sway bar bushings or links, tie rods, ball joints, etc. can wreak havoc on suspension performance and acoustics. Given that this is a heavy car, I can foresee having to change or service these types of components often.