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2021 Kia K5 - Wolf Grey AWD
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Hey everyone, picked up my new K5 a few days ago and really liking it so far. The looks and compliments in parking lots hasn’t got old!
The past couple of days I’m noticing the car runs a little rough in park or even in gear but not moving.
What’s most noticeable is a rattle I’m hearing what sounds like under the car - maybe the muffler or something vibrating in park. Once I hit the gas even a little the engine is smooth and the rattle is gone.

Anyone else notice a rattle or an unusually rough idle? I could ignore the idle but the rattle’s driving me crazy!
 

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Hey everyone, picked up my new K5 a few days ago and really liking it so far. The looks and compliments in parking lots hasn’t got old!
The past couple of days I’m noticing the car runs a little rough in park or even in gear but not moving.
What’s most noticeable is a rattle I’m hearing what sounds like under the car - maybe the muffler or something vibrating in park. Once I hit the gas even a little the engine is smooth and the rattle is gone.

Anyone else notice a rattle or an unusually rough idle? I could ignore the idle but the rattle’s driving me crazy!
Yes, I have the same issue. However, it is not related to the A/C at all. It actually occurs AFTER you fill up your gas tank to full. This rattling noise continues during normal idol for the first few gallons of gusts you burn. It disappears after that.

I am glad that offers have the same issue. It may be a saftey issue and should be recalled by KIA since it is a well documented issue.... I hope they read this because up until now the dealership blows me off about it!
Hey everyone, picked up my new K5 a few days ago and really liking it so far. The looks and compliments in parking lots hasn’t got old!
The past couple of days I’m noticing the car runs a little rough in park or even in gear but not moving.
What’s most noticeable is a rattle I’m hearing what sounds like under the car - maybe the muffler or something vibrating in park. Once I hit the gas even a little the engine is smooth and the rattle is gone.

Anyone else notice a rattle or an unusually rough idle? I could ignore the idle but the rattle’s driving me crazy!
Yes, I have the same issue. However, it is not related to the A/C at all. It actually occurs AFTER you fill up your gas tank to full. This rattling noise continues during normal idol for the first few gallons of gusts you burn. It disappears after that.

I am glad that offers have the same issue. It may be a saftey issue and should be recalled by KIA since it is a well documented issue.... I hope they read this because up until now the dealership blows me off about it!
 

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Yes, I have the same issue. However, it is not related to the A/C at all. It actually occurs AFTER you fill up your gas tank to full. This rattling noise continues during normal idol for the first few gallons of gusts you burn. It disappears after that.

I am glad that offers have the same issue. It may be a saftey issue and should be recalled by KIA since it is a well documented issue.... I hope they read this because up until now the dealership blows me off about it!

Yes, I have the same issue. However, it is not related to the A/C at all. It actually occurs AFTER you fill up your gas tank to full. This rattling noise continues during normal idol for the first few gallons of gusts you burn. It disappears after that.

I am glad that offers have the same issue. It may be a saftey issue and should be recalled by KIA since it is a well documented issue.... I hope they read this because up until now the dealership blows me off about it!
I think there are many issues a lot of us are having with the k5, that need to be recall for. Definitely will be contacting my dealer about it.
 

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2021 Kia K5 GT-Line AWD
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I think some of the dealers are really slacking with the pre-delivery inspections. Many of the issues seem to be preventable with a thorough inspection before the car gets into consumer hands.
 

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Yes, I have the same issue. However, it is not related to the A/C at all. It actually occurs AFTER you fill up your gas tank to full. This rattling noise continues during normal idol for the first few gallons of gusts you burn. It disappears after that.

I am glad that offers have the same issue. It may be a saftey issue and should be recalled by KIA since it is a well documented issue.... I hope they read this because up until now the dealership blows me off about it!

Yes, I have the same issue. However, it is not related to the A/C at all. It actually occurs AFTER you fill up your gas tank to full. This rattling noise continues during normal idol for the first few gallons of gusts you burn. It disappears after that.

I am glad that offers have the same issue. It may be a saftey issue and should be recalled by KIA since it is a well documented issue.... I hope they read this because up until now the dealership blows me off about it!
Please keep us updated if they do anything about it...
Yes, I have the same issue. However, it is not related to the A/C at all. It actually occurs AFTER you fill up your gas tank to full. This rattling noise continues during normal idol for the first few gallons of gusts you burn. It disappears after that.

I am glad that offers have the same issue. It may be a saftey issue and should be recalled by KIA since it is a well documented issue.... I hope they read this because up until now the dealership blows me off about it!

Yes, I have the same issue. However, it is not related to the A/C at all. It actually occurs AFTER you fill up your gas tank to full. This rattling noise continues during normal idol for the first few gallons of gusts you burn. It disappears after that.

I am glad that offers have the same issue. It may be a saftey issue and should be recalled by KIA since it is a well documented issue.... I hope they read this because up until now the dealership blows me off about it!
Would the rattling noise always happen every time you fill up the gas tank to full? I’m curious why it would do that
 

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I didn’t really notice the rattling when I first got it. But my first fuel up is when I did. Does it come from the exhaust pipe close by the back tire? Would the dealership be able to do something?????
 

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I have definitely confirmed it after trying multiple things that it always happen after you fill your gas tank up to full. At normal operating idol, in park or in drive the rattle noise. Increase the rpm's slightly it disappears, when returning to normal idol, the noise returns up until you burn a few gallons of gas.... Anyone has any thoughts or can get your dealership to acknowledge it or report it to Kia, please reply. It's annoying, not to mention a possible safety issue...
 

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2021 Kia K5 GT
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So I filled up today and noticed a light rattle coming from the back. Will see if it goes away as fuel level drops. I've.noticed it since I got the car. Didnt think much of it. Now I'll have to pay attention to see if it only happens when the tank is full.
 
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