# 2008 Mazda Mazda3 rattle

**URL:** <https://community.cartalk.com/t/2008-mazda-mazda3-rattle/122301>\
**Category:** Maintenance/Repairs\
**Tags:** mazda3, mazda\
**Created:** [August 4, 2018, 11:04pm UTC](https://community.cartalk.com/t/2008-mazda-mazda3-rattle/122301 "2018-08-04T23:04:17Z")\
**Posts on this page:** 6\
**Page:** 1

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**Author:** ![David15](https://avatars.discourse-cdn.com/v4/letter/d/dc4da7/32.png) [@David15](https://community.cartalk.com/u/David15)\
**Post date:** [August 4, 2018, 11:04pm UTC](https://community.cartalk.com/t/2008-mazda-mazda3-rattle/122301/1 "2018-08-04T23:04:17Z")

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There is a rattling noise coming from the rear underside of my car when going over bumps it sounds metallic. It’s mainly the driver side rear but I’m hearing it from both sides. I’ve so far had the stabilizer bar link and sway bar bushings replaced and a left rear lateral link replacement. But I still hear the rattling.

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**Author:** ![COROLLAGUY1](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/corollaguy1/32/7575_2.png) [@COROLLAGUY1](https://community.cartalk.com/u/COROLLAGUY1)\
**Post date:** [August 5, 2018, 10:11am UTC](https://community.cartalk.com/t/2008-mazda-mazda3-rattle/122301/2 "2018-08-05T10:11:50Z")

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Check your trunk, anything loose in there?

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**Author:** ![David15](https://avatars.discourse-cdn.com/v4/letter/d/dc4da7/32.png) [@David15](https://community.cartalk.com/u/David15)\
**Post date:** [August 5, 2018, 10:26am UTC](https://community.cartalk.com/t/2008-mazda-mazda3-rattle/122301/3 "2018-08-05T10:26:52Z")

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Thanks for replying. No nothing in the trunk loose. That’s the first thing I checked.

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**Author:** ![COROLLAGUY1](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/corollaguy1/32/7575_2.png) [@COROLLAGUY1](https://community.cartalk.com/u/COROLLAGUY1)\
**Post date:** [August 5, 2018, 11:01am UTC](https://community.cartalk.com/t/2008-mazda-mazda3-rattle/122301/4 "2018-08-05T11:01:13Z")

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.After reading a couple of mazda 3 forums, people mentioned the metallic noise was caused by broken coil springs that were shifting.Check it out

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**Author:** ![Yosemite](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/yosemite/32/643_2.png) [@Yosemite](https://community.cartalk.com/u/Yosemite)\
**Post date:** [August 5, 2018, 1:54pm UTC](https://community.cartalk.com/t/2008-mazda-mazda3-rattle/122301/5 "2018-08-05T13:54:25Z")

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I would jack it up, and put jack stands under the car. If no jack stands…I’ve seen people drive over a ditch to give them the room to crawl under.  
Then crawl under and wiggle or shake anything until I found the noise.

Be sure to give the exhaust a real good shake as well. You won’t break anything!!!  
It could also a loose heat shield rattling.  
Heat shields are notorious for rotting through where the screws hold it in place. Many times you can fix this with a large fender washer.

Yosemite

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**Author:** ![David15](https://avatars.discourse-cdn.com/v4/letter/d/dc4da7/32.png) [@David15](https://community.cartalk.com/u/David15)\
**Post date:** [August 5, 2018, 6:00pm UTC](https://community.cartalk.com/t/2008-mazda-mazda3-rattle/122301/6 "2018-08-05T18:00:46Z")

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Thanks Yosemite I’ll give that a try.