# What's that knocking noise?

**URL:** <https://community.cartalk.com/t/whats-that-knocking-noise/35381>\
**Category:** Maintenance/Repairs\
**Tags:** mdx, acura\
**Created:** [August 21, 2009, 6:55pm UTC](https://community.cartalk.com/t/whats-that-knocking-noise/35381 "2009-08-21T18:55:34Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![GREENEBEANE](https://avatars.discourse-cdn.com/v4/letter/g/cc9497/32.png) [@GREENEBEANE](https://community.cartalk.com/u/GREENEBEANE)\
**Post date:** [August 21, 2009, 6:55pm UTC](https://community.cartalk.com/t/whats-that-knocking-noise/35381/1 "2009-08-21T18:55:34Z")

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Two days ago I purchased a used 2006 Acura MDX w/33,000 miles. It drives very smoothly on the highway, but when I’m driving around off the highway, there is a knocking noise at the drivers side. I hear it when I’m stopping at a light, turning onto a new street, or driving in a parking lot. It’s not consistent, and just has a knock every now and again, almost like an inconsistent sound of riding up a roller coaster.