# 1990 Mercedes-Benz SL-Class sporadic downshift

**URL:** <https://community.cartalk.com/t/1990-mercedes-benz-sl-class-sporadic-downshift/133200>\
**Category:** Maintenance/Repairs\
**Tags:** mercedes-benz, sl-class\
**Created:** [January 23, 2019, 10:18pm UTC](https://community.cartalk.com/t/1990-mercedes-benz-sl-class-sporadic-downshift/133200 "2019-01-23T22:18:29Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![Gail27](https://avatars.discourse-cdn.com/v4/letter/g/58956e/32.png) [@Gail27](https://community.cartalk.com/u/Gail27)\
**Post date:** [January 23, 2019, 10:18pm UTC](https://community.cartalk.com/t/1990-mercedes-benz-sl-class-sporadic-downshift/133200/1 "2019-01-23T22:18:29Z")

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sporadically my car will be traveling along at 60 mph and it sounds like it down shifts and will only go 40 mph. Every time I take it to the mechanic it won’t do it. I’ll leave and it will do this down shift thing. I have tried 3 mechanics and no one knows what it is. They have checked the transmission. What do you think?