# 2011 Mercedes-Benz CLS-Class - gas smell when topped off

**URL:** <https://community.cartalk.com/t/2011-mercedes-benz-cls-class-gas-smell-when-topped-off/181883>\
**Category:** Maintenance/Repairs\
**Tags:** cls-class, mercedes-benz\
**Created:** [January 14, 2022, 7:59pm UTC](https://community.cartalk.com/t/2011-mercedes-benz-cls-class-gas-smell-when-topped-off/181883 "2022-01-14T19:59:56Z")\
**Posts on this page:** 6\
**Page:** 1

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**Author:** ![frankpietroski](https://avatars.discourse-cdn.com/v4/letter/f/f19dbf/32.png) [@frankpietroski](https://community.cartalk.com/u/frankpietroski)\
**Post date:** [January 14, 2022, 7:59pm UTC](https://community.cartalk.com/t/2011-mercedes-benz-cls-class-gas-smell-when-topped-off/181883/1 "2022-01-14T19:59:57Z")

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i purchase this car about 4 yrs ago when the car is topped off there ia strong scent of gasoline , a local NJ dealer told me ths item has not been taken care of by MB . i am planning on bringing the enclosed article to the local mb and see if they will follow up , or i am planing a smalll claims against mb as well as case for triple damgages as allowed in Mass.

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**Author:** ![VOLVO-V70](https://avatars.discourse-cdn.com/v4/letter/v/8e8cbc/32.png) [@VOLVO-V70](https://community.cartalk.com/u/VOLVO-V70)\
**Post date:** [January 14, 2022, 9:23pm UTC](https://community.cartalk.com/t/2011-mercedes-benz-cls-class-gas-smell-when-topped-off/181883/2 "2022-01-14T21:23:01Z")

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You bought a used vehicle out of warranty and you think you have a Small Claims issue ? Good luck with that . Just have an independent shop solve the problem and be done with it.

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**Author:** ![NYBo](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/nybo/32/17281_2.png) [@NYBo](https://community.cartalk.com/u/NYBo)\
**Post date:** [January 15, 2022, 11:52pm UTC](https://community.cartalk.com/t/2011-mercedes-benz-cls-class-gas-smell-when-topped-off/181883/3 "2022-01-15T23:52:06Z")

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1. We can’t see any article.

2. You will not prevail in court so save your money for a mechanic to fix the problem.

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**Author:** ![weekend-warrior](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/weekend-warrior/32/26122_2.png) [@weekend-warrior](https://community.cartalk.com/u/weekend-warrior)\
**Post date:** [January 15, 2022, 11:59pm UTC](https://community.cartalk.com/t/2011-mercedes-benz-cls-class-gas-smell-when-topped-off/181883/4 "2022-01-15T23:59:06Z")

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you should not be topping off the gas. just stop when it clicks off. that is probably why you are smelling the gas fumes.

[Why you should never 'top off' your gas tank](https://clark.com/cars/why-you-should-never-top-off-your-gas-tank/)

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**Author:** ![texases](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/texases/32/862_2.png) [@texases](https://community.cartalk.com/u/texases)\
**Post date:** [January 16, 2022, 12:23am UTC](https://community.cartalk.com/t/2011-mercedes-benz-cls-class-gas-smell-when-topped-off/181883/5 "2022-01-16T00:23:32Z")

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Don’t top off, and have your car’s evaporative recovery system tested.

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**Author:** ![Tester](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/tester/32/15976_2.png) [@Tester](https://community.cartalk.com/u/Tester)\
**Post date:** [January 16, 2022, 1:00am UTC](https://community.cartalk.com/t/2011-mercedes-benz-cls-class-gas-smell-when-topped-off/181883/6 "2022-01-16T01:00:58Z")

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There’s a problem with the over-fill/roll-over check valve in the Onboard Refueling Vapor Recovery system.

![image](https://global.discourse-cdn.com/cartalk/original/3X/3/4/34e3b2850dd86a7194bc7b2a23b12251ec89638c.png)

Tester