# 2019 Mercedes-Benz GL-Class - What fuel

**URL:** <https://community.cartalk.com/t/2019-mercedes-benz-gl-class-what-fuel/153390>\
**Category:** Maintenance/Repairs\
**Tags:** mercedes-benz\
**Created:** [November 23, 2019, 3:48pm UTC](https://community.cartalk.com/t/2019-mercedes-benz-gl-class-what-fuel/153390 "2019-11-23T15:48:22Z")\
**Posts on this page:** 2\
**Page:** 1

<div class="post-metadata">

**Author:** ![DennisHutton](https://avatars.discourse-cdn.com/v4/letter/d/ea666f/32.png) [@DennisHutton](https://community.cartalk.com/u/DennisHutton)\
**Post date:** [November 23, 2019, 3:48pm UTC](https://community.cartalk.com/t/2019-mercedes-benz-gl-class-what-fuel/153390/1 "2019-11-23T15:48:23Z")

</div>

we bought a mercedes-2019-the manufacturer recommends that we use 91 octane only. Is this necessary or can we use a lower octane

---

<div class="post-metadata">

**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:** [November 23, 2019, 4:51pm UTC](https://community.cartalk.com/t/2019-mercedes-benz-gl-class-what-fuel/153390/2 "2019-11-23T16:51:21Z")

</div>

Does your manual say recommend or required . If required then that should be all that you use period. If recommended then you can use regular unleaded but why would you cheap out on an expensive vehicle like this ? I say use premium during the warranty period .