# 2015 Lexus RX 450h really needs premium gas?

**URL:** <https://community.cartalk.com/t/2015-lexus-rx-450h-really-needs-premium-gas/121180>\
**Category:** Maintenance/Repairs\
**Tags:** lexus\
**Created:** [July 17, 2018, 9:50pm UTC](https://community.cartalk.com/t/2015-lexus-rx-450h-really-needs-premium-gas/121180 "2018-07-17T21:50:30Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![DavidLines](https://avatars.discourse-cdn.com/v4/letter/d/439d5e/32.png) [@DavidLines](https://community.cartalk.com/u/DavidLines)\
**Post date:** [July 17, 2018, 9:50pm UTC](https://community.cartalk.com/t/2015-lexus-rx-450h-really-needs-premium-gas/121180/1 "2018-07-17T21:50:30Z")

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Does a Lexus Rx 450h 2015 really need premium gas as recommended by Lexus

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**Author:** ![pyrolord314](https://avatars.discourse-cdn.com/v4/letter/p/6a8cbe/32.png) [@pyrolord314](https://community.cartalk.com/u/pyrolord314)\
**Post date:** [July 17, 2018, 9:57pm UTC](https://community.cartalk.com/t/2015-lexus-rx-450h-really-needs-premium-gas/121180/2 "2018-07-17T21:57:48Z")

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Yes, per your owners manual page 810: “Premium unleaded gasoline with an octane rating of 91 (Research Octane Number 96) or higher **required** for optimum engine performance.” Required _not_ recommended

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**Author:** ![Mustangman](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/mustangman/32/44130_2.png) [@Mustangman](https://community.cartalk.com/u/Mustangman)\
**Post date:** [July 18, 2018, 1:35am UTC](https://community.cartalk.com/t/2015-lexus-rx-450h-really-needs-premium-gas/121180/3 "2018-07-18T01:35:22Z")

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If the manufacturer SAYS it requires premium, than you should. If it says premium is recommended, its your choice. But as @pyrolord314 says, your car requires premium.