[himanshu7988]

Hi Experts,

• any advice on what type of gas to put in my Mazda CX-30 Premium Trim (87,91,93)
• don’t want to unnecessarily waste money by putting Premium gas (if it makes no difference in the long run)
• also amongst the gas companies, any recommendations which one are the better one’s (I see the regular gas in some pumps say contains 10% ethanol, while others don’t say this)
• Options available near our home: Costco, Sunoco, gulf, bp, shell, speedway

 

[conwelpic]

what does it tell you in your owners manual?

 

[himanshu7988]

Couldn’t find any mention of which type of gas to use, hence thought of asking the experts here

 

[carbonized]

Mazda lists Regular Unleaded on their website for all CX-30 trims.
So you should be good with Regular 87 octane (US).

2020 Mazda CX-30 - Specs & Features | Mazda USA

 

[conwelpic]

Couldn’t find any mention of which type of gas to use, hence thought of asking the experts here

don't have a copy of the US owners manual but have the Canadian one so I presume it should be very similar, and found this on page 3-28 under "Fuel and Emission" (looked up "Fuel" in the index)

 

[thebluepotato]

87 regular unless you are in a really hot environment where engine detonation is prone to happen, then higher grade.

 

[himanshu7988]

Thank you!

 

[SDH]

I'm not a fan of just meeting the bare minimum engine requirements, so I opted for SHELL 89/Silver grade octane in my Corolla SE TNG 2.0L direct+port injection engine for the 2.5 years that I owned/drove it. Never had any issues with that out here in the scorching/dry southern Arizona climate, so will likely try the same approach with my CX-30 CE Skyactiv 2.5L non-turbo GDI engine. Plus, I only drive 3000-3500 miles per year these days, so the cost increase is pretty miniscule going from 87 to 89 grade. I also plan to keep this vehicle for a pretty long time (6+ years) if it proves reliable & free of major problems.

 

[CG1]

Fuel grade does make a difference in horsepower and torque, but only on the turbo I believe.