I Have a 2016 Toyota Highlander and My Gas Mileage is Terrible, I Use 89 or 91 Octane, But I Don’t Need Anyone Telling Me What Grade of Gas To Use

Improving Gas Mileage for 2016 Toyota Highlander

A Toyota Highlander owner is seeking advice to boost their vehicle's mileage, currently getting 25 MPG with 91 octane gas.

"My gas mileage is terrible, but I'm not changing my gasoline octane opinion."

Malachi, a 2016 Toyota Highlander XLE V6 FWD owner, shares his concerns on the Toyota Highlander Owners Club Facebook page, stating he needs to refuel every 2 days.

The owner is looking for solutions to improve fuel mileage without changing their gas octane preference.

Author's summary: Improve your Toyota Highlander's gas mileage with these tips.

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Torque News Torque News — 2025-10-15