Official regional source Toyota Highlander 2023
Regular Fuel Accepted Minimum 91 RON
Recommended 91 RON
Market Global Market
Engine 2.5L hybrid / 3.5L V6
Powertrain Hybrid
Fuel type Gasoline
Ethanol E10
Fuel tank 65 L Source & Verification Toyota Highlander Regional Owner's Manual & Specification
Last verified 2026-10-06 Hybrid trims use petrol, not plug-in charging. Regular unleaded 91 RON or higher accepted.
What happens if I use a lower octane fuel? Do not use a grade below the stated minimum. A higher number is not automatically better unless the manufacturer says so.
Manufacturer verified Toyota Highlander 2023 XU70
Regular Fuel Accepted Minimum 87 AKI
Recommended 87 AKI
Market United States
Engine 2.4L turbocharged I4 (T24A-FTS)
Powertrain Internal combustion
Fuel type Gasoline
Ethanol E15
Fuel tank 68 L Source & Verification 2023 Toyota Highlander Owner's Manual (OM0E055U)
Page Maintenance data; Fuel information
Last verified 2026-10-06 Toyota specifies 87 AKI (91 RON) or higher, a 68 L tank, and gasoline containing no more than 15% ethanol.
What happens if I use a lower octane fuel? Do not use a grade below the stated minimum. A higher number is not automatically better unless the manufacturer says so.