Hyundai Sonata Hybrid 2025 Fuel Requirements

Fuel requirements may vary by market, engine and model year. Always follow the owner's manual, fuel-door label or manufacturer instructions where available.

Verified engines and markets

Manufacturer verified

Hyundai Sonata Hybrid 2025

DN8

Regular Fuel Accepted

Minimum87 AKI

Recommended87 AKI

Market: United States
Engine: Smartstream G2.0 hybrid I4
Powertrain: Hybrid
Fuel type: Gasoline
Ethanol: E15
Fuel tank: 50 L

Source & Verification

2025 Hyundai Sonata Hybrid Digital Owner's Manual (DN8HEV)

Page: Fuel requirements
Last verified: 2026-10-06

Hyundai specifies 87 AKI (91 RON) or higher, a 50 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.

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