Staff Answer
Aug 31, 2026 - 04:19 PM
All non-Type R trims of the 2022 Honda Civic are engineered to run on standard unleaded gasoline.
| Spec / Feature | 2.0L 4-Cylinder (LX, Sport) | 1.5L Turbocharged (EX, EX-L, Touring) |
| Fuel Tank Capacity | 12.4 US Gallons (47 Liters) | 12.4 US Gallons (47 Liters) |
| Recommended Octane | 87 Octane Regular Unleaded | 87 Octane Regular Unleaded (Premium 91+ Optional) |
| Ethanol Compatibility | Up to E10 (10% Ethanol Max) | Up to E10 (10% Ethanol Max) |
| Banned Fuel Types | E85, E15, Flex-Fuel, Methanol | E85, E15, Flex-Fuel, Methanol |
Key Refueling Guidelines:
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Octane Requirements: Honda recommends 87 Octane (Pump Octane Number [R+M]/2) or higher. Using premium 91+ octane in turbocharged models may slightly improve throttle response in hot climates but is not required to maintain your warranty.
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TOP TIER™ Gasoline: Use detergent gasoline meeting TOP TIER standards to prevent carbon buildup on direct-injection intake valves and fuel injectors.
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Avoid Overfilling: Stop refueling after the pump nozzle automatically shuts off. Top-off clicks can force liquid gas into the EVAP charcoal canister, causing system saturation.
Check fuel economy ratings and engine specs in our https://www.autouserguide.com/honda/c....
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