What gas does a Ford 500 take?
The Ford Five Hundred runs on regular unleaded gasoline with an octane rating of 87 or higher.
As Ford’s full-size sedan produced from 2005 to 2007, the Five Hundred was designed around standard gasoline available at most outlets. This article explains the fuel type, octane requirements, and ethanol compatibility to help owners fuel correctly and avoid unnecessary costs.
Fuel type and octane requirements
All Ford Five Hundred engines are designed for regular gasoline. The minimum octane rating supported is typically 87 (AKI); higher-octane fuel is not required for normal operation.
- Fuel type: Regular unleaded gasoline (minimum 87 octane, commonly labeled 87 AKI).
- Premium gasoline: Not required for standard operation; using higher-octane fuel generally provides little, if any, performance gain in this model.
Following the manufacturer’s guidance helps ensure reliable starting, smooth running, and proper fuel-injection performance.
Ethanol content and fuel compatibility
In the United States, Ford Five Hundred models are typically compatible with gasoline containing up to 10% ethanol (E10). Always verify with the owner's manual or the fuel door label for your specific year and engine variant.
- Ethanol blends: Up to E10 is commonly supported; higher ethanol blends (like E15 or E85) are not approved unless specifically stated for your engine.
- Diesel and other fuels: Do not use diesel or other non-gasoline blends in a Ford Five Hundred unless Ford explicitly approves them.
When in doubt, consult the owner’s manual or a Ford dealer to confirm the exact fuel compatibility for your year and engine option.
Practical fueling tips
For everyday driving, fill with regular unleaded gasoline at a grade of 87 octane. This keeps fueling costs reasonable while meeting the engine's requirements. If you notice knocking or reduced performance, consult the manual or a mechanic, but stay with regular gasoline unless a higher-octane recommendation is explicitly given.
Maintenance and safety reminders
Using the recommended fuel helps maintain engine efficiency, emissions controls, and long-term reliability. Always follow the manual for any special notes related to ethanol content, fuel system maintenance, and VIN-specific guidance.
Summary: The Ford Five Hundred takes regular unleaded gasoline, with a minimum octane of 87. It is generally compatible with standard ethanol blends (up to 10% ethanol, E10). Premium fuel is not required, and always verify any model-year exceptions in the owner's manual.
