Ford Fusion Quiz
Fuel and Refueling

Fuel Quality

In this manual: Fuel and Refueling
Introduction — 7Environment — 1At a Glance — 1Child Safety — 9Seat Belts — 8Personal Safety System™ — 1Additional Restrictions — 8Keys and Remote Controls — 8MyKey™ — 5Doors & Locks — 10Safety — 3Steering Wheel — 5Wipers and Washers — 4Lighting — 8Automatic High Beam Control — 3Windows and Mirrors — 6Instrument Cluster — 4Information Displays — 5Climate Control — 10Seats — 9Garage Door Opener — 1Auxiliary Power Points — 3Storage Compartments — 1Starting and Stopping the Engine — 4Unique Driving Characteristics (if equipped) — 1Fuel and Refueling — 9Engine Emission Control — 5Infection Transmission — 1All-Wheel Drive — 1Brakes — 4Traction Control — 1Stability Control — 1Park Aid — 13Cruise Control — 10Driver Assistance — 14Loading — 1Tow/Haul — 5Driving Tips — 3Roadside Emergencies — 5Customer Assistance — 6Fuses — 3Maintenance — 16Vehicle Care — 9Wheels and Tires — 13Capacities and Specifications — 11Connected Vehicle — 1Wi-Fi Hotspot — 1Audio System — 7SYNC™ — 7SYNC™ 3 — 16Accessories — 1Ford Protect — 3Scheduled Maintenance — 5Appendices — 4
~1min read

Selecting the Correct Fuel

Ford Fusion. Fuel Quality

Your vehicle is designed to operate on regular unleaded gasoline with a minimum anti-knock index (R+M)/2 of 87.

Some gas stations, especially at high altitude locations, may offer fuel labeled as regular unleaded gasoline with an octane rating lower than 87. Using these fuels may cause engine damage that is not covered by the vehicle warranty.

For best vehicle and engine overall performance, premium fuel with an octane rating of 91 or higher is recommended. The performance gained by using premium fuel is especially noticeable in hot weather and under conditions such as towing a trailer.

Do not worry if the engine occasionally knocks slightly. However, if the engine knocks heavily when using fuel with the recommended octane rating, contact an authorized dealer to prevent any engine damage.

We recommend using Top Tier detergent gasolines where available to help minimize engine deposits and maintain optimal vehicle and engine performance. For more information, see www.toptiergas.com.

Do not use:

  • Diesel fuel.
  • Fuel containing kerosene or paraffin.
  • Fuel containing more than 15% ethanol or E85 fuel.
  • Fuel containing methanol.
  • Fuel containing metallic-based additives, including manganese-based compounds.
  • Fuel containing the octane-boosting additive methylcyclopentadienyl manganese tricarbonyl (MMT).
  • Leaded fuel. The use of leaded fuel is prohibited by law.

Using fuels with metallic compounds such as methylcyclopentadienyl manganese tricarbonyl (commonly known as MMT), which is a manganese-based fuel additive, degrades engine performance and affects the emission control system.

Test yourself

A quick Ford Fusion quiz: every answer comes with an explanation and a link to the manual page.