Choosing the Right Fuel
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Your vehicle is designed to operate on regular unleaded gasoline with a minimum pump (R+M)/2 octane rating of 87.
Some fuel stations, particularly those in high altitude areas, offer fuels posted as regular unleaded gasoline with an octane rating below 87. We do not recommend these fuels.
For best overall vehicle and engine performance, premium fuel with an octane rating of 91 or higher is recommended. The performance gained by using premium fuel is most noticeable in hot weather.
Do not use any fuel other than those recommended because they could lead to engine damage that will not be covered by the vehicle Warranty.
Note:  Use of any fuel other than those recommended can impair the emission control system and cause a loss of vehicle performance.
Do not use:
  • Diesel fuel.
  • Fuels containing kerosene or paraffin.
  • Fuel containing more than 15% ethanol or E85 fuel.
  • Fuels containing methanol.
  • Fuels containing metallic-based additives, including manganese-based compounds.
  • Fuels containing the octane booster additive, methylcyclopentadienyl manganese tricarbonyl (MMT).
  • Leaded fuel (using leaded fuel is prohibited by law).
The use of fuels with metallic compounds such as methylcyclopentadienyl manganese tricarbonyl (commonly known as MMT), which is a manganese-based fuel additive, will impair engine performance and affect the emission control system.
 Do not be concerned if the engine sometimes knocks lightly. However, if the engine knocks heavily while using fuel with the recommended octane rating, contact an authorized dealer to prevent any engine damage.
Fuel Freshness Mode
This helps keep the fuel system functional and the fuel fresh.
 If you mainly use your vehicle in electric power mode without refueling, the gasoline in the fuel tank may become stale due to aging. Stale gasoline can damage the engine and fuel system.
 Your vehicle automatically switches to fuel freshness mode if you do not refuel your vehicle with fresh fuel within an 18-month period. Fuel freshness mode protects your vehicle from potential engine and fuel system damage caused by using stale fuel.
Note:  If you do not add new fuel during an 18-month period, fuel freshness mode will use fuel until approximately 1.2 gal (4.5 L) of fuel remains in the fuel tank.
During fuel freshness mode:
  • The information display will indicate fuel freshness mode is active.
  • The vehicle will only run in hybrid mode. EV Now mode will not be available.
  • Most of the plug-in power will be stored until fuel freshness mode is completed.
Note:  EV Now mode resumes when less than 1.2 gal (4.5 L) of fuel remains in the fuel tank.
Note:  When the fuel level is less than one-quarter full, refueling your vehicle will end fuel freshness mode.
Note:  We recommend you use a fuel stabilizer if you use less than a full tank of fuel during an 18-month period.