Fuel

Use unleaded regular gasoline with an octane rating of at last 87 AKI (Anti-Knock Index) number (Research octane number 91).

caution

Using a fuel other than that specified could adversely affect the emission control system, and may also affect warranty coverage.
Under no circumstances should a leaded gasoline be used, because this will damage the three-way catalyst.
Do not use E-15 or E-85 fuel in the vehicle. The vehicle is not designed to run on E-15 or E-85 fuel. Using E-15 or E-85 fuel in a vehicle not specifically designed for E-15 or E-85 fuel can dversely affect the emission control devices and systems of the vehicle. Damage caused by such fuel is not covered by the Mitsubishi Motors new vehicle limited warranty.
Do not use fuel that contains the octane booster methylcyclopentadienyl manganese tricarbonyl (MMT). Using fuel containing MMT may adversely affect vehicle performance and vehicle emissions. Not all fuel dispensers are labeled to indicate MMT content, so you may have to consult your gasoline retailer for more details. Note that Federal and California laws prohibit the use of MMT in reformulated gasoline.
U.S. government regulations require ethanol dispensing pumps to be identified by a small, square, Orange and black label with the common abbreviation or the appropriate percentage for that region.