octane MAZDA MODEL 3 SEDAN 2019 Owners Manual

Fuel and Engine Exhaust Precautions
▼Fuel Requirements
Vehicles with catalytic converters or oxygen sensors must use O
NLY UNLEADED FUEL,
which will reduce exhaust emissions and keep spark plug fouling to a minimum.

This vehicle will per form best with fuel listed in the table.
Fuel
Octane Rating* (Anti-knock index)
Regular unleaded fuel 87 [(R+M)/2 method] or above (91 RON or ab ove)
U.S. federal law requires that
octane ratings be posted on gaso line station pumps.
Fuel with a rating lower than 87 octane (91 RON) will negatively affect the emission control
system performance and could also cause engine knocking and ser ious engine damage.
CAUTION
USE ONLY UNLEADED FUEL.
Leaded fuel is harmful to the catalytic co nverter and oxygen sensors and will lead to
deterioration of the emission control system and or failures.
 This vehicle can only use oxygenated fuels containing no more than 10 % ethanol by
volume. Damage to the vehicle may occur when ethanol exceeds this recommendation, or
if the gasoline contains any methanol. Stop using gasohol of any kind if your vehicle engine
is performing poorly.
 Never add fuel system additives, otherwise the emission control system could be damaged.
Consult an Authorized Mazda Dealer for details.
Gasoline blended with oxygenates such as alcohol or ether compo unds are generally
referred to as oxygenated fuels. The common gasoline blend that can be used with your
vehicle is ethanol blended at no more than 10 %. Gasoline conta ining alcohol, such as
ethanol or methanol, may be marketed under the name "Gasohol".

Vehicle damage and drivability pr oblems resulting from the use of the following may not be
covered by the warranty.
Gasohol containing more than 10 % ethanol.
Gasoline or gasohol containing methanol.
Leaded fuel or leaded gasohol.
Before Driving
Fuel and Emission
3-24
Mazda3_8HE9-EA-18K_Edition3 2018-11-21 14:31:58

You may have the following problems if
you do take your vehicle outside of the
United States/Canada:
Recommended fuel may be unavailable.
Any kind of leaded fuel or low-octane
fuel will affect vehicle performance and
damage the emission controls and
engine.
Proper repair facilities, tools, testing
equipment, and replacement parts may
not be available.
Please refer to your Manufacturer's
Warranty Booklet for more information.
Registering Your Vehicle
in A Foreign Country
(Except United States and Canada)
▼Registering Your Vehicle in A
Foreign Country
Registering your vehicle in a foreign
country may be problematic depending on
whether it meets the specific emission and
safety standards of
the country in which
the vehicle will be driven. Consequently,
your vehicle may require modifications at
personal expense in order to meet the
regulations.
In addition, you should be aware of the
following issues:
Satisfactory vehicle servicing may be
difficult or impossible in another country.

The fuel specified for your vehicle may be
unavailable.

Parts, servicing techniques, and tools
necessary to mainta in and repair your
vehicle may be unavailable.

There might not be an Authorized Mazda
Dealer in the country you plan to take your
vehicle.

The Mazda warranty is valid only in
certain countries.
Customer Information and Reporting Safety Defects
Wa r r a n ty
8-16
Mazda3_8HE9-EA-18K_Edition3 2018-11-21 14:31:58