octane MAZDA MODEL 3 HATCHBACK 2021 Owners Manual

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

To achieve maximum engine performance, use the
specified fuel.
Fuel
Octane Rating*1 (Anti-knock index)
Regular unleaded fuel 87 [(R+M)/2 method] or above (91 RON or above)
*1 U.S. federal law requires that octane ratings be posted on gas station pumps.
Fuel with a rating lower than 87 octane (91 RON) will negatively a ffect the emission
control system performance and could al so cause engine knocking and serious
engine damage.
CAUTION
 USE ONLY UNLEADED FUEL.
Leaded fuel is harmful to the catalytic converter 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 cont ains any methanol. Stop using gasohol of
any kind if your vehicle engine is performing poorly.
 Never add fuel system additives other than a Mazda genuine product, otherwise
the emission control system could be damaged. Consult an Authorized Mazda
Dealer for details.
Gasoline blended with oxygenates such as alcohol or ether compounds are generally
referred to as oxygenated fuels. The comm on gasoline blend that can be used with
your vehicle is ethanol blended at no more than 10 %. Gasoline containing alcohol,
such as ethanol or methanol, may be marketed under the name "Gasohol".

Vehicle damage and drivability problems 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
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NOTE
The above is applicable for a
permanent import/export situation
and not related to travelers on
vacation.
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
speci
fic emission and sa fety 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
di fficult or impossible in another
country.

The fuel speci fied for your vehicle may
be unavailable.

Parts, servicing techniques, and tools
necessary to maintain 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
Warranty
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