2018 MAZDA MODEL 3 HATCHBACK Owners Manual (in English)

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 perform best w ith fuel listed in the table.
Fuel
Octane Rating* (Anti-knock index)
Regular unleaded fuel 87 [(R
M)/2 method] or above (91 RON or above)
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 negativel y 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 th e 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 wh en 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 th e 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 problems resulting from the use of the following may not be
covered by the warranty.
Gasohol containing mo re than 10 % ethanol.
Gasoline or gasohol containing methanol.
Leaded fuel or leaded gasohol.
Before Driving
Fuel and Emission
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▼Emission Control System
This vehicle is equipped with an
emission control system (the catalytic converter is part of
this system) that enables the vehicle to comply with existing e xhaust emissions
requirements.
WA R N I N G
Never park over or near anything flammable:
Parking over or near anything flammable, such as dry grass, is dangerous. Even with the
engine turned off, the exhaust system remains very hot after normal use and could ignite
anything flammable. A resulting fire co uld cause serious injury or death.
CAUTION
Ignoring the following precautions could cause lead to accumulate on the catalyst inside the
converter or cause the converter to get very hot. Either condition will damage the converter
and cause poor performance.
USE ONLY UNLEADED FUEL.
 Do not drive your Mazda with any sign of engine malfunction.
 Do not coast with the ignition switched off.
 Do not descend steep grades in gear with the ignition switched off.
 Do not operate the engine at high idle for more than 2 minutes.
 Do not tamper with the emission control sy stem. All inspections and adjustments must be
made by a qualified technician.
 Do not push-start or pull-start this vehicle.
NOTE
Under U.S. federal law, any modification to the original-equipment emission control
system before the first sale and registration of a vehicle is subject to penalties. In some
states, such modification made on a used vehicle is also subject to penalties.
While the engine is off, the sound of a valve opening and closing can be heard at the rear
of the vehicle, however this does not indicate an abnormality. The vehicle has a
self-checking device and it oper ates while the engine is off.
Before Driving
Fuel and Emission
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▼Engine Exhaust (Carbon monoxide)
WA R N I N G
Do not drive your vehicle if you smell exhaust gas inside the vehicle:
Engine exhaust gas is dangerous. This gas cont
ains carbon monoxide (CO), which is colorless,
odorless, and poisonous. When inhaled, it can cause loss of consciousness and death. If you
smell exhaust gas inside the vehicle, keep a ll windows fully open and contact an Authorized
Mazda Dealer immediately.
Do not run the engine when inside an enclosed area:
Running the engine inside an enclosed area, such as a garage, is dangerous. Exhaust gas,
which contains poisonous carbon monoxide, could easily enter the cabin. Loss of
consciousness or even death could occur.
Open the windows or adjust the heating or cooling system to draw fresh air when idling the
engine:
Exhaust gas is dangerous. When the vehicle is stopped with the windows closed and the
engine running for a long time even in an open area, exhaust gas, which contains poisonous
carbon monoxide, could enter the cabin. Loss of consciousness or even death could occur.
Clear snow from underneath and around your vehicle, particularly the tail pipe, before
starting the engine:
Running the engine when a vehicle is stopped in deep snow is dangerous. The exhaust pipe
could be blocked by the snow, allowing exhaust gas to enter the cabin. Because exhaust gas
contains poisonous carbon monoxide, it could cause loss of consciousness or even death to
occupants in the cabin.
Before Driving
Fuel and Emission
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Fuel-Filler Lid and Cap
WA R N I N G
When removing the fuel-filler cap, loosen
the cap slightly and wait for any hissing to
stop, then remove it:
Fuel spray is dangerous. Fuel can burn skin
and eyes and cause illness if ingested. Fuel
spray is released when there is pressure in
the fuel tank and the fuel-filler cap is
removed too quickly.
Before refueling, stop the engine, and
always keep sparks and flames away from
the filler neck:
Fuel vapor is dangerous. It could be ignited
by sparks or flames causing serious burns
and injuries.
Additionally, use of the incorrect fuel-filler
cap or not using a fuel-filler cap may result
in a fuel leak, which could result in serious
burns or death in an accident.
Do not continue refueling after the fuel
pump nozzle shuts off automatically:
Continuing to add fuel after the fuel pump
nozzle has shut off automatically is
dangerous because overfilling the fuel tank
may cause fuel overflow or leakage. Fuel
overflow and leakage could damage the
vehicle and if the fuel ignites it could cause
a fire and explosion resulting in serious
injury or death.
CAUTION
(U.S.A. and Canada)
Always use only a genuine Mazda fuel-filler
cap or an approved eq uivalent, available at
an Authorized Mazda Dealer. The wrong
cap can result in a serious malfunction of
the fuel and emission control systems. It
may also cause the check engine light in
the instrument cluster to illuminate.
▼ Fuel-Filler Lid
To open, pull the re
mote fuel-filler lid
release.
To close, press the fuel-filler lid until it
locks securely.
Remote fuel-filler
lid release
Before Driving
Fuel and Emission
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▼Fuel-Filler Cap
To remove the fuel-filler cap, turn it
counterclockwise.
Attach the removed cap to the inner side
of the fuel lid.

To close the fuel-filler cap, turn it
clockwise until a click is heard.

Open
Close
CAUTION
(U.S.A. and Canada)
If the check fuel cap warning light
illuminates, the fuel-filler cap may not be
properly installed. If the warning light
illuminates, park your vehicle safely off the
right-of-way, remove the fuel-filler cap and
reinstall it correctly. After the cap has been
correctly installed, the fuel cap warning
light may continue to illuminate until a
number of driving cycles have been
completed. A drive cycle consists of starting
the engine (after four or more hours with
the engine off) and driving the vehicle on
city and highway roads.
Continuing to drive with the check fuel cap
warning light illuminated could cause the
check engine light to illuminate as well.
Before Driving
Fuel and Emission
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Steering Wheel
WA R N I N G
Never adjust the steering wheel while the
vehic le is moving:
Adjusting the steering wheel while the
vehicle is moving is dangerous. Moving it
can very easily cause the driver to abruptly
turn to the left or right. This can lead to loss
of control or an accident.
▼Steering Wheel Adjustment
To change the angle or length of the
steering wheel:
1. Stop the vehicle, and then pull down
the lock release lever under the
steering column.

Lock release lever
2. Tilt the steering wheel and/or adjustthe steering column length to the
desired positions, then push the lever
up to lock the column.
3. Attempt to push the steering wheel up and down to make sure it's locked
before driving.
▼Heated Steering Wheel*
The grips on the left and right of the
steering wheel can be warmed up.
Heating areaHeated steering
wheel switch
The ignition must be switched ON.

Press the switch to turn on the heated
steering wheel. The heated steering wheel
operates for about 30 minutes and then
turns off automatically.
The indicator light illuminates when the
heater is operating.

To turn off the heated steering wheel
before the 30 minutes has elapsed, press
the switch again.
CAUTION
The following types of persons should be
careful not to touch the steering wheel.
Otherwise, it could cause a
low-temperature burn.

Infants, small children, elderly people,
and physically challenged people
 People with delicate skin
 People who are excessively fatigued
 People who are intoxicated
Before Driving
Steering Wheel
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People who have taken sleep-inducing
medicine such as sleeping pills or cold
medicine
Before Driving
Steering Wheel
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Mirrors
Before driving, adjust the inside and
outside mirrors.
▼Outside Mirrors
WA R N I N G
Be sure to look over your shoulder before
changing lanes:
Changing lanes without taking into
account the actual distance of the vehicle
in the convex mirror is dangerous. You
could have a serious accident. What you
see in the convex mirror is closer than it
appears.
Mirror type
Flat type (driver's side)
Flat surface mirror.
Convex type (front passenger side)
The mirror has single curvature on its
surface.
Power mirror adjustment
The ignition must be switched to ACC or
ON position.

To adjust:
1. Rotate the mirror switch to the left
or
right
to choose the left or right side
mirror.
2. Press the mirro r switch in the
appropriate direction.
Center position
Mirror switch
After adjusting the mirror, lock the control
by rotating the switch in the center
position.
Folding mirror
WA R N I N G
Always return the outside mirrors to the
driving position before you start driving:
Driving with the outside mirrors folded in is
dangerous. Your rear view will be restricted,
and you could have an accident.
Manually fold the outside mirror rearward
until it is flush with the vehicle.
Before Driving
Mirrors
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