2020 MAZDA MODEL 3 HATCHBACK Owners Manual (in English)

Opening the trunk lid (4–door)
Using the trunk lid release button
Push the trunk lid release button.

Using the electric trunk lid opener
(With the advanced keyless function)
A trunk lid can also be opened while the
key is being carried.
Press the electric trunk lid opener on the
trunk lid, then raise the trunk lid when the
latch releases.

NOTE
When opening the trunk lid with the
doors locked, it may require a few
seconds for the trunk lid latch to release
after the electric trunk lid opener is
pressed.
The trunk lid can be closed when the
doors are locked with the key left in the
vehicle. However, to prevent locking the
key in the vehicle, the trunk lid can be
opened by pressing the electric trunk lid
opener. If the trunk lid cannot be opened
despite doing this procedure, press the
electric trunk lid opener to fully open
the trunk lid after pushing the trunk lid
completely closed.
If the vehicle battery is dead or there is
a malfunction in the electrical system
and the trunk lid cannot be unlocked,
the trunk lid can be opened by
performing the emergency procedure.
Refer to When Liftgate/Trunk Lid
Cannot be Opened on page 7-46.
Closing the liftgate/trunk lid
Lower the liftgate/tr unk lid slowly using
the liftgate/trunk lid grip recess, then push
the liftgate/trunk lid closed using both
hands.
Do not slam it. Pull up on the liftgate/
trunk lid to make sure it is secure.
(5–door)
Before Driving
Doors and Locks
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(4–door)
NOTE
Confirm that the liftgate/trunk lid is
securely closed.
The liftgate/trunk lid, move it without
pressing the electric liftgate/trunk lid
opener to verify that the liftgate/trunk lid
has not been left ajar.
▼ Luggage Compartment
Luggage compartment cover (5-door)
WA R N I N G
Do not place anything on top of the cover:
Placing luggage or other cargo on top of
the luggage compartment cover is
dangerous. During sudden braking or a
collision, the cargo could become a
projectile that could hit and injure
someone. The vehicle has a light weight
luggage compartment cover to keep the
contents of your luggage area out of sight;
it will not retain heavy objects that are not
tied down in an accident such as a rollover.
Tie down all heavy objects, whether
luggage or cargo,
using the tie down
hooks.
Make sure luggage and cargo are secured
before driving:
Not securing cargo while driving is
dangerous as it could move or be crushed
during sudden braking or a collision and
cause injury.
CAUTION
 Make sure the luggage compartment
cover is
firmly secured. If it is not
firmly
secured, it could unexpectedly disengage
resulting in injury.
The luggage compartment can be accessed
by opening the liftgate when the straps are
attached to the sides of the liftgate.

Before Driving
Doors and Locks
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Removing the luggage compartment
cover
This cover can be removed for more room.
1. Remove the straps from the hooks.
2. Press the luggage compartment coverupward from near the pins and remove
the luggage compartment cover from
the pins.
1. Pin

3. Lift the front end of the luggage compartment cover and remove it.
Inside Trunk Release
Lever (4-door)
*
▼Inside Trunk Release Lever
Your vehicle is equipped with an inside
trunk release lever that provides a means
of escape for children and adults in the
event they become locked inside the trunk.

No matter how careful adults might be
with keys and locking their cars, parents
should be aware that children may be
tempted to play around vehicles and use
the trunk as a hiding place.

Adults are advised to familiarize
themselves with the
operation and location
of the inside trunk release lever so that all
children can be told about it in an
appropriate way, keeping in mind that
most vehicles do not have such levers.
WA R N I N G
Close the trunk lid, be sure the seat backs
are latched and do not allow children to
play inside the vehicle:
Leaving the trunk lid open or leaving
children in the vehicle with the keys is
dangerous. Children could open the trunk
lid and climb inside resulting in possible
injury or death from heat exposure.
Before Driving
Doors and Locks
*Some models.3-23
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Always keep the car from being a tempting
place to play by latching the rear seats,
doors and the trunk, and keeping the keys
where children can not play with them:
Leaving children or animals unattended in
a parked vehicle is dangerous. Babies left
sleeping and children who lock themselves
in cars or trunks can die very quickly from
heat prostration. Do not leave your
children or pets alone in a car at any time.
Do not leave the car, the rear folding seats
or the trunk unlocked.
▼Opening the Trunk Lid from the
Inside
Slide the inside trunk release lever in the
direction of the arrow. The lever is made
of material that will glow for hours in the
darkness of the trunk following a brief
exposure to ambient light.

The inside trunk release lever is located on
the inside of the trunk lid.
Before Driving
Doors and Locks
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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.

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 ab ove)
*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 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 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 us ing 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 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 exhaust
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 could 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
system. 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
operates while the engine is off.
▼ 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
contains carbon mono
xide (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 all windows fully open
and contact an Authorized Mazda Dealer
immediately.
Before Driving
Fuel and Emission
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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.Fuel-Filler Lid and Cap
▼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.
Before Driving
Fuel and Emission
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CAUTION
Always use only a genuine Mazda
fuel-filler cap or an approved equivalent,
available at an Authorized Mazda
Dealer. The wrong cap can result in a
serious malfunction of the fuel and
emission control systems.
(U.S.A. and Canada)
It may also cause the check engine light
in the instrument cluster to illuminate.
 When using an automatic car wash or a
high water pressure car wash, lock the
driver's door. Otherwise, the fuel-filler lid
may open unexpectedly and could be
damaged.
▼ Refueling
Before refueling, close all the doors,
windows, and liftgate/trunk lid, and switch
the ignition OFF.
1. Using the following, unlock the
driver’s door.
Transmitter (page 3-15)
Touch sensor (page 3-13)
Door-lock switch (page 3-15)
Auto lock/unlock function (page
3-17)
NOTE
When unlocking the driver's door,
the fuel lid is also unlocked at the
same time.
When locking the driver's door, the
fuel lid is locked after 90 seconds.
The time until the fuel lid is locked
after locking the driver's door can be
changed.
Refer to the Settings section in the
Mazda Connect Owner's Manual.
However, when the driver's door is
locked using the following functions,
the fuel lid is also locked at the same
time.
Auto lock/unlock function (page
3-17)
Auto re-lock function (page 3-5,
3-13)
2. Press the locat ion shown in the
illustration and open the fuel lid.

3. To remove the fuel-filler cap, turn it counterclockwise.
4. Attach the removed cap to the inner
side of the fu el-filler lid.

4–door
1. Fuel-filler lid
2. Fuel-filler cap

Before Driving
Fuel and Emission
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