Get BeforeDriving -> 2-4. Fuel and Emission Guide for Toyota Yaris 4 Door Fourth Generation (2021-2026)

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2-4. Fuel and Emission

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.

Octane Rating*¹(Anti-knock index)

2

Fuel

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) could cause the

emission control system to lose effectiveness. It could also cause

engine knocking and serious engine damage.

Gasoline blended with oxygenates such as alcohol or ether com-

pounds 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 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.

NOTICE

●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 contains any methanol.

Stop using gasohol of any kind if your vehicle engine is performing poorly.

●Never add fuel system additives other than a Toyota genuine product, oth-

erwise the emission control system could be damaged. Consult your Toy-

ota dealer for details.

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2-4. Fuel and Emission

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.

●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 abnormal-

ity. The vehicle has a selfchecking device and it operates while the engine is

off.

WARNING

■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.

NOTICE

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 Toyota 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 your vehicle.

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2-4. Fuel and Emission

Engine Exhaust (Carbon monoxide)

WARNING

■Do not drive your vehicle if you smell exhaust gas inside the vehicle

Engine exhaust gas is dangerous. This gas contains 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 all windows fully open and contact your Toyota dealer immedi-

ately.

■Do not run the engine when inside an enclosed area

2

Running the engine inside an enclosed area, such as a garage, is danger-

ous. 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 monox-

ide, it could cause loss of consciousness or even death to occupants in the

cabin.

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2-4. Fuel and Emission

Fuel-Filler Lid and Cap

WARNING

■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 automat-

ically

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.

NOTICE

Always use only a genuine Toyota fuel-filler cap or an approved equivalent,

available at your Toyota dealer. The wrong cap can result in a serious mal-

function of the fuel and emission control systems.

It may also cause the check engine light in the combination meter to illumi-

nate.

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125

2-4. Fuel and Emission

Refueling

Before refueling, close all the doors, windows, and the liftgate/trunk

lid, and switch the ignition OFF.

1

To open the fuel-filler lid, pull

the remote fuel-filler lid release.

2

Remote fuel-filler lid release

2

3

To remove the fuel-filler cap, turn it counterclockwise.

Attach the removed cap to the

inner side of the fuel-filler lid.

4

Insert the refueling nozzle all the way and begin refueling. Pull out

the refueling nozzle after the refueling stops automatically.

5

6

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

To close, press the fuel-filler lid

until it locks securely.

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Fuel-Filler Cap

2-4. Fuel and Emission

1

Open

To remove the fuel-filler cap, turn it

counterclockwise. Attach the

removed cap to the inner side of

the fuel lid.

2

Close

To close the fuel-filler cap, turn it

clockwise until a click is heard.

NOTICE

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.

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BeforeDriving -> 2-4. Fuel and Emission for Your Toyota Yaris 4 Door Fourth Generation (2021-2026)

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