Get Service and care -> Fuel (fuel tank) Guide for Audi Q5 SUV Third Generation (2024-2026)

Checking and topping up fluids

Petrol grade

Applies to: vehicles with petrol engine

Checking and topping up

fluids

The correct fuel grade for your vehicle is listed in-

side the fuel tank flap.

Fuel

Identification of fuels

The vehicle is equipped with a catalytic converter

and must only be run on unleaded petrol. Petrol

must be sulphur-free and must comply with the

EN 228 fuel quality standard or equivalent. The

petrol grades have different octane (RON) or An-

ti-Knock Index (AKI) ratings.

In countries where sulphur-free fuel is not availa-

ble, you may use low-sulphur fuel instead.

The following headings relate to the sticker on

the inside of your vehicle's tank flap (example):

Fig. 113 Fuel tank flap sticker: Identification of fuels (ex-

amples)

95 RON/ROZ or min. 91 RON/ROZ

The use of premium petrol (95 RON / 91 AKI) is

recommended. If that type of fuel is not availa-

ble, regular petrol (at least 91 RON / 87 AKI) can

be used with a slight loss of power.

The correct fuel grade for your vehicle is listed in-

side the fuel tank flap.

The symbols signify different fuels. Depending on

the fuel, the individual symbols may be found on

the vehicle’s fuel tank flap. In some countries,

you will also find the information on the fuel

pumps. This is intended to help prevent incorrect

fuel from being used. Only fill the tank with the

fuel types shown on the vehicle’s fuel tank flap.

min. 95 RON/ROZ

Premium petrol (at least 95 RON / 91 AKI) must

be used.

If premium petrol is not available, the engine can

be run on regular petrol with 91 RON / 87 AKI as

an emergency measure. In this case only use

moderate engine speeds and a light throttle. Fill

up with premium or Super Plus petrol as soon as

possible.

–

1 Petrol with ethanol: “E” stands for ethanol.

The number refers to the proportion of ethanol

in the petrol. For example, “E5” means that the

fuel contains a maximum of 5% ethanol.

2 Petrol with ethanol: “E” stands for ethanol.

The number refers to the proportion of ethanol

in the petrol. For example, “E10” means that

the fuel contains a maximum of 10% ethanol.

3 Diesel with biodiesel: “B” stands for biodie-

sel. The number refers to the proportion of bio-

diesel in the diesel. For example, “B7” means

that the fuel has a maximum of 7% biodiesel

content.

98 RON/ROZ or min. 95 RON/ROZ

The use of Super Plus petrol (98 RON / 93 AKI) is

recommended. If that type of fuel is not availa-

ble, premium petrol (at least 95 RON / 91 AKI)

can be used with a slight loss of power.

If premium petrol is not available, the engine can

be run on regular petrol with 91 RON / 87 AKI as

an emergency measure. In this case only use

moderate engine speeds and a light throttle. Fill

up with premium or Super Plus petrol as soon as

possible.

–

4 Diesel: “XTL” stands for paraffinic diesel

fuel.



May vary in different countries.

226

Checking and topping up fluids

Information on petrol grade

vehicle reliably. Ask at your filling station wheth-

er the diesel fuel available there is suitable for

the current conditions and for the temperatures

which could potentially occur.

You can use higher octane fuel than your engine

requires.

CAUTION

– Do NOT fuel your vehicle with high-ethanol

fuel blends (e.g. E30 – E100). This will dam-

age the fuel system.

– Never use FAME fuels (biodiesel), petrol,

heating oil, thinners or any other fuels or

additives, as these could cause serious dam-

age to the fuel system and the engine.

– Never start the engine if you fill up with the

wrong type of fuel, as this could damage

the fuel system and the engine. Seek pro-

fessional assistance.

– Do NOT fuel your vehicle with high-metha-

nol fuel blends (e.g. M15 – M100). Damage

will occur to the fuel system and the engine.

– Even one tankful of leaded fuel would per-

manently impair the efficiency of the cata-

lytic converter.

– You should use only petrol additives which

have been approved by Audi. Additives with

so-called octane boosters or antiknock addi-

tives can contain metallic additives that

cause significant damage to the engine and

the catalytic converter. Do not use such ad-

ditives.

Paraffinic diesel fuel

Applies to: vehicles suitable for paraffinic diesel fuel

The correct fuel grade for your vehicle is listed in-

side the fuel tank flap.

You can use sulphur-free paraffinic diesel fuel

that complies with the EN 15940 standard if the

“XTL” symbol is on the sticker inside your vehi-

cle’s tank flap. You must not use this fuel if the

symbol is not on the sticker.

– Metal-based fuels, which can be identified

from the marking on the fuel dispenser,

must not be used. LRP fuel (lead replace-

ment petrol) also contains high concentra-

tions of metallic additive. Risk of engine

damage!

Please also refer to the description of diesel fuel

ðpage 227.

– High engine speed and full throttle can

damage the engine when using petrol with

an octane rating lower than the correct

grade for the engine.

Filling the tank

Driver messages

The following driver messages may appear, de-

pending on the equipment installed in your vehi-

cle:

Diesel fuel

Applies to: vehicles with diesel engine

The correct fuel grade for your vehicle is listed in-

side the fuel tank flap.

Driver messages

If the indicator lamp  lights up and a corre-

sponding message appears, you should add fuel

to the vehicle’s tank.

The use of sulphur-free diesel complying with

the EN 590 standard is recommended.

Diesel can thicken at very low temperatures,

which can result in problems starting the engine

or prevent the engine from running smoothly.

For this reason, filling stations in some countries

offer winter-grade diesel fuel during the cold

months so that you can continue to operate your

 Tank system malfunction! Please contact

workshop

There is a malfunction in the tank system. Drive

to a qualified workshop without delay and have

the fault rectified.



This fuel is available in certain countries only.

227

Checking and topping up fluids

►

Vehicle refuelled. Reset km/miles now?

When the fuel filler pump switches itself off,

wait for 5 seconds before pulling out the filler

nozzle so that any remaining fuel can flow into

the tank opening.

Select Yes if you want to reset the trip recorder

to zero.

The display of this message depends on the

amount of fuel in the tank and the amount of

fuel added.

►

Screw on the tank cap clockwise until it clicks

audibly.

Press the left side of the flap to close it (you

should hear it click into place).

Filling the fuel tank

The correct fuel grade for your vehicle is given on

a sticker on the inside of the tank flap. Further

notes on fuel ðpage 226.

The tank capacity of your vehicle is given in the

Technical data section ðpage 288. The maxi-

mum possible amount of fuel that can be added

depends on the amount remaining in the tank.

To prevent fuel and vapours from escaping, make

sure that the fuel tank is properly sealed; other-

¹⁾

wise the indicator lamp

will light up.

Fig. 114 Vehicle as seen from the rear right: Opening fuel

tank flap

Information on vehicles with diesel engine

– Diesel vehicles are equipped with an incorrect

fuelling protection system . This system en-

sures that the tank can only be fuelled from a

diesel filler nozzle.

– If the filler nozzle is old, damaged or too small,

it may not be able to open the protection mech-

anism on the fuel tank. In this case, try turning

the filler nozzle before inserting it in the fuel

filler neck, use a different filling pump or seek

professional assistance.

Fig. 115 Fuel tank flap with tank cap attached

– The protection mechanism will not open if you

try to add fuel from a spare fuel canister. You

can get round this simply by adding the diesel

fuel slowly.

The fuel tank flap is unlocked/locked automati-

cally by the central locking system. The fuel tank

flap is not locked when you lock the vehicle from

the inside by pressing the central locking switch.

►

WARNING

If necessary, unlock the vehicle.

►

Press the left side of the flap to open it

ðFig. 114.

Unscrew the tank cap anti-clockwise.

Hook the cap onto the open flap ðFig. 115.

Insert the filler nozzle into the fuel filler neck

as far as the stop.

Start refuelling. The filler nozzle cuts out as

Improper refuelling and improper handling of

fuel can cause explosions, fire, serious burns

and other injuries.

►

– Do not smoke. Keep naked flames away

from the vehicle.

►

– The ignition must be switched off when re-

fuelling.

►



soon as the fuel tank is full ð

Depends on engine and country

Depending on country

228

Checking and topping up fluids

– Mobile phones and radio equipment must

always be switched off when refuelling.

Electromagnetic radiation can cause sparks

which could start a fire.

– Keep the filler nozzle inserted as far as

possible into the filler opening while fill-

ing the canister.

– Observe all relevant local regulations on

using, storing and transporting spare fuel

canisters.

– The auxiliary heating* must be switched off

when refuelling.

– Fuel can escape if you do not insert the filler

nozzle all the way into the filler neck. Escap-

ing fuel can ignite and cause a fire.

– Never get into the vehicle while refuelling. If

you do have to get into the vehicle in excep-

tional circumstances, close the door and

touch a metal surface before handling the

filler nozzle again. This will discharge any

static electricity which could generate

sparks. Sparks can start a fire when refuel-

ling.

CAUTION

– If fuel overflows onto the vehicle, remove it

completely straight away to prevent dam-

age to the vehicle.

– Never run the tank completely dry. If there

is an irregular fuel supply, misfiring can oc-

cur. As a result unburnt fuel can enter the

exhaust system and cause damage to the

catalytic converter(s).

– Vehicles with diesel engine: When filling

the fuel tank after having run it completely

dry, the ignition must be switched on for at

least 30 seconds without starting the en-

gine. When you then start the engine it may

take longer than normal (up to one minute)

for the engine to start firing. This is because

air needs to be bled from the fuel system

while starting.

– The filler nozzle cuts out as soon as the fuel

tank is full. Do not try to put in more fuel af-

ter the nozzle cuts out, as this will fill the

expansion chamber in the fuel tank. Do not

try to put in more fuel after the automatic

filler nozzle has switched off; this may cause

the fuel to overflow if it becomes warm, po-

tentially at a later point in time. This can

cause explosion, fire and serious or fatal in-

juries.

For the sake of the environment

– Do not try to put in more fuel after the au-

tomatic filler nozzle has switched off; this

may cause the fuel to overflow if it becomes

warm.

WARNING

Audi recommends you NOT to carry a spare

fuel canister in the vehicle. Fuel could escape

from the canister and catch fire, particularly

in the event of an accident. Fire, explosions

and injuries could result.

– Never pour fuel down drains or into the

ground.

– If, in exceptional circumstances, you have to

carry a spare fuel canister, please observe

the following warnings:

Having the tank flap released manually

►

If you cannot open the tank flap, seek profes-

sional assistance.

– Always place the spare fuel canister on the

ground before filling it. Never fill fuel into

the spare fuel canister with the canister

placed in or on top of the vehicle. Electro-

static electricity can build up while filling

the canister and ignite the fuel vapours.

– When using metal fuel canisters, always

keep the filler nozzle in contact with the

canister to prevent the build-up of static

electricity.

►

Then drive to a qualified workshop and have the

fault rectified.

229

Service and care -> Fuel (fuel tank) for Your Audi Q5 SUV Third Generation (2024-2026)

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