In an emergency, request the help of specialized
personnel.
Fuel and exhaust gas
purification
Types of fuel and refueling
Safety warnings regarding
the handling of fuel
Introduction to the topic
WARNING
The fuel tank flap is located on the right side of the
vehicle, in the rear area.
Improper handling of fuel can cause explosions,
fire, severe burns, and other injuries.
· Before refuelling, turn off the engine, ignition
and mobile phone as well as other radio
communication devices.
Identification and standards of
fuels
· Before refuelling, switch off the heating in
dependent ÿ p. 139.
Note and from page 303.
· To avoid electrostatic discharges, do not climb
into the vehicle during refueling.
· Make sure that the fuel tank cap is closed
properly and that no fuel is leaking.
Observe the safety instructions
current regulations and local regulations
regarding the handling of fuels.
WARNING
If it is refueled in the wrong way, it can start a fire
and cause serious injury and damage to the vehicle.
Fig. 202 On the inside of the fuel tank flap: fuel sticker
(schematic illustration).
· Refuel only fuels that have been au
twisted for the vehicle.
fuel sticker
· Do not refuel metal fuels and only use additives
authorized by Volkswagen in the authorized
dose in each case.
The type of fuel that must be refueled depends on
the motorization of the vehicle. The type of fuel
used by the vehicle is indicated on the factory fuel
label on the fuel filler flap ÿ fig. 202.
· If fuel spills, wipe it off immediately from all parts
of the vehicle.
The designation and frame indicate which fuel is
appropriate for the vehicle. These are the minimum
requirements that the fuel must meet. It is not
allowed to refuel any other fuel ÿ .
ATTENTION
The fuel it contains can be released from a
reserve drum. This can cause a fire and injury.
· Do not carry reserve drums in the vehicle.
fuel standards
The fuel to be refueled has to meet one of the
following standards. It is not allowed to refuel any
other fuel ÿ .
Fuel can pollute the environment. If any
operating fluid leaks, collect it and dispose
of it properly.
If fuel of the mentioned standards is not
available, consult a qualified specialist workshop
which of the fuels is available.
Emergency unlocking of the fuel filler flap is
not possible. in case
5 N M 0 1 2 7 6 0 A J
303
Safety warnings regarding the handling of fuel
Ethanol
bles is appropriate for the vehicle. Volkswagen recommends a
Volkswagen dealer for this.
Gasoline
Fig. 206 Ethanol.
fuel standard
— DIN 51625
Fig. 203 Gasoline with ethanol.
—EN 15293
Gasoline with Ethanol. The figure indicates the maximum
percentage of ethanol present in gasoline. E5, for example,
means a maximum of 5% ethanol.
WARNING
Refueling with fuel that does not comply with the applicable
standard or is authorized may reduce engine power and cause
considerable damage to the engine and the fuel system.
fuel standard
— EN 228
—DIN EN 228
— ANP Resolution No. 40 (Brazil)
— Resolution 576/2019 (Argentina)
— NOM-016-CRE-2016 (Mexico)
· Before refueling, check whether the fuel designation on the fuel
pump meets the requirements of the vehicle.
Diesel oil
· Refuel only with the mentioned standard and designation to
avoid damage to the fuel system and engine failure.
Gasoline
Fig. 204 Diesel with biodiesel.
Note and from page 303.
Diesel with Biodiesel. The figure indicates the maximum
percentage of biodiesel present in diesel. B7, for example,
means a maximum of 7% biodiesel.
Types of gasoline
The types of gasoline are differentiated by octane number
(RON/ROZ for its English and German acronyms respectively).
You can also refuel gasoline with a higher octane rating than
what the engine needs. However, doing so will not decrease fuel
consumption or improve engine performance.
fuel standard
— EN 590
—DIN EN 590
Various types of gasoline may appear on the fuel sticker, e.g. eg,
RON/ROZ 95 min. 91. The octane rating that appears highlighted,
in the example RON/ROZ 95, is the type of gasoline that must be
used preferably, since the vehicle has been designed and
optimized for it. Only if the preferred type of gasoline is not
available, you can refuel with the other type of gasoline indicated
as an alternative, in the example RON/ROZ 91.
Fig. 205 Synthetic diesel
synthetic diesel
fuel standard
— EN 15940
For gasoline-powered vehicles, use only gasoline that contains
no metals (no lead, manganese, or iron) and no more than
10% ethanol (E10) ÿ .
— DIN EN 15940
The quality of the fuel influences the driving behaviour, the
power and the service life of the engine.
304
Fuel and exhaust gas purification
tor. Refuel with fuel that already contains suitable
additives ÿ .
Depending on the climate and weather, different
cold resistance classes may be listed in the fuel
standards of the country in question ÿ p. 303.
Volkswagen recommends “TOP TIER Detergent
Gaso line”, which is offered in some regions, such as
North, Central and South America. More information
about “TOP TIER Detergent Gasoli ne” can be found
on the Internet at the official website http://
Vehicles with a diesel engine are equipped with a
filter preheat function. This function guarantees the
fluidity of the diesel at low temperatures while driving.
Service stations in the country concerned have
information on the properties of diesel at low
temperatures.
WARNING
If wrongly refueled and wrong fuel additives are used,
the vehicle may be damaged.
In order to be able to start the engine even at
low outside temperatures, Volkswagen recommends
leaving the vehicle parked in a place protected from
the weather, e.g. For example, in a garage.
· Before refuelling, check whether the standard of
fuel listed in the fuel pump meets the requirements
of the vehicle.
Protection against incorrect refueling
· If necessary, use only additives approved by
The filler neck of the fuel tank of vehicles with a
diesel engine may have a protection against incorrect
refueling that only allows it to be refueled with diesel
fuel nozzles.
Volkswagen and in the dose authorized in each
case.
· Refuel only gasoline with the octane number
(RON/ROZ) indicated or higher. If in an emergency
you have to refuel with gasoline with too low an
octane number, drive only at an intermediate speed
and do not overtax the engine. Avoid high speeds
and subjecting the engine to great efforts. Refuel
as soon as possible with fuel with a sufficient octane
number.
If the nozzle cannot be inserted correctly into the
tank filler neck, first check whether you are using the
nozzle from a diesel fuel nozzle. Once you've made
sure you're using the correct gun, rotate the gun from
side to side using a little pressure. In this way the
protection can be opened and it is possible to refuel.
If the protection still does not open, go to a duly
qualified specialized workshop and request a service
of the system. Volkswagen recommends a Volkswagen
dealer.
Diesel oil
Note and from page 303.
When in an emergency the vehicle has to be refueled
with a reserve canister, the protection will not open.
In vehicles with a diesel engine, use only diesel or
diesel with a maximum biodiesel content of 7% ÿ .
In this case, pour the diesel in very small amounts
and very slowly. To facilitate the operation, use an
appropriate adapter for the reserve drum. Appropriate
adapters can be purchased from suitably qualified
specialist workshops.
If diesel with a high sulfur content is used, shorter
service intervals apply. You can find out about the
countries in which diesel fuel has a high sulfur content
at a suitably qualified specialist workshop. Volkswagen
recommends a Volkswagen dealer.
Volkswagen recommends a Volkswagen dealer.
The quality of the fuel influences the driving
behaviour, the power and the service life of the
WARNING
engine. Refuel with fuel that already contains suitable
additives ÿ .
If it is refueled in the wrong way, it can start a fire
and cause serious injury and damage to the vehicle.
Winter diesel and filter preheat function
· Before refueling, check whether the fuel
standard on the fuel pump meets the
requirements of the vehicle.
During the cold season of the year, a diesel with
improved fluidity for low temperatures (winter diesel)
should be used. By refueling with winter diesel,
malfunctions can be avoided. Winter diesel is offered
at service stations during the cold season of the year.
· Do not refuel solely with biodiesel or use gasoline,
fuel oil or other unsuitable fuels.
5 N M 0 1 2 7 6 0 A J
305
Types of fuel and refueling
· Only use additives authorized by Volkswagen and
in the authorized dose in each case.
cause explosions, fire and serious injury
you see.
Do not continue refueling when the fuel dispenser
gun shuts off the supply for the first time.
When temperatures are wintery, the diesel
engine can be quite noisy and the
Exhaust gases may have a bluish cast.
mere time.
WARNING
As far as possible, once every 6 months, do not
refuel until the control lamp indicating that refueling
is required comes on and refill the fuel tank. This is
necessary to ensure the operation of the system and
the quality of the fuel necessary for circulation on
gasoline.
refuel
Note and from page 303.
Fuel can pollute the environment. If any
operating fluid leaks, collect it and dispose
of it properly.
exhaust gas purification
Introduction to the topic
Fig. 207 Behind the fuel tank flap: tank cap
(schematic representation).
The relevant components for exhaust gases reduce
polluting emissions:
Refueling
— AdBlue® ÿ p. 307
1. Unlock the fuel filler cap with the vehicle key or
the key on the driver's door.
willing
— Catalyst ÿ p. 310 —
Particle filter (depending on equipment) ÿ p. 310
2. Open the fuel tank cap.
3. Unscrew the tank cap and fit it into the hole
provided in the lid ÿ fig. 207.
WARNING
Exhaust gases contain carbon monoxide, which
can cause unconsciousness and death.
4. To ensure optimal refueling, hold the nozzle in
the dispenser with the handle down.
5. The fuel tank is full when the fuel nozzle first
shuts off ÿ .
· Do not leave the engine running in closed spaces
two.
· Never start the engine in closed spaces.
6. Screw the tank cap into the filler neck.
· Do not leave the vehicle with the engine running
unattended.
7. Close the lid of the tank.
Notes on ethanol
WARNING
After refueling with a mixture of E85 and gasoline,
drive for at least 5 minutes so that the engine
management is optimally prepared for the current
mixture. During this time, oscillations in the engine
idle speed may occur. For this reason, during this
journey, avoid driving at high speed, high engine
speeds and full throttle.
The exhaust system components become
extremely hot and this can cause a fire.
· Park the vehicle so that no exhaust system
component comes into contact with easily
flammable materials that may be found under the
vehicle, such as dry grass.
WARNING
If the fuel tank is overfilled, the fuel could splash
and overflow. This could
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Fuel and exhaust gas purification
2024 VW Tiguan Owner's Manual
