Table of Contents > Fuel and exhaust gas purification > Types of fuel and refueling

VW Passat B8 Owner's Manual ➜ Types of fuel and refueling

In an emergency, request the help of specialized  
Fuel and exhaust gas  
Types of fuel and  
Safety warnings regarding  
the handling of fuel  
Introduction to the topic  
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. 130.  
Note and from page 291.  
· 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.  
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 .  
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, ask a Volks wagen dealer or a  
specialized workshop which of the available fuels  
is suitable for the vehicle.  
Emergency unlocking of the fuel filler flap is  
not possible. in case  
3 G 0 0 1 2 7 6 0 A H  
Safety warnings regarding the handling of fuel  
Note and from page 291.  
Types of gasoline  
The types of gasoline are differentiated by octane  
number (RON/ROZ for its English and German  
acronyms respectively). It is possible to refuel gasoline  
with a higher octane number than what the engine  
needs. However, doing so will not decrease fuel  
consumption or improve engine performance.  
Fig. 203 Gasoline with ethanol.  
Gasoline with Ethanol. The figure indicates the  
maximum percentage of ethanol present in gasoline, p.  
Eg E5 means 5% maximum ethanol ÿ p. 292.  
Various types of gasoline may appear on the fuel sticker,  
e.g. eg, 95/92 / 97/93 RON/ROZ. The types of gasoline  
highlighted in bold, 95/92 in the example, are those that  
should be used preferably for the vehicle. Only if these  
are not available can another type of those indicated be  
When doing so, the type of gasoline with the highest octane  
rating should be refueled, e.g. e.g., 97 instead of 93.  
In vehicles with a gasoline engine, use only unleaded  
gasoline or gasoline containing a maximum of 10%  
ethanol (E10) ÿ .  
fuel standard  
— EN 228  
— ANP Resolution No. 57 (Brazil)  
— Resolution 478/1283 (Argentina)  
— NOM-086 (Mexico)  
Diesel oil  
The quality of the fuel influences the driving  
behaviour, the power and the service life of the  
engine. Refuel with fuel that already contains suitable  
additives ÿ .  
Fig. 204 Diesel with biodiesel.  
Diesel with Biodiesel. The figure indicates the  
maximum percentage of biodiesel present in the  
diesel, e.g. eg B7 means a maximum of 7% biodiesel  
ÿ p. 292.  
Improper refueling and the wrong gasoline additives  
can cause damage to the vehicle.  
· Before refuelling, check whether the standard of  
fuel listed in the fuel pump meets the requirements  
of the vehicle.  
fuel standard  
— EN 590  
—DIN EN 590  
Use only additives approved by Volkswagen and  
in the authorized dose 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 revs and  
subjecting the engine to great efforts. Refuel with  
sufficient octane rating as soon as possible.  
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.  
· Before refueling, check whether the fuel designation  
on the fuel pump meets the requirements of the  
· Refuel only with the mentioned standard and  
designation to avoid damage to the fuel system and  
engine failure.  
Diesel oil  
Note and from page 291.  
In vehicles with a diesel engine, use only diesel or  
diesel with a maximum biodiesel content of 7% ÿ .  
Fuel and exhaust gas purification  
If diesel with a high sulfur content is used, shorter  
tion, use a suitable adapter for the reserve drum. You  
can purchase suitable adapters from Volkswagen  
dealers or specialist workshops.  
service intervals apply. You can find out from  
Volkswagen dealers or specialized workshops which  
countries have a high sulfur content in diesel fuel.  
The quality of the fuel influences the driving  
behaviour, the power and the service life of the  
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.  
· Before refueling, check whether the fuel standard  
on the fuel pump meets the requirements of  
the vehicle.  
Winter diesel and filter preheat function  
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.  
· Only use additives authorized by Volkswagen and  
in the authorized dose in each case.  
When temperatures are wintery, the diesel  
engine can be quite noisy and the  
Exhaust gases may have a bluish cast.  
Depending on the climate and weather, different  
cold resistance classes may be listed in the fuel  
standards of the country in question ÿ p. 291.  
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  
Note and from page 291.  
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.  
Protection against incorrect refueling  
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.  
Fig. 205 Behind the fuel tank flap: tank cap  
(schematic representation).  
If the nozzle cannot be inserted correctly into the  
— Unlock the fuel filler cap with the vehicle key or  
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 specialized  
workshop and request a system check.  
the key located on the driver's door.  
— Open the fuel tank cap.  
— Unscrew the tank cap and fit it into the hole  
provided in the lid.  
— To ensure optimal refueling, hold the nozzle with  
the handle downwards.  
— The fuel tank is full when the fuel nozzle first  
When in an emergency the vehicle has to be refueled  
with a reserve canister, the protection will not open.  
shuts off the fuel supply ÿ .  
— Screw the tank cap into the filler neck.  
I swim.  
3 G 0 0 1 2 7 6 0 A H  
In this case, pour the diesel in very small amounts  
and very slowly. To facilitate the operation  
Types of fuel and refueling  
— Close the fuel tank flap.  
Note and , at the beginninognopfatgheis2c9h1a,patnedr,,on  
page 294.  
If the fuel tank is overfilled, the fuel could splash and  
overflow. This could cause explosions, fire and  
serious injury.  
you see.  
Using the urea solution AdBlue® zador the catali  
SCR transforms nitrogen oxides into nitrogen  
and water. AdBlue® is a registered trademark  
and is also known as AUS32 or DEF (Diesel  
Exhaust Fluid).  
Do not continue refueling when the fuel dispenser  
gun shuts off the supply for the first time.  
mere time.  
Legal warnings It is  
exhaust gas purification  
not allowed to make technical modifications to the  
exhaust gas purification system that influence the  
purification of exhaust gases carried out by AdBlue® .  
Introduction to the topic  
The relevant components for exhaust gases reduce  
polluting emissions:  
If the AdBlue® expressly authorized by Volkswagen  
according to ISO-22241-1 is not used or refilled, the  
vehicle will not conform to the certificate of conformity  
issued for this type of vehicle.  
— AdBlue® ÿ p. 294 —  
Catalyst ÿ p. 297 —  
Particle filter (depending on equipment) ÿ p. 297  
Using the vehicle without the AdBlue® prescribed  
by Volkswagen may be punishable.  
If the exhaust gas cleaning system is not used as  
intended, exhaust gas emissions may worsen.  
Exhaust gases contain carbon monoxide, which  
can cause unconsciousness and death.  
Information regarding AdBlue®  
· Do not leave the engine running in closed spaces  
The AdBlue® consumption depends on the driving  
style, the operating temperature and the ambient  
temperature. On the instrument panel screen you  
can check the remaining range and the amount to be  
· Never start the engine in closed spaces.  
charged ÿ p. 26.  
· Do not leave the vehicle with the engine running  
Since AdBlue® freezes from -11 °C (+13 °F), if  
the temperature is very low, there may be limitations  
when refueling. The system is heated while driving  
to ensure exhaust gas purification even at very low  
The exhaust system components become extremely  
hot and this can cause a fire.  
AdBlue® must be charged regardless of whether the  
services are performed, as it may be required more  
frequently or between service intervals.  
· 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.  
Never allow the AdBlue® tank to empty completely ÿ  
p. 298.  
· Never use additional protection for the underbody  
of the vehicle or anti-corrosion products for the  
exhaust pipes, catalytic converters, particulate  
filters or thermal insulators.  
Low charge level warning and indication system  
Add AdBlue® whenever an indication to do so  
appears on the instrument panel displayÿ p. 297  
Fuel and exhaust gas purification  

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