2022 Volkswagen Passat Owners Manual - Fuel types and refueling

Fuel types and refueling

 Introduction

The fuel filler flap is located on the right rear side of the vehicle.

Designation of fuels and fuel standards

 Refer to ⇒ andSafety precautions for handling fuel.

Fig. 122 On the inside of the fuel filler flap: fuel label (general example)

Fuel label

The type of fuel to use depends on the vehicle engine. When your vehicle leaves the factory there is a fuel information sticker inside the tank flap with notes about the minimum required fuel type for your vehicle  fig. 122.

The name specifies which fuels are suitable for the vehicle. This is a minimum requirement ⇒ .

Fuel standards

The fuel used must meet one of the following standards. The vehicle must not be refueled with other fuels ⇒ .

If fuel with the specified standards is not available, contact suitably qualified professionals for information about which fuels are suitable for the vehicle. Volkswagen recommends contacting your authorized Volkswagen dealer or authorized Volkswagen Service Facility.

Gasoline

Gasoline and methanol mixture

• AKI 87 or higher

• Maximum 3 % methanol

Gasoline and ethanol mixture

• AKI 87 or higher

• Maximum 15 % ethanol

Gasoline and MTBE mixture

• AKI 87 or higher

• Maximum 15 % MTBE

NOTICE

Refueling with non-standard and non-approved fuels can cause reduced performance and considerable damage to the engine and the fuel system.

• Before refueling, check if the fuel specification at the fuel pump meets the vehicle specifications.

• Only refuel using fuels that conform to the specified standards and name to reduce the risk of damage to the fuel system and engine malfunctions.

Gasoline

 Refer to ⇒ andSafety precautions for handling fuel.

Gasoline types

The gasoline types differ in terms of their AKI (Anti-Knock Index) specification, which is given from the formula (RON+MON)/2, or the Research Octane Number (RON) specification. The vehicle may also be fueled with gasoline that has a higher AKI or RON than what is required by the engine. However, this will not improve fuel consumption or engine power.

The fuel label may include multiple types of gasoline, e.g. AKI 93 min. 91. The highlighted gasoline type, AKI 93 in this example, is the preferred gasoline type for which the vehicle is designed and optimized. The listed alternative gasoline type, AKI 91 in this example, should only be used if the preferred type, AKI 93 in this example, is not available.

If your vehicle has a gasoline engine, fuel it only with gasoline that does not contain any metal (no lead, manganese or iron) ⇒ .

The most frequently purchased gasoline types in the USA and Canada have the following octane values, which are normally listed on the fuel pump:

• Regular (normal gasoline): AKI 87 to 90 or ROZ 91

• Premium (super gasoline): AKI 91 to 93 or ROZ 95

Volkswagen recommends “TOP TIER Detergent Gasoline”, which is available in some regions, for example North America, Central America and South America. For more information regarding “TOP TIER Detergent Gasoline”, visit the official website at http://www.toptiergas.com.

NOTICE

Using gasoline that does not meet the minimum octane number requirements may reduce engine performance, while the use of poor-quality gasoline or gasoline with an AKI of below 87 or a ROZ of under 91 could also result in engine damage.

Refueling

 Refer to ⇒ andSafety precautions for handling fuel.

Fig. 123 Behind the fuel filler flap: fuel tank cap (general example)

Refueling procedure

1. Open the fuel filler flap.

2. Remove the fuel tank cap and insert it into the opening at the fuel filler flap provided for this  fig. 123.

3. Hold the fuel pump nozzle handle down to ensure optimum refueling.

4. The fuel tank is full once the fuel pump nozzle turns off for the first time ⇒ .

5. Screw the fuel tank cap onto the fuel filler neck.

6. Close the fuel filler flap.

WARNING

Fuel may spray out and overflow if the fuel tank is overfilled. This can cause explosions, fires, and serious injuries.

• Do not continue filling after the pump nozzle switches off for the first time.

NOTICE

Every six months, if possible, run the fuel tank empty until the indicator light comes on and refuel it. This is required to maintain the system functions and fuel quality necessary for gasoline-powered engines.

Fuels can contaminate the environment. Collect any leaking operating fluids and dispose of them according to legal regulations.