Audi A4 2012 to 2022 Checking and Filling
Checking and Filling
Fuel
Types of Gasoline
The correct gasoline grade is stated on the inside of the fuel filler door. The vehicle is equipped with a catalytic converter and must only be driven with unleaded gasoline.
Audi recommends using TOP TIER Detergent Gasoline. For more info, visit www.toptiergas.com.
Gasoline grades are differentiated by octane ratings ((R+M)/2 = AKI, or RON). Examples from fuel filler door:
- Regular: UNLEADED FUEL ONLY, MIN. (R+M)/2 87, MIN. RON 91. Use regular gasoline if premium is not available. Slight reduction in engine power.
- Premium: UNLEADED FUEL ONLY, MIN. (R+M)/2 91 / SUPER MIN. RON 95. Recommended for rated horsepower and torque.
- Premium Plus: UNLEADED FUEL ONLY, MIN. (R+M)/2 93 / SUPER PLUS MIN. RON 98. If unavailable, use premium 91 AKI / 95 RON. Slight reduction in engine power.
Note
- Filling tank even once with leaded fuel or metallic additives permanently damages the catalytic converter.
- Using gasoline with too low octane at high speeds or heavy load can damage engine.
Tips
- Vehicle may be filled with fuel of higher octane than required.
Gasoline Mixture
Gasoline with Alcohol (Ethanol)
Unleaded gasoline with up to 15% ethanol (E15) can be used.
Gasoline Adapted to Season
Seasonally adapted fuels are recommended. Refuel at high-traffic gas stations when season changes.
Note
- Do not use gasoline that does not meet specifications.
- Do not use ethanol fuels > E15 (e.g., E30–E100).
- Do not use methanol fuels > M5 (e.g., M100), engine and fuel system will be damaged.
- Ask gas station operator if unsure about gasoline mixture.
- Do not use unidentified gasoline mixtures; Audi is not responsible for damage or performance issues.
Gasoline Additives
Combustion residues may accumulate depending on fuel used. Use only approved TOP TIER Detergent Gasoline. Long-term use of incorrect fuels may impair engine performance.
Note
- Damage or malfunctions from incorrect fuel are not covered by New Vehicle Limited Warranty.
- Only Audi-approved gasoline additives may be used.
Refueling Messages
If the Ay indicator appears with a message, refuel immediately.
- Ay Tank system: malfunction! Contact authorized Audi dealer or Service Facility immediately.
Fueling Procedure
- Fuel filler door unlocked/locked by central locking system. Unlock vehicle if necessary.
- Press left side of fuel filler door to open.
- Unscrew fuel cap counterclockwise; place on open door.
- Insert fuel pump nozzle fully into filler neck; begin fueling.
- When nozzle shuts off first time, tank is full; do not continue.
- Wait 5 seconds after nozzle shuts off before removing.
- Turn fuel cap clockwise until it clicks; close fuel filler door until latched.
- Check label inside fuel filler door for correct fuel type.
- Refer to Technical Data (page 289) for tank capacity.
Warning
- Improper fueling can cause explosions, fires, burns, and injuries.
- No smoking; keep away from flames.
- Ignition must be off; mobile devices and radios off.
- Insert fuel nozzle fully to prevent leaks; spilled fuel can ignite.
- Never enter vehicle while refueling. If needed, touch metal surface before touching nozzle to prevent sparks.
