When to replace the Spark Plug on your AUDI A5
Recommended replacement interval for the part category Spark plug : 6 year / 60000 km
This replacement procedure can be used for:
AUDI A5 Coupe (8T3) 2.0 TFSI quattro, AUDI A5 Coupe (8T3) 1.8 TFSI, AUDI A5 Coupe (8T3) 2.0 TFSI quattro, AUDI A5 Coupe (8T3) 2.0 TFSI, AUDI A5 Coupe (8T3) 2.0 TFSI, AUDI A5 Coupe (8T3) 1.8 TFSI View more

The steps may slightly vary depending on the car design.

This video shows the replacement procedure of a similar car part on another vehicle

Replacement: spark plugs – AUDI A5 (8T3). Tools you'll need:
High-temperature anti-seize lubricant
Electronic spray
Spark plug socket # 16
Ratchet wrench
Torque wrench
Crow bar
Fender cover
Replacement: spark plugs – AUDI A5 (8T3). Professionals recommend:
  • The replacement procedure is the same for all spark plugs.
  • All work should be done with the engine stopped.
Replacement: spark plugs – AUDI A5 (8T3). Take the following steps:
  1. Step 1
    Open the hood.
    Step 2
    Use a fender protection cover to prevent damaging paintwork and plastic parts of the car.
    Step 3
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    Remove the engine cover.
  2. Step 4
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    Unplug the connectors from the ignition coils.
  3. Step 5
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    Raise a little the wiring of the ignition coils and move it aside.
  4. Step 6
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    Pry up the ignition coil (4 pieces). Use a crowbar.
  5. Step 7
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    Take out the ignition coils from the spark plug wells.
    Replacement: spark plugs – AUDI A5 (8T3). Tip:
    Remember the sequence of steps for ignition coil demounting.
  6. Step 8
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    Clean dirt, dust and debris from inside the spark plug wells.
  7. Step 9
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    Unscrew the spark plugs. Use the spark plug socket #16. Use a ratchet wrench.
  8. Step 10
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    Take out the spark plugs.
  9. Step 11
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    Apply a thin layer of a special high temperature anti-seize lubricant to the threads of the new spark plugs. Treat the surface of the terminals of the new spark plugs. Use high-temperature grease.
  10. Step 12
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    Install the new spark plugs into their mounting seats.
  11. Step 13
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    Screw new spark plugs and tighten them. Use the spark plug socket #16. Use a torque wrench. Tighten it to 25 nm torque.
    Replacement: spark plugs – AUDI A5 (8T3). AUTODOC recommends:
    Be careful when working with a spark plug wrench. Its skewing can cause damage to the threaded connection.Don't tighten the plugs with excessive force. Exceeding tightening torque can damage the thread connection. 
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DIY AUDI A5 Coupe (8T3) Spark Plug replacement - online guide
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