Important!
This replacement procedure can be used for:
MERCEDES-BENZ A-Class (W168) A 160 (168.033, 168.133)

The steps may slightly vary depending on the car design.

How to change spark plug on MERCEDES-BENZ A160 (W168) [TUTORIAL AUTODOC]

Replacement: spark plugs – Mercedes W168. Tools you need:
Replacement: spark plugs – Mercedes W168. Tools you need:
High-temperature anti-seize lubricant
Drive socket # E11
Drive socket # 16
Ratchet wrench
Torque wrench
Fender cover
All the parts you need to replace – Spark Plug for A-Class (W168) and other MERCEDES-BENZ models
How to change Spark Plug on Mercedes W168 A 140 1.4 (168.031, 168.131) – step-by-step instructions for straightforward car repair
Spark Plug
How to change Spark Plug on MERCEDES-BENZ A-Class (W168) A 160 (168.033, 168.133) – tips for proper car maintenance
MERCEDES-BENZ A-Class (W168) A 160 (168.033, 168.133)
Replacement: spark plugs – Mercedes W168. AUTODOC experts recommend:
  • The replacement procedure is the same for all spark plugs.
  • All work should be done with the engine stopped.
Replacement: spark plugs – Mercedes W168. Recommended sequence of steps:
  1. How to change Spark Plug on Mercedes W168 1997 - free PDF and video manuals
    Step 1
    Open the hood.
  2. How to replace MERCEDES-BENZ A-Class (W168) A 140 1.4 (168.031, 168.131) 1998 Spark Plug - step-by-step manuals and video guides
    Step 2
    Use a fender protection cover to prevent damaging paintwork and plastic parts of the car.
    Step 3
    Detach the connector from the ignition coil.
  3. Mercedes W168 A 170 CDI 1.7 (168.009, 168.109) 1999 Spark Plug replacement: free workshop manuals
    Step 4
    Unscrew the ignition coil bracket.Use a drive socket #E11.Use a ratchet wrench.
  4. Changing Spark Plug on MERCEDES-BENZ A-Class (W168) A 170 CDI 1.7 (168.008) 2000 by yourself
    Step 5
    Take out the ignition coil from the spark plug well.
  5. How to remove MERCEDES-BENZ A-CLASS A 190 1.9 (168.032, 168.132) 2001 Spark Plug - online easy-to-follow instructions
    Step 6
    Unscrew the spark plugs. Use the spark plug socket #16.Use a ratchet wrench.
  6. How to replace Spark Plug on MERCEDES-BENZ A-Class (W168) 2002: download PDF manuals and video instructions
    Step 7
    Take out the spark plugs.
  7. How hard is it to do yourself: Spark Plug replacement on Mercedes W168 A 160 CDI 1.7 (168.006) 2003 - download illustrated guide
    Step 8
    Apply a thin layer of a special high temperature anti-seize lubricant to the threads of the new spark plugs.
  8. Need to know how to renew Spark Plug on MERCEDES-BENZ A-CLASS ? This free workshop manual will help you to do it yourself
    Step 9
    Install the new spark plugs into their mounting seats.
  9. Changing of Spark Plug on Mercedes W168 1997 won't be an issue if you follow this illustrated step-by-step guide
    Step 10
    Screw new spark plugs and tighten them.Use the spark plug socket #16.Use a torque wrench.Tighten it to 27 nm torque.
    Replacement: spark plugs – Mercedes W168. Professionals recommend:
    Don't tighten the plugs with excessive force. Exceeding tightening torque can damage the thread connection. Be careful when working with a spark plug wrench. Its skewing can cause damage to the threaded connection.
  10. MERCEDES-BENZ A-CLASS A 160 CDI 1.7 (168.007) Spark Plug replacement: online guides and video tutorials
    Step 11
    Install the ignition coil to the spark plug well.Make sure you hear a click indicating that it is locked in place.
  11. Replacing Spark Plug on Mercedes W168 1999 A 140 1.4 (168.031, 168.131) by yourself
    Step 12
    Tighten the ignition coil fastening.Use a drive socket #E11.Use a torque wrench.Tighten it to 15 nm torque.
  12. A-Class (W168) A 190 1.9 (168.032, 168.132) 2000 Spark Plug DIY replacement workshop manual
    Step 13
    Plug in the ignition coil connector.
  13. How to change Spark Plug on MERCEDES-BENZ A-Class (W168) 2001 - tips and tricks
    Step 14
    Run the engine for a few minutes.This is necessary in order to make sure that the component operates properly.
  14. Step-by-step recommendations for DIY replacement Mercedes W168 2002 A 190 1.9 (168.032, 168.132) Spark Plug
    Step 15
    Shut off the engine.
  15. DIY replacement of Spark Plug on MERCEDES-BENZ A-Class (W168) A 160 1.6 (168.033, 168.133) 2003 is not an issue anymore with our step-by-step tutorial
    Step 16
    Remove the fender protection cover.
    Step 17
    Close the hood.
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DIY MERCEDES-BENZ A-Class (W168) Spark Plug replacement - online guide
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