Day 12: When Should You Replace Spark Plugs? (VW & Audi Guide)



Spark plugs are essential for proper engine performance.

Typical Replacement Intervals

  • Standard: 30k–50k miles
  • Platinum/Iridium: up to 100k miles

Signs of Worn Spark Plugs

  • Rough idle
  • Misfires
  • Poor fuel economy

VW & Audi Turbo Engines

Turbocharged engines put more stress on spark plugs, requiring more frequent replacement.

Why It Matters

Ignoring spark plug issues can damage ignition coils and reduce performance.

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