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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