Think of spark plugs as your engine's matchsticks. Every time you press the gas pedal, these small but mighty components create the electrical spark that ignites the fuel-air mixture in your engine's cylinders. When it's time to change spark plugs, your car will usually tell you, though not always in ways you'd expect. https://mechconnect.de/en/blog/the-three-pillars-of-car-health-what-your-vehicle-really-needs