At GDO Automotive, we know that even the smallest parts make a big difference. Spark plugs may look simple, but they are the key to your engine’s performance. They ignite the air-fuel mixture inside the cylinders, and without them, your car simply wouldn’t run.
What Do Spark Plugs Do?
Every time you start your car, spark plugs create a precise electrical spark that ignites the compressed air-fuel mixture. This ignition sets the pistons in motion, powers the crankshaft, and ultimately drives the wheels.
When spark plugs wear out, the result can be misfires, poor acceleration, increased fuel consumption, or even long-term engine damage.
Types of Spark Plugs
Today, three main types of spark plugs are used in most vehicles:
- Copper (Standard) – Affordable and widely available, but with the shortest lifespan.
- Platinum – Longer-lasting, more heat-resistant, and able to provide a more consistent ignition.
- Iridium – The most advanced option, offering maximum durability, efficiency, and performance.
💡 For brands like BMW, Audi, and Mercedes-Benz, using the correct spark plug type is critical. These engines are highly sensitive to spark quality, and the wrong choice can quickly affect performance.
Signs of Worn Spark Plugs
Not sure if it’s time to replace your spark plugs? Look out for these signs:
- Hard or slow engine start
- Rough idling or unusual vibrations
- Drop in fuel efficiency
- Weak acceleration or power loss
- Check Engine light activation
Replacement Intervals
How often spark plugs need to be replaced depends on their material:
- Copper: every 20,000–30,000 miles
- Platinum: every 50,000–60,000 miles
- Iridium: up to 80,000–100,000 miles
Driving style matters too. Stop-and-go traffic in areas like New York City, Philadelphia, or Newark will wear them faster than steady highway driving.
GDO Automotive Recommendations
- Always follow your manufacturer’s spark plug specifications — especially for BMW, Audi, and Mercedes-Benz models.
- Don’t delay replacements — worn plugs can damage ignition coils, increase fuel costs, and harm your catalytic converter.
- Schedule regular spark plug inspections to keep your car running at peak performance.
⚡ At GDO Automotive, we provide professional spark plug diagnostics, selection, and replacement for BMW, Audi, Mercedes-Benz, and many other models. Choosing the right spark plugs means smoother performance, better efficiency, and a longer-lasting engine.
👉 Book your appointment with GDO Automotive today and keep your car running the way it should.