03/11/2026
Think of your spark plugs as the "matchstick" of your .
They provide the literal spark that ignites the air-fuel mixture, creating the explosion that pushes your car down the road. If those matches are damp or worn out, your engine is going to struggle.
While spark plugs are small, their impact on your vehicle’s health is massive.
Here is what happens when you keep them fresh:
Peak Fuel Economy: Worn plugs can misfire, wasting fuel and dropping your gas mileage by as much as 30%.
Smooth Starts: Old plugs have a hard time arching a spark. Fresh plugs ensure your car rumbles to life instantly, even on cold mornings.
Engine Longevity: Misfires caused by bad plugs send unburned fuel into the exhaust system, which can overheat and destroy your expensive catalytic converter.
Consistent Power: New plugs provide a reliable, crisp combustion cycle, eliminating that "sluggish" feeling when you hit the gas.
When to Make the Swap
Most modern spark plugs are designed to last between 30,000 and 100,000 miles, depending on whether they are made of copper, platinum, or iridium.
However, if you notice rough idling, jerking during acceleration, or a Check Engine light, it’s time to check them regardless of the mileage.
Pro Tip: Changing spark plugs is one of the most cost-effective ways to "tune up" your car. It’s a small investment that prevents four-figure repair bills later.
Call Grand Auto Repair Mobile Mechanic for free estimate on your vehicle’s spark plugs replacement
469-999-3141
