How Often Should You Replace Spark Plugs?
- Idea Forge
- Nov 13
- 2 min read

Spark plugs are small but vital components of your vehicle’s engine. They ignite the air-fuel mixture, powering your car. Over time, spark plugs wear out and need replacement to keep your engine running efficiently. But how often should you replace them? DM Motorsports in Midland Mint Hill, NC breaks down everything you need to know.
Why Spark Plug Replacement Matters
Worn or faulty spark plugs can cause:
Engine misfires
Reduced fuel efficiency
Difficulty starting your car
Rough idling or poor acceleration
Replacing spark plugs on time ensures smooth engine performance and helps avoid costly repairs.
How Often Should You Replace Spark Plugs?
The replacement interval depends on several factors:
Type of Spark Plugs
Copper spark plugs generally last about 20,000 to 30,000 miles.
Platinum spark plugs last longer, roughly 60,000 miles.
Iridium spark plugs offer the longest lifespan, often 100,000 miles or more.
Driving Conditions
Frequent short trips, stop-and-go traffic, and harsh weather can cause spark plugs to wear out faster.
Manufacturer Recommendations
Always check your vehicle’s owner manual for specific guidance on spark plug replacement intervals.
Signs You Need to Replace Your Spark Plugs
Look out for these warning signs:
Poor fuel economy despite regular driving habits
Engine misfires or hesitation during acceleration
Hard starts or stalling
Rough idling or noticeable engine vibrations
If you notice any of these, it’s a good idea to have your spark plugs inspected.
Why Choose DM Motorsports in Midland Mint Hill, NC?
At DM Motorsports, we specialize in engine care and preventative maintenance to keep your car running safely and efficiently. Our expert technicians will assess your spark plugs and replace them when necessary using high-quality parts.
Don’t wait for spark plug problems to affect your vehicle’s performance. Contact DM Motorsports in Midland Mint Hill, NC today for a spark plug inspection or replacement and keep your engine firing on all cylinders.





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