Spark Plug Replacement

Some auto manufacturers recommend 100,000+ mile spark plug replacements; we’ve discovered that many drivers seem to believe that all cars have 100,000-mile plugs. Unfortunately, this isn’t the case! Spark plugs have become more reliable and longer lasting over the decades, and some premium spark plugs are actually designed to last up to 5 years or 100,000 miles. However, waiting too long for spark plug repair or replacement can affect the efficiency and performance of your vehicle, which is why many service intervals are significantly less—typically 30,000 miles.  

For this reason, we recommend following the spark plug replacement interval suggested by your vehicle’s manufacturer—as well as the same type of spark plugs. Using a different brand of spark plugs can cause drivability issues in some cars. It’s also important to keep your driving habits and conditions in mind when determining replacement intervals. Check your owner’s manual for the recommended service interval or ask your service advisor.

Some common signs you need spark plug repair include:

  • Difficulty starting your vehicle
  • Engine misfires
  • Poor fuel economy
  • Rough, loud idling
  • Your car struggles to accelerate
  • The check engine light is on
  • The engine sounds louder than normal

When you need spark plug replacement, visit the skilled professionals at Certified Automotive Specialists. Since 1978, we’ve prided ourselves on offering the best auto repairs and maintenance in the area. Our shop is ASE-certified and AAA-approved—we’ve also been named one of the top 10 auto repair shops in the nation by Motor Age magazine! From oil changes to engine and spark plug repair, there’s no job too big or small for our talented technicians. 

Certified Auto Specialists: the friendlier and more helpful auto shop! Feel free to call 626-963-0814 with any questions and we will be glad to help, or visit our website at

Hometown Service You Can Count On!