How Often to Change Spark Plugs

When customers from Carlsbad and Vista come to us, one of the most frequent questions we hear is, “When do I change spark plugs in my car?” Whether you have a new Jeep Wrangler from us or an older used model, it’s recommended that you replace your spark plugs every 30,000 miles. This number can vary, of course, based on the specific model you have, so it’s also good to check your vehicle’s owner’s manual. Want to know more about how often you should change spark plugs in your car? Continue below and allow the experts at Jack Powell Chrysler Dodge Jeep Ram to tell you all you need to know!
When Do I Change Spark Plugs?
While they may be small, spark plugs play a large role in moving the high voltage current from the ignition coil to ignite the combustion chamber so that your vehicle can start up. When spark plugs aren’t working properly in a vehicle, you may not be able to start your car. Here are some other issues that come along with having malfunctioning spark plugs:
- Engine misfire
- Rough idling
- Higher than normal fuel consumption
- Slow or no start
- Poor acceleration
- Rough-running engine

Benefits of Changing Your Spark Plugs
Changing your spark plugs ensures that you’ll avoid the problems listed above, but there are a handful of additional benefits. These include:
- Your Vehicle Starts Smoothly – Of course, if you change your spark plugs and get brand new ones installed, your vehicle should have no problem starting up with little to no effort.
- Improved fuel economy – You may see a reduction of gas mileage as much as 30% if you are driving a car with old spark plugs. Replace your spark plugs and you should see an increase in your fuel economy.
- Less harmful emissions – Not only will you see an increase in gas mileage, but if you replace your spark plugs, your vehicle should have less harmful emissions.
- Consistent combustion system – Spark plugs allow for the continuous production of combustion and leave your vehicle’s system running as it should be.
Come to Jack Powell Chrysler Dodge Jeep Ram Near San Marcos for Your Car Maintenance Needs
Now that you know how often to change spark plugs, it may be time to replace them! Contact us for more information and be sure to schedule a service appointment as soon as you think you need maintenance performed on your vehicle. While you’re here, be sure to take a look at our service specials and save some money on your visit! For more, you can learn all there is to know about serpentine belts and timing belts with our experts.
View Our Service Specials
Free Battery Test
Receive a free battery test and installation. We have a large inventory of batteries onsite and and can change yours quickly for no extra fees except the cost of the battery.
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1625 Auto Park Way, Escondido, CA 92029
Service: (760) 546-9851
Free Battery Test
Receive a free battery test and installation. We have a large inventory of batteries onsite and and can change yours quickly for no extra fees except the cost of the battery.
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Receive a free car rental with any recall repair.
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1625 Auto Park Way, Escondido, CA 92029
Service: (760) 546-9851
Free Rental with any Recall Repair
Receive a free car rental with any recall repair.
Oil Change & Tire Rotation
Three oil changes and three tire rotations package for $189.95
See your service advisor for detail. excludes diesels and synthetic vehicles.
1625 Auto Park Way, Escondido, CA 92029
Service: (760) 546-9851
Oil Change & Tire Rotation
Three oil changes and three tire rotations package for $189.95
Four Wheel Alignment
Four wheel alignment $129.95 on most vehicles.
See your service advisor for details
1625 Auto Park Way, Escondido, CA 92029
Service: (760) 546-9851
Four Wheel Alignment
Four wheel alignment $129.95 on most vehicles.
$500 off any Major Mopar Vehicle Protection Plans
Tired of paying expensive repair bills? $500 off any major Mopar Vehicle Protection Plans.
https://www.jackpowell.com/wp/wp-admin/post-new.php?post_type=fixed_op
See service advisor for details.
1625 Auto Park Way, Escondido, CA 92029
Service: (760) 546-9851
$500 off any Major Mopar Vehicle Protection Plans
Tired of paying expensive repair bills? $500 off any major Mopar Vehicle Protection Plans.
https://www.jackpowell.com/wp/wp-admin/post-new.php?post_type=fixed_op
JACK POWELL CDJR TIRE PRICE MATCH GUARANTEE
“Jack Powell’s price match guarantee, you’ll always get the best deal on tires— show us a lower quote and we’ll match it from the experts you can trust!”
The lower price must be for the exact same tire brand, model, size, and specification from a local retailer. Customers must present a qualifying quote for identical tires (brand, model, size, speed/load rating) Cannot be combined with the “Buy 3, Get the 4th for $1” or any other promotions. Contact Service or Parts Advisor for more details. Expires 12/31/2026.
1625 Auto Park Way, Escondido, CA 92029
Service: (760) 546-9851
JACK POWELL CDJR TIRE PRICE MATCH GUARANTEE
Expires: December 31, 2026
“Jack Powell’s price match guarantee, you’ll always get the best deal on tires— show us a lower quote and we’ll match it from the experts you can trust!”