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How long do Lexus spark plugs last?


Spark plugs are a critical component of your Lexus vehicle's engine, ensuring smooth ignition and optimal performance. As a Lexus owner, understanding the lifespan of your spark plugs can help you maintain your car's efficiency and avoid unexpected breakdowns. In this article, we’ll explore how long Lexus spark plugs typically last and provide tips for maintaining them.


Typical Lifespan of Lexus Spark Plugs


The lifespan of Lexus spark plugs depends on the type of spark plugs installed in your vehicle. Lexus vehicles often come equipped with high-quality iridium or platinum spark plugs, which are designed to last longer than traditional copper spark plugs. On average:



  • Iridium spark plugs: These can last up to 120,000 miles under normal driving conditions.

  • Platinum spark plugs: These typically last around 60,000 to 100,000 miles.

  • Copper spark plugs: While less common in Lexus vehicles, these usually last about 20,000 to 30,000 miles.


It’s important to note that the actual lifespan of your spark plugs can vary based on factors such as driving habits, engine condition, and adherence to regular maintenance schedules.


Signs That Your Lexus Spark Plugs May Need Replacement


Even if your spark plugs haven’t reached their maximum lifespan, they may need replacement if you notice any of the following signs:



  • Engine misfires: A misfiring engine can indicate worn or damaged spark plugs.

  • Reduced fuel efficiency: Faulty spark plugs can cause your engine to burn more fuel than necessary.

  • Difficulty starting the engine: If your car struggles to start, it could be due to failing spark plugs.

  • Rough idling: A rough or uneven idle is another common symptom of spark plug issues.

  • Check engine light: A malfunctioning spark plug can trigger the check engine light on your dashboard.


Maintaining and Replacing Lexus Spark Plugs


To ensure your Lexus runs smoothly, follow these maintenance tips:



  • Adhere to the manufacturer’s recommended maintenance schedule, which can be found in your owner’s manual.

  • Have your spark plugs inspected during routine maintenance visits to catch any issues early.

  • Replace spark plugs with high-quality OEM (Original Equipment Manufacturer) parts to maintain performance and reliability.

  • Consider replacing the spark plug wires or ignition coils if they show signs of wear, as these components work closely with the spark plugs.


Conclusion


In general, Lexus spark plugs are built to last, with iridium and platinum options offering impressive durability. However, staying vigilant for signs of wear and following a regular maintenance schedule will help you avoid potential engine issues. If you’re unsure about the condition of your spark plugs or need assistance with replacement, don’t hesitate to contact a trusted auto repair shop like Kevin’s Autos. With years of experience in car maintenance and repair, we’re here to keep your Lexus running at its best!


Frequently Asked Questions

At what mileage do spark plugs go bad?


Your owner's manual recommends when to replace spark plugs. Some require changing at 25,000 miles or less, some at 50,000 miles, and others at 100,000 miles. Reduced acceleration, engine misfires, and rough idling are symptoms indicating you might need new spark plugs.



Can spark plugs last 10 years?


Even if you're not having problems, you'll still want to change spark plugs out at every 30,000-mile interval. For most drivers, that will mean that you're due for spark plug service once every 2-3 years!



Can spark plugs last 200k miles?


Typically, expect between 30,000 and 100,000 miles of usage. How do I know if my spark plugs need changing?



How do I know if spark plugs need replacing?


The most common signs of bad spark plugs include start-up trouble, rough idling, sluggish acceleration, declining fuel economy, engine misfiring, and engine knocking.



How much does it cost to replace spark plugs in a Lexus?


Lexus Spark Plug Replacement Cost Estimates
The average cost for a Spark Plug Replacement is between $384 and $455 but can vary from car to car.



How many miles do factory spark plugs last?


On average, the life of classic spark plugs is not more than 30,000 miles, and that of platinum and iridium is not more than 55,000 miles. The following are signs of malfunction that indicate the need to replace the spark plug: Deposits of ash or oil, soot, varnish or slag, melted or discolored electrodes.



When should Lexus spark plugs be replaced?


General Guidelines for Spark Plug Replacement
Although the aforementioned signs are reliable indicators, adhering to a structured maintenance schedule can preempt many potential issues. Generally, for modern Lexus models equipped with iridium or titanium spark plugs, replacement is recommended every 100,000 miles.



What are signs of bad spark plugs?


What are the signs your Spark Plugs are failing?

  • Engine has a rough idle. If your Spark Plugs are failing your engine will sound rough and jittery when running at idle.
  • Trouble starting. Car won't start and you're late for work… Flat battery?
  • Engine misfiring.
  • Engine surging.
  • High fuel consumption.
  • Lack of acceleration.



Can you drive a car with bad spark plugs?


Ideally, you should replace them immediately. However, you can get by for a short while, as long as they aren't misfiring. Poor spark keeps fuel from being burned inside the combustion chamber. This reduces power and fuel economy, and it makes it harder for the engine to idle.


Kevin's Auto

Kevin Bennett

Company Owner

Kevin Bennet is the founder and owner of Kevin's Autos, a leading automotive service provider in Australia. With a deep commitment to customer satisfaction and years of industry expertise, Kevin uses his blog to answer the most common questions posed by his customers. From maintenance tips to troubleshooting advice, Kevin's articles are designed to empower drivers with the knowledge they need to keep their vehicles running smoothly and safely.