How Often Should I Change My Engine Air Filter?

The engine of your car needs to use air to burn fuel. If this air is dirty or contains foreign matter like bugs and dust, it can impact your engine's performance or even cause harm to it. That's why your engine uses an air filter to help minimize the number of contaminants in the air that reaches the engine.

What Is the Engine Air Filter?

The engine air filter is a pleated paper or cotton filter that sits inside the airbox in your car, adjacent to the engine. It catches dust and other contaminants so that they can't enter the engine. If it wasn't for the air filter, this matter would act as an abrasive and damage the function of the engine.

A dirty air filter won't allow contaminants into your engine unless it's faulty or damaged. It will, however, reduce airflow into your engine and this can lead to more fuel being burnt as your vehicle will run less efficiently. Replacing a dirty air filter saves you money.

How Often Should the Filter Be Changed?

On average, your engine air filter should be changed every 30,000 miles. In most cases, this means that you'll need to start thinking about replacing the filter about once a year. If you often drive around on very busy or dusty roads you may need to replace the air filter as early as after 15,000 miles.

Some of the signs that you may have a dirty engine air filter include:

  • Reduced fuel efficiency
  • Strange engine sounds
  • Dirtier exhaust
  • The engine light activating

You can also see the condition of the air filter yourself and this is the best way to determine its condition and ensure that it is performing correctly. If the air filter has blackened or many dark areas or is particularly dusty, these are signs that your air filter is nearing the end of its effective lifespan. The performance of your engine is likely beginning to suffer as a result.

Replacing a dirty engine air filter is important to maintaining your vehicle and reducing running costs by improving fuel efficiency. If you need engine air filter replacement, we invite you to bring your vehicle to our auto repair shop today!