Skip to main content

How often do you change the engine’s air filter? (And how to do it in 5 minutes)

One of your vehicle's most essential maintenance tasks is the cheapest and easiest to tackle yourself

Changing your car's engine air filter is critical. But before you start poking at things under the hood, it's important to understand that your car actually has two air filters: A cabin air filter and an engine air filter (a.k.a. “vehicle air filter”). The cabin air filter ensures that passengers have clean air to breathe. This is an especially important component for city dwellers or anyone who lives in an area with poor air quality. The engine air filter, on the other hand, keeps the air your engine “breathes” clean and free of dirt, dust, and other particles — all of which can affect how efficiently your car runs. A dirty air filter can result in ignition problems, lower gas mileage, and, if neglected over the long-term, shortened engine life.




10 minutes

What You Need

  • New engine air filter

  • Screwdriver, pliers, or socket set (optional, depending on the vehicle make and model)

Every modern vehicle engine is a little different, but all require a steady mix of fuel and oxygen to run properly. Imagine trying to breathe through a face mask caked in dirt, dust, and other environmental contaminants. That’s what it’s like for your engine to run with a dirty engine air filter. Thankfully, changing the filter is one of the simplest and cheapest routine maintenance items to tackle. (Even easier than changing your oil!) Modern engine air filters are easy to access and typically require few or no tools to replace. Here’s the lowdown on how often to change the engine air filter and how you can even do it yourself in less than five minutes.

how often to change the engine air filter man working car tools

How to replace the engine air filter in your car in just 5 minutes

Step 1: Open your vehicle’s hood. To locate the engine air filter housing, look for a large, usually black, plastic box sitting atop or to the side of the engine. There should be a large hose coming out of one side.

Step 2: Note how the filter housing is secured. In most cases, two hands and some elbow grease are all that’s required to open it. Some manufacturers, however, use clamps, clips, screws, wing nuts, or a combination of these, in which case you’ll need an appropriate tool.

Step 3: Open the top of the housing. Remove and discard the old air filter. Wipe any remaining debris from inside the housing with a shop rag.

Step 4: Note how the existing air filter is installed. Install the new engine air filter by placing it inside the housing with the rubber rim facing up. Ensure it’s seated properly and snugly inside the housing.

Step 5: Close the filter housing and replace any fasteners (screws, clips, etc.) removed in Step Two. Close the hood, and pat yourself on the back for a job well done (and money well saved). That’s it!

Man looking under the hood of a car with a flashlight.

How often do I need to replace the air filter in my car?

All air filters, including engine air filters, should be replaced regularly. The short answer for exactly when to replace yours is: It depends. Your vehicle’s year, make, and model, how you drive, and even where you drive — if it happens to be in an area that’s hotter or more polluted than normal — can all affect the filter-changing schedule. The easiest way to know for sure how often to change the engine air filter is to check the maintenance section of your owner’s manual or simply Google to find the manufacturer’s recommended service interval. This can vary widely from 15,000 miles in severe driving conditions to as much as 45,000 miles.

A visual inspection is usually enough to provide a “status check.” New filters are stark white or off-white. A dirty engine air filter will usually look dirty with visible dirt, dust, or stains inside the pleats. If in doubt, any reputable mechanic in your area will be able to tell you for sure. As a rule of thumb, most average drivers should be able to go one to two years before needing a new air filter. A word of warning: Any mechanic who recommends a new engine air filter every time you bring your vehicle in for an oil change (i.e., every 3,000-5,000 miles) is a red flag.

Technician checking under the hood of a car.
How to check your car fluids. Photo by Kenny Eliason on Unsplash

How often to replace the cabin air filter in your car

Like vehicle air filters, cabin air filters should also be changed regularly as part of your vehicle’s routine maintenance. Most manufacturers recommend scheduled intervals between 15,000 to as high as 45,000 miles. To simplify things, consider changing both of your car’s filters at the same time. The good news is that replacing the cabin air filter in your car is even easier and cheaper than changing the engine air filter. It’s something anyone can do in less than five minutes with few or no tools required. New cabin air filters are readily available on Amazon and at most typical automotive retailers.

Why is changing an engine air filter important?

While changing the engine air filter is one the easier pieces of maintenance a car owner can do, an air filter is an important part of your car's engine. It keeps contaminants, big and small, out of the engine to ensure it has clean air to keep it running. There's a small chance that a dirty air filter will allow dirt and small pieces of debris to get into your engine. A dirty air filter will also sap performance and reduce fuel economy. Regularly changing your car's air filter will prolong the life of the engine, reduce emissions, improve fuel economy, and, depending on what kind of filter you use, could even bring some extra performance. The benefits far outweigh the small amount of time and effort it takes to complete.

Modern vehicles are far more complex than their predecessors. That means most maintenance tasks require a professional — a mechanic with proper training, tools, and specialized hardware — to tackle. Thankfully, changing your car's air filters isn't one of those tasks. Armed with the easy-to-follow directions above, a little determination, and a new air filter, you can easily swap out your vehicle's air filters on your own with little to no tools necessary.

Editors' Recommendations

Mike Richard
Mike Richard has traveled the world since 2008. He's kayaked in Antarctica, tracked endangered African wild dogs in South…
5 simple garage organization tips for better car and motorcycle care
You'll be surprised how useful your garage can be when it's clean and organized
A cluttered garage with tools on shelves and a dirty floor.

For many people, garages are out of sight and out of mind. Who cares if they’re dirty, dark, or dingy? The majority of homeowners use garages to store items, not as the location for a block party. While organizing a garage can seem like a tedious waste of time, spending some time to get your garage in order will make it far easier to work on cars or other hobbies and could even help you find some extra space to store an extra engine for your track car, a new-to-you motorcycle, or another fun vehicle.

Read more
How to clean headlights using 2 popular methods
Don't neglect your headlights? Here's how to clean them in a snap
Man cleaning front headlight on Toyota RAV4 using Meguiar's Quick Detailer.

Over time, headlights will pick up every day dirt and grim just like the rest of your car. It's important not to ignore the headlights when cleaning your car though. Just like the rest of your vehicle, headlights need some TLC. Dirty headlights won't shine properly at night or in the daytime. Before giving them a scrub though, take a few minutes to learn how to clean headlights the right way.

Read more
These are the items you should always have in your vehicle in case of emergency
winter roadside emergency kit.

Depending on where you live, snow may or may not be a big deal. Folks living in certain parts of New York or Arizona look forward to over 100 inches of snow every year, so seeing white stuff fall from the sky isn't exactly special, nor is it an emergency, for the residents. Not only are citizens in these areas well-practiced at driving in wintery conditions, but their local governments are well-equipped to handle have snows.

Things are dramatically different in the southern parts of the United States. A few inches of snow in southern states will cause all hell to break loose. Bread, milk, and toilet paper vanish from grocery store shelves, schools close, businesses shut down, cars are abandoned on the interstate ... people panic, basically. Don't be one of those people.

Read more