Your car's cabin air filter is more important than you think. Even though it has nothing to do with the drivetrain, it's what cleans the air that actually comes into the car while driving. Leave it unchanged for too long, and bad things will start to happen. Here's a quick video guide demonstrating how to easily inspect and change your car's cabin air filter.
Though dealers can charge up to $100 to change your cabin air filter, doing it yourself can save a bunch of time and money. New filters cost around $30 at most, and the time it'll take you to actually replace it is no more than 10 to 20 minutes. Brothers Bozi and Bojan Tatarevic, friends of Road & Track and founders of the YouTube channel, demonstrate just how easy the process is in their latest video using a Subaru WRX.
Most new cars have their cabin air filters in a slot behind the glove box. It's as easy as removing the glove box, reaching in to remove the air filter bracket, inspecting the filter for dirt and grime, and replacing it if needed. Though all cars are different, you should inspect your cabin air filter once every 10,000 miles.
Now you don't have to worry about having to take your car to the dealer and paying them a bunch of money to do it for you. Nice!