In order to burn fuel efficiently, your vehicle’s engine needs access to a large quantity of clean air—around 216,000 gallons for every tank of gas it consumes. The engine air filter plays a crucial role in catching dust and dirt particles so that only clean air enters the engine. However, if the filter becomes clogged and reaches its capacity, it can cause contaminants to reach the engine and cause a variety of issues. 

How Does a Dirty Air Affect the Engine?

Dirty air passing through the air filter affects goes on to affect the mass airflow sensor. The mass air flow sensors measure the amount of air entering your engine, ensuring it receives the right ratio of air and fuel needed for proper combustion. However, if it’s contaminated by dirty air, the mass air flow can provide incorrect readings. As a result, your engine won’t receive the appropriate amount of fuel, which can lead to it running rough and poor performance. 

Here’s where things can get a bit costly. If the mass airflow sensor becomes severely damaged, it may need to be replaced, and sensor replacements are not cheap. In fact, the cost of replacing a damaged sensor could easily equate to the price of several cases of air filters—a significant expense that can be avoided by simply replacing your filters on a regular schedule!

Unfortunately, it’s not just your wallet that takes a hit when you neglect your engine air filter. The dirty air continues its journey through your engine, where it mixes with the fuel and gets burned. This process causes contaminants to build up in the combustion chamber, which, in turn, increases harmful exhaust emissions. 

How Often Should You Change Your Engine Air Filter? 

Although recommendations can vary depending on the type of vehicle you have and your driving habits, engine air filters should typically be changed every 30,000-45,000 miles. If you frequently drive in dusty conditions, like dirt roads, you may need to have it changed more often. 

If you haven’t kept track of your replacement intervals or are overdue for a replacement, you may notice the following signs: 

• Engine misfires
• Black smoke from the exhaust 
• The check engine light is on
• Engine hesitation 
• Engine sputtering or popping noises
• Low gas mileage

This is where EuroCar Service comes in! With over 40 years of experience in auto maintenance and repairs, we’re here to keep your vehicle performing its best. Whether you need a simple engine replacement or to diagnose engine issues, our skilled ASE-certified team will have your car, truck, or SUV back on the road in no time. 

We specialize in all European vehicles, including BMW, Audi, Land Rover, Mercedes, Mini-Cooper, Saab, Jaguar, Volkswagen, Volvo, Smart Car, and Fiat! Call us today at (206) 527-8828 or request an appointment online. 

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