Replacing a clogged air filter can increase fuel efficiency and improve acceleration, depending on the make and model of your car. An old engine air filter can have a significant impact on vehicle efficiency, with the potential to improve fuel consumption by up to 10%. Additionally, replacing your cabin air filter on a regular basis can increase fuel consumption by 15%. Especially if you drive an old vehicle, aftermarket air filters can lead to increases in engine performance and an increase in fuel mileage rating.
However, these may be more noticeable on older cars, where the general air intake is formatted differently than newer models. For newer models, some “performance” air filters may only make a negligible difference (although this varies, of course, depending on the car model and type of air filter). Consult with an automotive professional about air filter options. The frequency with which the engine air filter will need to be replaced varies between different vehicle brands.
For example, Chevrolet recommends changing the filter every 45,000 miles, while Ford suggests every 30,000 miles on many of its engines. Hyundai also says every 30,000 miles, but shortens it to 15,000 for “severe driving conditions” such as heavy traffic in hot climates or frequent driving on unpaved roads or dusty conditions. Air filters aren't expensive and aren't even too complicated for a normal car owner to understand. Regardless of the exact numbers, a clean air filter obviously improves airflow to the engine and increases engine performance and fuel consumption.
The same is true if you live in a desert climate where large amounts of dust require the air filter to be changed more frequently. In most cases, a clogged or dirty air filter may not affect miles per gallon as much as other issues such as a flat tire, but it can definitely take power away from the engine. If you notice reduced airflow inside your climate control system, it's a sign that you need a new air filter. It's been scientifically proven that just by replacing a car's air filter, it's possible to get at least 10% more gasoline mileage. When you take your car to the mechanic, they will be able to do a quick scan to see what is causing the problem and they will tell you if it's an air filter problem.
Clogged air filters end up causing incorrect mixing of air and fuel, as well as spark plug ignition problems. The cabin air filter should also be changed periodically, but at a different time than the engine air cleaner. The main purpose of an automotive air cleaner is to ensure that large debris elements such as leaves, insects, dust, debris and other matter do not enter delicate engine systems. Replacing a dirty air filter will reduce emissions and increase energy production without costing you money. Air filters should be changed approximately every 12,000 to 15,000 miles, most often in dusty driving conditions. There are at least 5 benefits of changing your air filter regularly: better gasoline performance, reduced emissions, improved acceleration, longer engine life, and overall improved driving.