
According to the vehicle's maintenance manual, the car's air filter should generally be replaced every 10,000 to 20,000 kilometers or during every other maintenance service. However, it is recommended to clean the air filter every 5,000 kilometers to reduce the buildup of throttle sludge. The location of the air filter varies depending on the intake system design and engine structure. It is typically located within the air cleaner housing attached to the engine's intake pipe. There are two types of automotive air filters: dry and wet. Dry filters are made of paper or organic materials, while wet filters are constructed with metal mesh. The function of the air filter is to remove particulate impurities from the air, ensuring sufficient clean air enters the cylinders and preventing airborne dust from being drawn into the engine, which accelerates wear on piston assemblies and cylinders. Mercedes C-Class Air Filter Replacement Tutorial Location: Right side of the engine bay, connected to a prominent large intake pipe. The tools required for removing the air filter are common and should be prepared in advance (Phillips screwdriver, flathead screwdriver, hex socket, etc.). Locate the air filter housing and use the appropriate tools to loosen the fasteners. Lift the air filter housing cover to access the old filter. To determine if the filter needs replacement, it is convenient to remove it from the housing. If the filter is slightly dirty, it can be cleaned with compressed air and reused. However, if the filter is damaged or excessively dirty, it should be replaced immediately. Note: Some models may require disconnecting rubber couplings when removing the air filter. Air Filter: A filtration device also known as an air filter cartridge, air cleaner, or air element. It is primarily used in engineering vehicles, automobiles, agricultural machinery, laboratories, sterile operating rooms, and various precision workspaces. The engine draws in large amounts of air during operation. Without filtration, airborne dust entering the cylinders accelerates wear on piston assemblies and cylinders. Larger particles entering between pistons and cylinders can cause severe cylinder scoring, particularly in dry and sandy environments. The air cleaner is installed before the carburetor or intake manifold to filter out dust and sand, ensuring sufficient clean air enters the cylinders. Dirty Air Filter: Using a heavily soiled air filter while driving can restrict engine airflow, leading to incomplete fuel combustion. This results in unstable engine operation, reduced power, and increased fuel consumption. Therefore, it is essential to keep the air filter clean. The automotive air filter is a device that removes particulate impurities from the air, consisting of one or more filtration components. Its primary function is to filter harmful impurities from the air before it enters the cylinders, reducing premature wear on cylinders, pistons, piston rings, valves, and valve seats. Thus, air must pass through the fine filtration of the air cleaner before entering the cylinders. A dirty air filter can cause poor engine performance, excessive fuel consumption, and engine damage. When inspecting the air filter, if minimal dust and light clogging are observed, it can be cleaned with high-pressure air from the inside out and reused. Severely dirty air filters should be replaced promptly.

When it comes to replacing the air filter for Mercedes-Benz, my experience driving one over the years is this: it’s generally recommended to change it every 15,000 kilometers or at least once a year. The air filter is a crucial component for protecting the engine, as it filters out dust and impurities, preventing dirt from entering and damaging the engine. If you mostly drive in urban areas where the air is cleaner, you can extend the interval to around 20,000 kilometers. However, if you frequently drive on construction sites or in dusty environments, it’s best to shorten the replacement interval to 10,000 kilometers. Personally, I always check it during routine maintenance—take it out and see how dirty it is, then replace it promptly if needed. The Mercedes owner’s manual usually provides specific recommendations, so don’t overlook those details. Keeping up with this helps the car run smoother and improves fuel efficiency. Remember, regular replacements prevent major repairs down the line, saving both money and hassle.

I always remind my friends to replace the Mercedes air filter regularly. Generally, Mercedes recommends changing it every 12,000 to 15,000 kilometers or every 12 months regardless of mileage. This part isn't expensive but plays a crucial role—it filters out dirt from the intake air, keeping the engine breathing smoothly. If left unchanged for too long, a clogged filter will make the engine work harder, increase fuel consumption, and potentially cause carbon buildup that doubles repair costs. Having driven in various climate zones, I've found replacement intervals should be shorter in humid or dusty conditions. Just have your technician check the airflow during each maintenance—this simple preventive measure extends engine life and gives you peace of mind while driving.

Regarding the replacement of the Mercedes-Benz air filter, I believe the most practical approach is to decide based on the environment. For example, in cities with less pollution, replacing it every 15,000 kilometers is sufficient. However, for someone like me who often drives on dusty roads, it's necessary to check and replace it every 10,000 kilometers. Not replacing it in time can obstruct the engine's air intake, affecting both power and fuel efficiency. Mercedes-Benz generally recommends handling it during regular maintenance, but you can also check the filter yourself by observing its color: if it's dirty and darkened, replace it promptly. It's simple and protects your car.

From an economic perspective, replacing the Mercedes air filter is a cost-effective investment. Typically, it should be changed every 15,000 kilometers or once a year, with a low cost ranging from tens to a little over a hundred yuan. Neglecting it can lead to a dirty filter, causing the engine to consume more fuel and increasing fuel costs by 10%. In the long run, this can result in significant losses. I prefer buying the parts and replacing them myself—it's an easy process that ensures smooth airflow to protect the engine and reduces the risk of expensive repairs, making driving more economical and efficient.


