How often should the air filter of BMW 3 Series be replaced?
2 Answers
The replacement cycle for the air filter of BMW 3 Series is 30,000 kilometers, and the owner can check and clean it once at 5,000 kilometers. The car air conditioning filter can separate solid impurities such as dust, pollen, and grinding particles in the air, and also absorb moisture, soot, ozone, odors, carbon oxides, SO2, and CO2 in the air. The BMW 3 Series is a new generation car product of BMW Group. The body weight of this car is 1,465 kilograms, equipped with an inline 4-cylinder gasoline engine. The car dimensions are 4,734 mm in length, 1,811 mm in width, and 1,455 mm in height, with a wheelbase of 2,920 mm.
I've been driving a BMW 3 Series for several years and always pay special attention to the air filter during maintenance. Based on my experience, the air filter should typically be replaced every 12,000 miles or annually – don't delay it too long. Once when I drove frequently on dusty rural roads, the filter got extremely dirty after just 8,000 miles, nearly letting impurities into the engine and increasing wear. Since then, I've developed a habit of checking the filter every 3 months by opening the hood myself. If it turns black or feels gritty with accumulated dust, it needs replacement ahead of schedule. Don't underestimate this small component – it blocks dust and insects from entering the engine, maintains smooth airflow, prevents fuel efficiency drops, and extends vehicle lifespan. I recommend fellow drivers pay attention to their driving environment. City driving might be easier on filters, but those frequently traveling on sandy or dirt roads should inspect more often. Regular replacement keeps your car breathing smoothly, saving fuel and hassle. I always keep a spare filter in my garage just in case.
