Where is the cabin air filter located in the BMW 3 Series?
2 Answers
The cabin air filter in the BMW 3 Series is located inside the glove compartment on the passenger side. The functions of the cabin air filter are: 1. To separate dust, pollen, and abrasive particles from the air; 2. To ensure clean air in the cabin and prevent bacterial growth. Taking the BMW 320i as an example, its body dimensions are: length 4719 mm, width 1827 mm, height 1459 mm, wheelbase 2851 mm, fuel tank capacity 59 liters, and body structure is a 4-door 5-seater sedan. The BMW 320i is equipped with a 2.0T turbocharged engine, with a maximum power of 115 kW, maximum power speed of 4500 to 6500 rpm, and maximum torque of 250 Nm.
I've replaced the BMW 3 Series' cabin air filter several times myself. It's located in the front footwell of the passenger side, under a plastic cover that can be pried open with some force to reveal the filter. Each time, I simply use the small tool helper from the glovebox to lift it open, remove the old filter, and replace it with a new one. The arrow direction is crucial—it must align with the airflow. I recommend changing it every 12 months, especially if you drive frequently, to prevent dust buildup and avoid musty odors from the AC vents. The placement is quite user-friendly, requiring no professional tools and saving on mechanic costs. Keep the foot area clean to prevent faster filter clogging. Adjust the replacement frequency based on your driving environment—city driving with more dust may warrant checking every six months.
