The 2015 Audi Q7 uses two air filters: an engine air filter in the engine bay and a cabin air filter behind the glove box. Each serves a different purpose and has its own replacement routine.
Engine air filter location and replacement
Access to the engine air filter is in the engine compartment, in a rectangular black plastic housing connected to a large intake hose. The housing is typically located on the left (driver) side of the bay, near the front fender, and is secured with clips or screws.
- Open the hood and locate the engine air filter housing, identifiable by the large intake hose running into it.
- Release the clips or remove the screws that hold the housing lid, then lift the lid off.
- Pull out the old filter, noting the correct orientation and any arrows printed on the filter.
- Insert a new filter of the same specification, ensuring a snug seal and correct orientation.
- Reattach the housing lid and secure the clips or screws, then reconnect the intake hose.
Replacing the engine air filter is a straightforward maintenance task that can improve performance and fuel economy. If the car has run in extremely dusty conditions, check the filter more frequently and replace as needed.
Cabin air filter location and replacement
The cabin air filter is located behind the glove box on the passenger side. Access usually requires lowering or removing the glove box to expose a rectangular filter housing with a removable cover secured by clips or a few screws.
- Open the glove box and carefully flex the sides to release the stops so the box can drop down slightly or be moved aside.
- Look for an access panel or cover behind the glove box and remove the fasteners to expose the cabin filter housing.
- Take out the old cabin filter, noting the airflow direction indicated on the filter.
- Insert a new cabin filter with the arrows pointing toward the blower motor, then reattach the housing cover and any fasteners.
- Raise the glove box back into place and ensure it moves freely without obstruction.
Regular replacement of the cabin filter improves interior air quality and HVAC performance, especially in dusty environments or areas with high pollen counts. Check your owner’s manual for the recommended replacement interval and consider more frequent changes if you drive in poor air quality areas.
Notes and tips
Model variations (such as different engine options or trim levels) can slightly change the exact housing shape and access method. When in doubt, consult the owner’s manual or consult a qualified technician to avoid damaging clips or housings.
Summary
In a 2015 Audi Q7, the air filters consist of two parts: the engine air filter in the engine bay and the cabin air filter behind the glove box. Both are accessible with basic tools and follow steps similar to other Audi models: locate the housing, release the fasteners, replace the filter with the correct orientation, and reassemble. Regular replacement according to manual guidelines helps maintain engine performance and interior air quality.