To find and disable it, you'll need to:
1. Turn on your car's infotainment system.
2. Access the settings menu. This is usually done by pressing a "Settings," "Menu," or a cogwheel icon on the touchscreen or a button on the console.
3. Look for audio settings. The relevant setting might be nested within a broader "Audio," "Sound," or "System" menu.
4. Search for options related to volume or speed. Look for terms like "Speed-Sensitive Volume," "Speed-Dependent Volume," "Audio Volume Compensation," "Driving Sound Adjustment," or similar phrasing.
5. Disable or adjust the setting. Once you find the correct setting, toggle it off, set it to "Low," "Off," or "0."
If you can't find it directly in the settings:
* Consult your owner's manual: This is the best source of information specific to your Mazda 6's model year and infotainment system. Search the index for terms related to speed-sensitive volume or audio settings.
* Check your Mazda's website: Mazda's website often has owner's manuals and support documents available for download.
* Contact a Mazda dealership: They can provide specific instructions for your vehicle.
Remember, the exact steps may differ depending on your Mazda 6's year and trim level. Thoroughly exploring the infotainment system's menus is key.