Car speakers typically reproduce frequencies within the range of about 20 Hz to 20,000 Hz (20 kHz). This range includes most of the audible frequencies that the human ear is capable of hearing. Some car speakers may be able to reproduce frequencies outside of this range, but the majority of the sound that they produce will fall within this range.
Car speakers typically reproduce frequencies between 20Hz-20kHz, with most speakers designed to cover the range of about 20Hz-2.5kHz, as these are the frequencies most associated with vocals and musical instruments. However, some car speaker systems are designed to reproduce frequencies as low as 20Hz and as high as 20kHz.