My EV Makes A Humming Sound At Low Speed, What Does It Mean?

If you have recently purchased an electric vehicle (EV) and wondered why your car makes asoft humming sound when driving at low speeds, then you might be surprised to know that it is actually a safety system at work and part of the EV's Acoustic Vehicles Alerting System (AVAS).

The AVAS system in electric vehicles (EVs) plays a crucial role in enhancing safety by providing audible alerts to pedestrians and other road users. As electric vehicles operate quietly, the need for such an audio alert has become increasingly important to prevent accidents, particularly in urban environments where pedestrian density is high.

The AVAS system emits sounds when the vehicle is moving at low speeds, typically below 20 km/h. This sound is designed to alert individuals

nearby, ensuring they are aware of the vehicle's presence, without alarming them. Such measures align with global safety regulations that mandate the inclusion of AVAS in electric vehicles to promote safety and awareness. Every EV maker adds a distinct audio to their models, including mainstream automakers such as Tata Motors.

It is not only fully electric vehicles that feature an AVAS system, even strong hybrid cars, such as the Maruti Suzuki Grand Vitara, have an AVAS alert that emits a low-frequency sound to alert pedestrians when driving in electric mode at slow speeds. Similarly, EV makers are also known to incorporate audio signatures inside the cabin, which increase in volume in correlation with the EV's acceleration or deceleration. These systems allow the driver's senses to be in better alignment with the EV to ensure a safer driving experience. High-end brands such as BMW have even collaborated with renowned composers such as Hans Zimmer, to develop unique sound signatures for customers of their electric cars.

Also Read: I Want To Buy An EV From A Trusted Brand - What Are My Options In February 2026?

The introduction of AVAS is not just a regulatory requirement but a significant step towards ensuring that electric vehicles are safer for all road users. By enhancing the auditory presence of EVs, the AVAS system contributes to a more inclusive environment for pedestrians, cyclists, and those with visual impairments. As electric vehicles become more prevalent, continued focus on safety measures like AVAS will be critical in supporting their integration into everyday life.