Sound Design for EV Charging: UX Meets Safety

By James Hartley · October 6, 2026

The Silent Problem

Electric vehicles are nearly silent at low speeds. This creates a pedestrian safety risk that regulations worldwide now address through mandatory Acoustic Vehicle Alerting Systems (AVAS). Sound designers must create alerts that are both functional and brand-appropriate.

Regulatory Requirements

EU Regulation 540/2014 and US FMVSS 141 require EVs to emit sound below 30 km/h. The sound must be continuous, indicate vehicle speed through pitch or amplitude changes, and be audible to pedestrians without causing noise pollution.

Brand Identity Through Sound

Automakers use AVAS as a branding opportunity. BMW partnered with Hans Zimmer for their IconicSounds Electric program. Each brand develops a sonic signature that reflects their identity: sporty, luxurious, or futuristic.

Design Constraints

Frequency range: 300 Hz to 5 kHz for audibility
Maximum volume: 56-75 dB at 2 meters
Must be distinguishable from ICE vehicles
Should not startle or annoy pedestrians
Speed-correlated pitch or amplitude modulation required

Charging Station Sound

EV charging stations also need sound design. Audible feedback for connection confirmation, charging start, completion alerts, and error notifications. These sounds must be audible in noisy parking environments without adding to urban noise pollution.

The Future

Directional sound projection, personalized AVAS profiles, and context-aware sound systems that adjust volume based on ambient noise levels are the next frontier in EV sound design.