Silent EVs No More: What the New AVAS Rule Actually Means for Your Next Car

Viral posts say every electric vehicle must play fake engine sounds from today. The law taking effect on October 1, 2026 is narrower. It covers only electrified passenger and goods vehicles in M and N categories. If you’re buying or managing EVs, here’s what actually changes.

Acoustic Vehicle Alerting System adds a speed‑linked warning sound for quiet electrified vehicles. From today, only new M and N models need it; two‑wheelers and three‑wheelers do not. AIS‑173 defines the audibility test and limits, avoiding improvised speakers. Combustion‑engine vehicles are unaffected.

What the AVAS rule really changes from October 1, 2026

From today, agencies will not approve any new electrified M or N model without AVAS. Existing models must add it for vehicles manufactured on or after October 1, 2027. There is no blanket retrofit for vehicles already sold. Verify compliance on purchase documents, especially Form 22.

AVAS rule coverage: M and N categories, not two‑wheelers or e‑rickshaws

Only electrified passenger vehicles (category M) and goods vehicles (category N) are covered. L‑category vehicles, including two‑wheelers, three‑wheelers, e‑rickshaws and e‑carts, are not covered today. The mandate is expressly limited to M and N electrified vehicles.

City noise and AVAS sound levels: what buyers will hear

AVAS is meant to be audible, not annoying. AIS‑173 sets minimum audibility and a 75 dB(A) cap at low speeds. The sound must vary with speed, and reverse uses a distinct tone.

AVAS penalties, PUC, fitness and checks: how compliance is enforced

Compliance is checked at type approval under Rule 126, and during registration and fitness. PUC tests emissions only; AVAS is not evaluated there. Manufacturers face Section 182A penalties for selling non‑compliant vehicles. Avoid unlawful retrofits or disabling AVAS.

Buyer and fleet checklist for AVAS compliance

Bottom line for students, families and first‑time buyers: from October 1, 2026, only electrified M and N vehicles need AVAS; older model lines switch by October 1, 2027. Use verified paperwork, skip aftermarket gimmicks, and follow the checklist to make confident, well‑timed EV choices.