At a glanceGenerally no — if your phone number isn’t needed for the thing you actually want, a showroom can’t make it the price of a quote or a walk-around. Under India’s DPDP Act your consent must be unconditional, so unrelated data can’t be bundled into a basic service. A number can be genuinely needed for some steps (a callback, booking a test drive), but “give us your number or we won’t talk” for a showroom visit is over-collection — and you can decline or give a secondary number.
Educational resource only. This explains your rights when a business makes your phone number a condition of service under India’s Digital Personal Data Protection Act, 2023 (DPDP Act); it is not formal legal advice.
The situation
You walk into a showroom to look at a car, or ask for an on-road price, and the first thing you’re told is that you’ll need to “just give a number” before anyone helps. Often it’s less about serving you and more about feeding a sales-and-marketing list you’ll hear from for months. Whether you actually have to hand it over is a fair question — and the answer usually isn’t the one the sales desk implies.
Can they make your number a condition?
Not when the number isn’t necessary for what you’re asking — your consent has to be unconditional. Your phone number is personal data, and the showroom collecting it is a Data Fiduciary. The DPDP Act says consent must be free, specific, informed, unconditional and unambiguous (Section 6), and it must give a clear notice of why it’s collecting (Section 5). “Unconditional” is the load-bearing word: a business can require what a service genuinely needs, but it can’t make an unrelated data demand a take-it-or-leave-it condition. Looking at a car or getting an indicative price doesn’t require your number, so refusing to help without it is over-collection dressed up as procedure.
When is your number actually needed?
Sometimes it genuinely is — the test is whether the specific step needs it, not whether sales wants it. There’s a real difference between necessary and convenient:
- Plausibly necessary: booking a test drive that needs a callback to confirm, or arranging a home visit or delivery where they must reach you.
- Not necessary: browsing the showroom, getting a price, or picking up a brochure — none of which require your number, and where a demand for it is about the marketing list.
So you’re not refusing all data collection — you’re asking that it match the task. Where a number truly is needed for a step you want, giving it is reasonable; where it isn’t, you can decline.
What they can’t do with it once they have it
A number given for one purpose can’t be quietly turned into a marketing channel — that’s a separate consent. If you share your number to arrange a test drive, using it afterwards to push offers, or passing it to dealers and finance partners, is a new purpose that needs your specific consent — not something buried in a form. And persistent marketing calls and texts run into India’s telecom rules too: you can register on the Do Not Disturb (DND) list and report unsolicited commercial communication. The DPDP purpose-limitation principle and the telecom DND regime both point the same way — data given for one thing isn’t a marketing licence.
How to handle the ask
Give what the step needs, decline the marketing, and keep a way to say no.
- Ask why it’s needed. “What do you need my number for?” If the answer is “our system requires it” rather than a real reason, it’s a marketing capture.
- Give the minimum, or a secondary number. For a genuine callback, a secondary or alternate number limits the spam exposure.
- Decline marketing consent. Any “keep me updated with offers” box should be separate and optional — you can leave it unticked.
- Say it in writing where you can. For a quote by email, you needn’t provide a phone number at all.
What you can do about it
Refuse the unnecessary, and escalate genuine over-collection or spam.
- Decline politely but firmly. A basic enquiry doesn’t require your number; you can ask for the price or brochure without it.
- Curb the calls. Register for DND and report unsolicited marketing calls and texts under the telecom rules.
- Escalate over-collection. If a business withholds a service purely because you won’t hand over an unnecessary number, raise a grievance with it, and you can complain to the Data Protection Board of India.
FAQ
Can a showroom legally refuse a quote without my phone number?
Not if the number isn’t needed to give a quote. Consent must be unconditional, so unrelated data can’t be made a condition of a basic service like a price enquiry.
But don’t they need it for a test drive?
Possibly — a callback to confirm a test drive is a plausible genuine use. The number can be necessary for that step; it still isn’t necessary just to browse or get a price.
They’ll only “register” me if I give a number. Is that allowed?
Registration for its marketing system isn’t a service you asked for. You can decline, and get the actual help — the price, the brochure — without joining a marketing list.
Can they use my number for marketing after I give it?
Only with your specific consent for that purpose. Using a number given for a callback to push offers is a new purpose — and you can also use DND to curb marketing calls.
How do I stop the spam calls that follow?
Register on the DND list and report unsolicited commercial communication under the telecom rules; you can also ask the business to delete your number.