The honest answer separates what the statute says from what the counter does, because the two are not the same and the difference is where the remedy lies.
What the statute requires
Section 50 of the Motor Vehicles Act, 1988 governs the transfer of ownership. For a vehicle registered within the same State, the transferor must report the fact of transfer within fourteen days of the transfer to the registering authority within whose jurisdiction the transfer is to be effected, and simultaneously send a copy of that report to the transferee. Where the vehicle is registered outside the State, the period is forty five days and the no objection certificate comes into play. The transferee must, within thirty days of the transfer, report the transfer to the registering authority in whose jurisdiction he resides or keeps the vehicle, and forward the certificate of registration with the prescribed fee and a copy of the transferor's report so that the transfer can be entered in the certificate of registration.
Section 48 deals with the no objection certificate. Sub-section (5) is the operative one for this question: before granting or refusing a no objection certificate, the registering authority shall obtain a report in writing from the police that no case relating to the theft of the vehicle has been reported or is pending, shall verify whether all the amounts due to Government including road tax in respect of that vehicle have been paid, and shall take into account such other factors as may be prescribed by the Central Government.
Under sub-section (3), the registering authority must, within thirty days of receiving the application, communicate in writing that it has granted or refused the certificate, and the proviso says it shall not refuse unless it has recorded the reasons in writing and communicated a copy to the applicant. Under sub-section (4), if within those thirty days the authority neither refuses nor communicates a refusal, it shall be deemed to have granted the certificate. A refusal that is oral, or a file that simply does not move, is not what the section contemplates.
Where the challan actually bites
Nothing in Section 48 or Section 50 says in terms that a pending challan bars a transfer. What happens is administrative. The department's record shows the pending entries against the registration number, and the file does not move until they are cleared. Whether an uncompounded challan is an amount due to Government within the meaning of Section 48(5) is arguable, since an uncompounded offence is an allegation awaiting compounding or trial rather than a crystallised due, and that argument is worth putting in writing where the entries are disputed. But the practical position is straightforward and there is no point pretending otherwise: expect the record to be checked, and deal with the entries before you advertise the vehicle rather than on the day the buyer arrives with a demand draft.
The order of work before a sale
- Pull the full pending list first, from the national eChallan portal and the Bengaluru Traffic Police site, by vehicle number and by licence number.
- Look at each photograph before paying. A payment made against a wrong entry can complicate correction. Valid compounding may also count as an earlier commission under Section 200(2).
- Object to the wrong entries through the official channel and keep the reference numbers. The grounds that succeed are set out in our note on disputing an e-challan in Bengaluru.
- Clear the road tax and any Government dues, because that limb is expressly in the section and it is the one a refusal is most safely founded on.
- Get the hypothecation cleared where the vehicle was financed. No entry regarding transfer of ownership of a vehicle held under a hire purchase, lease or hypothecation agreement may be made in the certificate of registration except with the written consent of the person named in it, and Section 51 sets out how the entry is cancelled on proof that the agreement has been terminated.
- Apply, and start the clock. Once the application is in, the thirty day period in Section 48(3) is running.
If you are refused
Ask for the refusal in writing with reasons, which the proviso to Section 48(3) requires. That single document changes the character of the dispute: it tells you which entries are being relied on, it lets you object to the ones that are wrong, and it is what any further application is built on. Where the thirty days have passed with no refusal communicated, say so in writing and rely on the deemed grant in sub-section (4).
The one thing that really does stop a sale
A vehicle that is physically in a police yard cannot be delivered, and no amount of paperwork changes that. If the vehicle has been seized, whether by the traffic police under Section 207 of the Act or in a criminal case, the release application comes first and the sale comes afterwards, and the routes and forums are set out in our note on getting a seized vehicle released in Karnataka. Selling on paper a vehicle you cannot hand over is how a transfer turns into a civil suit.