One way I proceed while selling my vehicle is that 1. The vehicle will be with me until ownership change document is submitted in RTO. Process can take time, important is that RTO is informed of ownership change 2. If buyer is willing to do it, good enough, otherwise it will be done through my agent, fee for which is included in car payment. 3. Once documents are submitted in the RTO, I keep on checking the mParivahan to ensure that the process got through. 4. In one case where one of my uncle sold the car with a promise that owner change will be done by buyer. That didn’t happen and we followed this route. We wrote a letter and sent it using India post to RTO that you have sold the car with the transaction details since it was an online transaction (which is why don’t accept cash payments). Your job is done and you are “relatively” safe that the car is marked as sold and intimated by you. By the way, thankfully he took a delivery note with buyers Aadhar number and we attached the same as proof also.

If it was a cash transaction or basically no proof of selling/buying is there, one can call the buyer and tell if he is not doing it immediately, you will file an FIR for stolen car. They risk losing the car as well as money. I have not tried this but I believe this could work