can i sell my car without rego papers nsw

Yes—you can sell a car in NSW without the rego papers; that flimsy certificate isn’t proof of ownership anyway.

What matters is a proper receipt with the VIN, engine number, sale price, date, and both parties’ names, addresses and licence numbers, plus you (the seller) lodging a Notice of Disposal with Service NSW promptly so the fines stop following you home.

If it’s still registered, the buyer has 14 days to transfer it and pay the transfer fee and stamp duty; no rego slip required, just the details.

If it’s unregistered or you’re not transferring rego, hand the plates back and cancel the rego; the buyer will need a blue slip (AUVIS) and a green slip (CTP) to re-register, plus stamp duty.

Do everyone a favour: clear any finance and get the buyer to run a PPSR check—because surprises are for birthdays, not cars.