When your car is sold, your CTP Insurance transfers to the new owner, so there's no balance to be refunded.
Cover is subject to standard underwriting guidelines and policy terms. Limits apply. NRMA Insurance is issued by Insurance Australia Limited ABN 11 000 016 722 trading as NRMA Insurance.
This is general advice only so to see if this product is right for you, consider your own circumstances and the relevant Product Disclosure Statement (PDS)