I wasn’t aware that my car purchase was a distance sale. Should the seller have told me when the vehicle was delivered, and does this affect my rights?

Yes, the Regulations say exactly what information should have been provided to you by the seller. If you haven’t been given information about your rights in relation to a distance sale at the point of delivery, including your right to cancel the purchase within 14 days, then you may have up to a year to cancel your order for the vehicle and receive a refund.