Hi, I was caught in a problem with a private car sale. I advertised a car for sale privately and it was advertised as "no issues", but I have told the buyer the window doesn't work. The buyer did the test drive and negotiate the price with me. He then agreed to purchase the car. A week later, he told me the steering wheel has a problem and asked me another $300 to fix it. I then asked him why he didn't say anything when he did the test drive. He said he didn't think it was really bad that day and he agreed to purchase the car and drove away. But for me, I was not aware that the steering wheel had a problem and that it need $300 to get it fixed. I checked the NSW fair trading and it said the buyer should have the responsibility while checking the car and no warranty for private sale. So I'm not sure how I should handle the dispute under Australian Consumer Law. Am I liable to fix the steering wheel? Thanks in advance!