We bought a car from gumtree and it was advertised as a 2008. We met the seller at the bank and had done a bank transfer.He then produced the registration papers. We noticed the model was a 2007 model. When we asked him to explain, he stated that was the year her registered it. He made no attempt to explain it was a honest mistake and renegotiate. The ad shows 2008 in bold letters and this plays a very important part in considering the price and purchase of a car. Is there anything we can do, and is this considered as misleading advertising under Australian Consumer Law?