No. A trade is always legally binding. If a car does not fully match its description, the parties normally negotiate a solution to the matter. This will typically entail a reduction in the price equivalent to the value of the error(s) in the description, with Autorola.com.au acting as independant arbitrator. In practise, a trade can only be cancelled if the car has been grossly mis-described - read more about the conditions for this in the auction terms and conditions.