Tradingpost has 0 Mercedes-Benz 300 Sedan cars for sale in Lockyer Waters, QLD. As Australia's favourite way to buy and sell for over 50 years, Tradingpost is the trusted way to sell your current car, and find your next car at a great price! When looking to buy or sell a Mercedes-Benz 300 always be sure to check out the wide range listed on Tradingpost!