Tradingpost has 0 Audi S4 Wagon cars for sale under $5,000 in Murray-Sunset, VIC. 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 Audi S4 always be sure to check out the wide range listed on Tradingpost!