Question: what is the best site for used car values?
Answer: www.theaa.com. Motorway. Consider Motorway the price comparison website of the used car world, as it pulls in data from the biggest car buying sites on the web, meaning you get the best price for your used car. ... 
www.motorway.co.uk. We Buy Any Car. ... 
www.webuyanycar.com. Auto Trader.