Martin Lewis wants people to check their old paperwork or risk missing out on more than £800. He spoke about the widespread issue on his BBC podcast , warning that people won't realise they're entitled to compensation. Millions are believed to be due payouts after being mis-sold car finance agreements in the past. According to the Financial Conduct Authority (FCA), those affected could receive an average of £829 each, with 12.1 million deals mis-sold . The issue concerns loans taken out to buy