Toyota could end up paying more than $2 billion to customers as part of an Australian class action that challenged the auto giant over faulty diesel particulate filters in some of its top-selling cars. In a Federal Court judgement handed down last week, Justice Michael Lee found Toyota customers purchased vehicles with defects and as a result, the value of their cars was reduced by 17.5 per cent on the average retail price, or more than $7,000 per car. Balance Legal Capital is funding the claim.