Core Point - Major car manufacturers are facing a significant trial in London's High Court, with 1.6 million claimants accusing them of cheating diesel emissions tests, reminiscent of the Volkswagen 'dieselgate' scandal from a decade ago [1] Group 1 - The trial involves some of the world's largest carmakers, indicating a widespread issue within the automotive industry regarding emissions testing [1] - The case highlights ongoing legal repercussions and scrutiny in the automotive sector following past scandals, particularly the Volkswagen emissions scandal [1] - The number of claimants, totaling 1.6 million, underscores the scale of the allegations and potential impact on the industry [1]