A major lawsuit against five leading carmakers accused of cheating on emissions tests is set to begin at the High Court on Monday.
The trial is the latest chapter of what has become known as the "dieselgate" scandal, with the companies facing allegations they used software to allow their cars to reduce emissions of harmful gases under test conditions.
Lawyers say the case is the largest class action in English and Welsh legal history, and could eventually involve 1.6 million car owners.
The five carmakers - Mercedes, Ford, Peugeot/Citroën, Renault and Nissan - all deny the accusations.
The five have been chosen by the court as lead defendants to be tried first as the case is so big.
