Influential MPs have written to Volkswagen Group for answers over its diesel-emissions scandal, after criticising the firm for earlier responses.
Paul Willis, the brand’s UK boss, has appeared before several British parliamentary committees since September 2015 when the firm admitted to using software to cheat diesel-emissions tests in the U.S.
Some 1.2 million cars are affected by the scandal in the UK with fewer than half repaired so far, prompting anger from politicians and drivers who argue it is unfair that they have not received compensation offered to U.S. motorists.
Before the transport committee last month, Mr Willis was pressed on the nature of the remedy and whether Britain had been fully repaid by VW for the cost of retesting models and this week Chairwoman Louise Ellman asked him to respond to eight points including on whether the firm will look into every complaint that the fix had affected vehicle performance, an issue at the heart of attempts by some law firms to take legal action against the company.
“Please confirm that Volkswagen will investigate all existing and future cases where the customer is concerned that the fix has impaired the performance of their vehicle and that this investigation will be carried out free of charge,” Ellman wrote.
Previously, Mr Willis said he has been consistent and honest in his replies to the committee on a range of issues.
Meanwhile in Germany, prosecutors have opened an investigation against employees at Daimler.
The employees are being investigated over diesel-manipulation allegations, and are being probed for possible fraud and false advertising.