The head of VW cars in the UK has apologised "unreservedly" for "significantly" letting down its customers in the diesel emissions scandal.
It comes days after the American boss of VW made a 'sincere apology' over the scandal which has affected more than 11 million cars worldwide.
The UK boss of Volkswagen has promised to "do the right thing" and "fully resolve" issues following the diesel emissions scandal.
Paul Willis told MPs at the environmental audit committee that the company wants customers to know that they "do care" and "really want to put these things right".
"Volkswagen is deeply sorry... we have fallen short of standards that are expected of us," he said.
"We are continuing to work carefully and diligently to remedy the affected engines.
"Since last weekend we've started to send personal letters to each and every affected customer. It is paramount our customers know we do care and we really want to put these things right.
"I promise with my dedicated team we will fully resolve this issue, do the right thing and regain trust in our brand."
Volvo withdrew an app comparing cars' emissions in 2011, after being told by that the data "could not be taken seriously".
Volkswagen's US boss has admitted he was told in spring last year of the emissions cheating affecting millions of the company's vehicles.
Volkswagen could start recalling cars containing emissions cheating software in January, according to the firm's new chief executive.