Volkswagen has admitted that its 2016 vehicles contain more software which could help them beat emission controls tests.
The German auto giant has confirmed that the diesel vehicles are fitted with an "auxiliary emissions control device" which is different to the "defeat devices" which caused VW's share price to plunge by 40pc and cost the chief executive his job.
The company admitted last month that as many as 11m of its VW, Audi, SEAT and Skoda cars were fitted with defeat devices which detected when they were being tested and switched on full emissions controls so they could beat checks.
In normal use they were switched off, meaning they pumped out up to 40 times more nitrous oxide (Nox) pollution when driven on the roads.