Audi halts diesel A6 and A7 deliveries due to software 'irregularities'
German authorities to quiz firm on possible use of 'illegal defeat device' in seventh generation versions of the A6 an...
German authorities to quiz firm on possible use of 'illegal defeat device' in seventh generation versions of the A6 an...
Mercedes cars to account for most of affected models; brand says service action is to “strengthen confidence”.