** Shares of British fast-fashion retailer Asos ASOS.L down 2.7% to 233 pence
** Co in talks with German customs authority over legal dispute relating to import duty underpayments on shipments crossing German border over several years
** Asos contesting assessments, estimates additional liability at about 0.5 million euros ($5,85,600) after reviewing more than 95% customs declarations under scrutiny
** Co considers maximum exposure to be immaterial
** As of last close, stock down 46.2% YTD
($1 = 0.8538 euros)
(Reporting by DhanushVignesh Babu in Bengaluru)
((DhanushVignesh.Babu@thomsonreuters.com))