** Shares of Bapcor BAP.AX fall as much as 31.1% to A$3.51, their lowest level since March 26, 2020

** The auto parts provider flags that its second-half trading performance was below expectations, with weak sales results during May and June

** Posts 1.4% decrease in total unaudited revenue of A$1,944.3 million ($1.28 billion) for the full year

** Co says performance affected due to disruptions in Specialist Wholesale segment, NZ macroeconomic landscape and supply issues

** Co currently top pct loser on the S&P/ASX 200 .AXJO index, which is flat

** YTD, shares down 19.1%

($1 = 1.5156 Australian dollars)

(Reporting by Nichiket Sunil in Bengaluru)

((Nichiket.Sunil@thomsonreuters.com))