share: digg facebook twitter Toyota quarterly profit drops 18.5 percent to $1B Associated Press Copyright 2011 Associated Press. All rights reserved. This material may not be published, broadcast, rewritten or redistributed. Updated 11:13 p.m., Monday, November 7, 2011 TOKYO (AP) — Toyota said its quarterly profit slid 18.5 percent to 80.4 billion yen ($1 billion) on plunging sales caused by parts shortages from the tsunami disaster in northeastern Japan and warned it faces a new challenge from flooding in Thailand. Toyota Motor Corp.