Purchased 2004 Honda Accord Ex-V6 new due to internet reviews. 1st Honda ever purchased. Worst car I have ever owned for road noise. Dealer worked road noise problem, but unable to correct road noise problem. 40,000 miles on car, started hearing pecking/knocking noise in engine. Honda dealer informed me that noise was #6 piston? Honda dealer explanation of piston noise was engine block might have out of tolerance machining during manufacturing and would cost $1300.00 for an inspection to verify. A 2nd independent certified mechanic opinion confirmed engine noise as #6 piston & not uncommon in Hondas. Not pleased with Honda quality or Honda customer support. First & last Honda I will own!