One problem related to engine knocking noise has been reported for the 2004 Suzuki Forenza. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2004 Suzuki Forenza based on all problems reported for the 2004 Forenza.
While driving 65 mph consmer heard a knocking noise coming from the engine. Also, it was hard to down shift the gears. Dealership was notifed, but did not resolve the problem.