One problem related to catalytic convertor has been reported for the 2003 Mitsubishi Lancer. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2003 Mitsubishi Lancer based on all problems reported for the 2003 Lancer.
2003 Mitsubishi Lancer recall on the catalytic converter. Consumer states that the recall was never done but Mitsubishi states that it was fixed in June 2008. . Consumer was the owner at that time. A mechanic advised the consumer the catalytic converter needed to be replaced.