One problem related to manifold/header/muffler/tail pipe has been reported for the 2003 Honda Civic. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2003 Honda Civic based on all problems reported for the 2003 Civic.
The vehicle was smoking from the muffler, the engine light came on, and it felt like it was stalling. The manufacturer told the consumer to get a second opinion. The dealer maintained that no defects were found. The vehicle overheated.