Four problems related to catalytic convertor have been reported for the 2003 Mazda MAZDA6. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2003 Mazda MAZDA6 based on all problems reported for the 2003 MAZDA6.
My car has been giving off a rotten egg odo for 8 months now since I have purchased ths vehicle. Everyone who rides in my car including myself get physically sick due to the smell.
Sulfur odor coming from car. I contacted the dealership within the first few months of ownership and they said it was because of the gasoline being used and it would eventually go away. Well, now there is 26,000 miles on the vehicle and the smell is still evident, if not even worse.
Rotten egg smell from exaust. Dealer showed me Mazda's service bulliten which states it comes from higher sulfer gas, and will dissipate by 10,000 miles. Now have almost 8,000 miles with no lessening of smell regardless of gas used. (slight improvement with amoco) someone inky had newer catlysts installed by Mazda with good results. This should be done across the board for anyone with this problem.
Sulfur (rotten egg) smell in vehicle cabin. Dealer said no fix from Mazda related to exhaust issue, several complaints, issue lasts up to 8k miles. Car has less than 800 miles.