Four problems related to engine exhaust system have been reported for the 1996 Mazda 626. The most recently reported issues are listed below.
No summary.
Air intake system failed.
None of the first three problems were causing any safety hazards. The transmission failure made the shifting very jerky and rpm to go high. I did not try to experiment on this on the highway. Driving a Mazda is the worst experience of my life. Never buy/lease or rent a Mazda again.
Oil pressure switch broke, causing the oil to discharge into the exhaust, resulting in a potential saftey hazard.