One problem related to engine oil leaking has been reported for the 2006 Mazda MAZDA3. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2006 Mazda MAZDA3 based on all problems reported for the 2006 MAZDA3.
Upper passenger side engine shock mount on Mazda 3 at 37k miles. Shock mount tore leaking oil and causing vibration.