One problem related to transmission gear slipping has been reported for the 2007 Mazda MAZDA3. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2007 Mazda MAZDA3 based on all problems reported for the 2007 MAZDA3.
The contact owns a 2007 Mazda 3. Whenever the transmission was in 3rd gear it slips into neutral, which makes the vehicle drift backwards. Also when driving up a hill the vehicle will slip into neutral instead of third gear. He was in the process of taking the vehicle to the dealer. The failure mileage was 80,000.