Four problems related to automatic transmission have been reported for the 2005 Mazda MAZDA6. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2005 Mazda MAZDA6 based on all problems reported for the 2005 MAZDA6.
2005 Mazda 6s 3 liter v6 with automatic transmission (aisin warner). Application of throttle to accelerate in 5th or 6th gear causes jerk, selects neutral then eventually selects an appropriate gear. Very dangerous on uphill freeways due to sudden loss of any power. Mazda has a service bulletin on this # 05-016/06 that proves this condition is not isolated.
The Mazda 6 jerks when shifting from 1st gear to second. Did this a couple times while in traffic almost causing an accident. It feels like the car is hesitant to shift and then shifts and jerks you forward when there are possibly other cars in front and you need to stop. I brought the car in multiple times to the dealer and they "could not replicate the problem".
The vehicle is equipped with an automatic transmission. When the vehicle was parked for over 8 hours outdoors in direct sunlight, the vehicle would not shift out of park. Failure occurs only on extremely hot days - temperatures over 95 degrees and only when all the windows & sunroof were completely closed. Vehicle was allowed to sit with the engine running and air conditioner on high for roughly 15-20 minutes. When interior temperature of car lowered, the car was able to shift out of park. The problem replicated sporadically but on at least 10 different occasions over the course of 2 years. The vehicle was brought to dealership on numerous occasions where they were unable to replicate the problem. During one service visit a mechanic cleaned the microswitch responsible for the shift interlock. That did not remediate the problem.
After a modest acceleration to pull into traffic, I had to stop suddenly due to a light and the car began to rev up to 1500 and back down over and over. I had to pull over immediately where it continued to rev and die down, regardless if I was in a gear or park. It is an automatic. I turned off the car and restarted, the problem went away but the engine light remained on for two days. I plan on taking to the dealer. It is only 7 months old, I bought it new.