One problem related to transmission not engage has 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 wife was driving our 2003 Mazda 6 with 56,000 miles to school on Thursday morning on a busy 2-lane highway. She shifted (likely to 4th), and the manual transmission locked-up. Fortunately, she is an experienced driver and was able to disengage the clutch and coast the car to the shoulder without incident. If she had been inexperienced, or if a shoulder had not been available, or if the car behind her had been closer, the outcome could have been tragic. Regarding, the transmission, it had been maintained with all of the recommended fluid changes, and it was locked-up and damaged beyond economical repair. A used transmission was installed by the local Mazda dealer at a cost of over $2,000.