Two problems related to loud engine noise have been reported for the 2010 Mazda MAZDA3. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2010 Mazda MAZDA3 based on all problems reported for the 2010 MAZDA3.
Has I was driving my car home from work. Driving about 35mph I started to loose power and then the at, engine, tcs/dsc lights all came on. When I made it home I let it sit. While I looked into the issue on google later that evening I went back to see if my car was still having the issue. I placed the car in reverse and my car jumped/ jerked real hard. As I let go of the break I noticed my car didn't slowly move on its own like prior. I actually had to press the gas down quite a bit. My car revved up to 3 making a loud noise. The car had no power would hardly move. As I researched the problems and light issues it was kinda a surprise how easy it was to figure out what the issue was. Since this is a very very common issue found with the Mazda cars. So many people have this issue that when you order the part at over $600. 00 in the directions that is sent they actually recommend relocating the tcm to a different location using zipties. Went to have car codes read on my car informed the guy what I believed it to be and the most likely will be u0101 lost communication with tcm, and I was correct.
The Mazda dealer did not have the equipment to make the harness fix. I continued to drive my car and one day, my car had loud roaring sound. Within a couple days later, it began to emit white smoke from under hood and black smoke from tailpipe and begin to lose power on freeway off-ramp. I coasted to bottom of off ramp. Then I was able to restart it to move it to a nearby kaiser lot adjacent to exit ramp. From there, I had it towed home and have not driven it since.