Which parts fail
Components named in complaints (automatic and manual transmissions, CVT, axles, driveshaft, 4WD/AWD).
Mileage when the problem started
Owner reports
Selected complaints filed with NHTSA by 2006 Mazda Mazda3 owners, lightly cleaned up (personal details are redacted by NHTSA).
During normal vehicle operation, without warning or indication, the vehicle master clutch cylinder plunger connecting from the clutch pedal to the master cylinder in the interior of the vehicle broke and disconnected the linkage between the clutch pedal and the clutch master cylinder thereby rendering the clutch system inoperable. This caused the inability to disengage the transmission from the drive gears and into neutral, which therefore caused the engine to stall once I safely braked to a stop. In my situation I was able to safely stop the vehicle, but this issue May cause a safety issue if I were at high speeds.
Typically but not only when travelling at high speed, the automatic transmission of my 2003 Mazda 3 shifts down from the 4th to the 3rd gear. This causes the car to jerk violently and the controls to illuminate including check engine, no traction and at. My mechanic could not find a cause of this, and he serviced the transmission by changing the filter and transmission fluid but the problem persists. He suggested that the transmission needs to be rebuilt. Has anyone experienced a similar issue and if so, did you figure out what caused it and how to fix it.
My car idles really rough. Once I get close to freeway speed my car constantly shifts gears from 3 to 4 to 3, so on. This causes my car to jerk, it revs from 3,000 to 1,000 and eveything in between. During this my brakes become practically useless, I have to completely press the brake pedal to make it decelerate. And braking distances are drastically increased. It further worries me that I dont have any dash lights on such as check engine, transmission, ABS, etc.
Tl* the contact owns a 2006 Mazda 3. While driving, the vehicle downshifted into third gear and the transmission indicator illuminated. The vehicle was taken to a dealer where it was diagnosed that the transmission needed to be replaced. The vehicle was repaired, but the failure recurred. The manufacturer was notified of the failure. The failure mileage was 163,000.
The engine was cold. I entered the car, started the engine, shifted into reverse and the engine accelerated uncontrollably, screaming. I could not stop the car with full braking and shut off engine. I restarted and it worked normally. This also happen about a year ago and the dealer could find nothing wrong. Help!!!!
Tl* the contact owns a 2006 Mazda 3. While driving at an unknown speed, the vehicle would shift independently into third gear. The failure occurred intermittently. The vehicle was not diagnosed or repaired. The manufacturer was not made aware of the failure. The failure mileage was 155,000.
While cruising on the freeway at 70mph, car downshifted into third gear causing the car to jolt and slow down. At and check engine light turned on. The car is not communicating with the transmission correctly causing it to downshift into 3rd randomly and also idle in 3rd. The entire shifting is random and dangerous, sometimes working and sometime throwing your rpms up to 6000. While driving it causes major safety issues when it randomly changed gears without warning. When plugged in I get error code u0101. The computer is failing and with recent google searches I realize this is a common problem but Mazda will not take any responsibility for me personally.
While driving in "manual" mode on my automatic transmission, and shifting from first to second gear, experienced substantial vibration in my steering wheel and vibration could also be felt throughout the entire car, as if the entire car were "wobbling". Drove straight home; had my car towed to the dealership, where it has been (as of today) for eleven (11) days. Service department advised me that they are calling it "internal axle failure" on the front driver's side. They are waiting for parts, which they say will take another few weeks to come in; the car is so new there aren't any avaliable parts for it?!?
As I was driving on the freeway in bumper-to-bumper traffic, traffic came to a standstill. I went to accelerate as the cars moved and then I realized my engine had shut off. The check engine light had come on and my car was dead. I put it in park, turned the key again and it started up again. But I noticed as I was crawling along, my car had a rough idle. The whole car would shake and RPM seemed a little lower than usual at idle. I found out my motor mount had gone. Dealer replaced it, had an extended warranty so it was covered. Gave out pretty quick if you ask me - at around 55,000 miles.
I have a 2006 Mazda 3i touring sedan . I was driving to pick up a cake for my anniversary when I parked the car got out got the cake and left the parking spot just a few feet down the road I heard some noise thought it was my engine under body plastic that protects the under part of my engine. Well went home took it off driven it around still the same noise grinding the dealer said transmission and 3others said powertrain problems I would love to know if it has a recall on the powertrain/ carrier and pinion because I would love to drive my car.
Transmission complaints in other Mazda3 years
Frequently asked questions
How common are transmission problems on the 2006 Mazda Mazda3?
NHTSA has 21 complaints about the transmission & drivetrain of the 2006 Mazda Mazda3, 13% of the model year's 166 complaints. The component named most often is automatic transmission (4 mentions).
Is there a recall for 2006 Mazda Mazda3 transmission problems?
No. NHTSA lists no transmission & drivetrain recall for the 2006 Mazda Mazda3, though it has 1 recall for other components. If the problem is widespread, a repair may still be covered by an extended warranty or a manufacturer service bulletin — ask a dealer.
At what mileage do 2006 Mazda Mazda3 transmission problems start?
Half of the complaints with a recorded mileage happened before about 95,000 miles, and 12% before 25,000 miles.
Is it dangerous?
Owners linked 1 crash, 0 fires and 0 injuries to transmission & drivetrain problems on this model year. If you notice symptoms, have the car checked before driving further.
Source: U.S. National Highway Traffic Safety Administration (NHTSA) — owner complaints through October 20, 2026, recalls and defect investigations; fuel economy from the EPA. Complaints are unverified reports and are not proof of a defect. How we rate model years.