While driving the car will suddenly jerk as if braking quickly, the check engine light and the at (auto-transmission) light will illuminate on the dashboard. The car will then jump down to 3rd or 4th gear, disallowing it to shift properly. It will remain stuck on the lower gear with the warning lights on until the car is turned off and turned back on. A few times, in conjunction with the aforementioned problem, the car has also lost power steering. This happens on the freeway and has almost caused accidents a few different times. I have taken this to several mechanics and not a single one has been able to diagnose or resolve the issue. The output shaft speed sensor has been replaced, so this is not the issue. There is no predicting when it will happen as it seems to completely random. It has happened on the freeway while going 70 and through neighborhoods when only going 25. It's impossible to predict or give a precursor to what happened immediately prior to the car jumping gears and losing power steering. This is so dangerous.

- West Jordan, UT, USA

Car randomly loses power, loss of steering and the steering wheel light blinks. It gets hard to control and the car will shut off. No matter where or what the conditions.

- Cleveland, OH, USA

Nearly every time while driving, a yellow "at" sign will appear as the gear will jump from whatever it is to 3, causing a sudden, sharp jerk (as if one suddenly braked), before going back to whatever gear it was in. This has occured many times one instance at a time, but several times 3-8 times in rapid succession. Also, at times the gear # indicator will flicker and disappear while jumping through different numbers, also causing the traction and at warning lights to appear. During this time, the car will suddenly jerk, slow, and shift unpredictably. The car can also go into "limp mode", in which the gear gets stuck in 3rd for a period of time (usually 2 minutes to until restarting the car). All of these are extremely dangerous for the driver and drivers around them, as the car may suddenly stop or speed up with zero warning to anyone.

- Atlanta, GA, USA

The contact owns a 2007 Mazda 3. while driving various speeds, the transmission control module failed and the vehicle began jerking and shaking. Also, when the gears were shifted, the vehicle jerked violently. In addition, the "check engine" and "automatic transmission" indicators illuminated. Wilson automotive in orange county, California was made aware of the failure and stated that the warranty on the vehicle had expired. The vehicle was not diagnosed or repaired. The manufacturer was made aware of the failure. The failure mileage was approximately 2,400.

- Paris, CA, USA

The steering wheel seems to have lost all power steering capabilities, very scary! makes it extremely dangerous when attempting turns! noticed it luckily as I was pulling out of a large parking lot. Trying to remedy the situation so I can use a car that isn't an accident waiting to happen.

- Hillsborough, NJ, USA

The transmission began taking severe and erratic shifts when going uphill when my Mazda reached 70,000 miles. These shifts are so severe that the first time it happened I thought a tire had blown out. It occurred on a high mountain pass that has no siderails and many fatalities have occurred simply from weather conditions. When we contacted Mazda customer service, they admitted that a defective part was in the transmission from the original purchase of the car. The part, in fact, is no longer manufactured because it has been rendered defective. Mazda told us over the course of several months and hours of putting us on hold and several more thousand miles put on the car that the only thing we could do is replace the entire transmission because it was no longer under warranty. Why is this not a safety issue and therefore a recall? Mazda customer service promised to review the case and our multiple phone calls, never got back with us, and refused to see that it is a safety issue. They will do nothing to repair the transmission because of their faulty manufacturing. We still continue to go over this pass, now in snowy and icy conditions with a baby in the backseat and no idea when the transmission will go out. Unfortunately until someone is seriously injured or dies Mazda won't take this issue seriously. I have lost all faith in Mazda's quality of assurance or concern for customer safety and will not be purchasing another Mazda in the future.

- Gunnison, CO, USA

Automatic 5 spd shifts harshly between 3rd and 4th gear. Jerking the car when it happens.

- Lebanon, NH, USA

In March of 2014, while driving, the transmission popped out of gear and would only go from 2nd to 3rd gear (check engine and at light immediately came on). I brought it to my mechanic and they determined it was a failure of the solenoid a /transmission module...cost me $1500. Then, 9 months later, the same thing happened. This time the mechanic said it was now the wire harness that was defective and had to repair shorted wires...cost me $500. Then, 3 months later, the same thing happened. This time I brought car directly to local Mazda dealer. I asked about recall, and they said no recall! so this time I was told solenoid B had failed and I needed a new transmission...cost me $1800. A week later, it did the same thing!!! I brought back to dealer and they said wires just needed tightening. A week later, my car wouldn't start...needed a new starter, belts, and battery...cost me $1100. This is clearly a Mazda defect and I should get my money refunded!!!

- Levittown, NY, USA

I have been having issues with this vehicle ever since I purchased it from a dealership in woodbridge, va. The car's gears does not shift correctly and the engine continuously stalls. If I'm at a traffic light and the light switches from red to green the vehicle jumps as if it's going to cut off. My at light also came on and my check engine light comes on and off. Every time the vehicle's engine light is checked, it's because of "the thermostat" which I've seen many complaints from owners of the same type of vehicle. Although, the engine code is coming up as an issue with the thermostat, there's actually never an issue. I searched my VIN and its stating there are no open recalls for my vehicle, but I'm having the same issues as the open recalls for this particular make and model for 2007. I bought the vehicle October 2013 so there's no way Mazda could've sent me information pertaining to the recall and the dealership did not inform me of this either.

- Brandywine, MD, USA

Vehicle was traveling along on 30 mph road with 'stop' sign ahead. As vehicle slowed down to about 15 mph, transmission started to shake, several warning lights came on and off, including oil and power steering, RPM fell very close to 0 (zero) and car died. Vehicle was able to stop at the 'stop' sign. Even though the vehicle was still on, any pressure on the gas pedal did not provide power or input to the transmission, now in 1st gear, to move the car. Car needed to be completely turned off and then turned on before it could move again. This issue has been ongoing for 4 years regardless of speed. The car has also decided to stop providing power while in motion while in moving traffic or on the highway, which could have resulted in multiple car crashes or worse. Mazda refuses to acknowledge that anything is wrong with the car since they "cannot replicate the problem". this issue is sporadic and occurs regardless of speed (usually around 30 mpg or less), weather, distance traveled, amount of time car has been in consistent use, etc. Mazda has even hooked this car up to their computer system and no error code has been found. This issue has been extensively documented with our local Mazda dealer and paperwork is available for review. This car has been a true lemon since we bought it. It only has roughly 55K miles on it.

- Middle Village, NY, USA

While trying to accelerate form a stop my car stalled. The engine shut off but the radio and all indicator lights were on the dash. I had to put the car into park and turn the key to the off position and restart the engine. My car is an automatic transmission and has done this multiple times all at similar speeds. Going from a complete stop or from idling speed trying to accelerate.

- Downey, CA, USA

Buenas noches! lamentablemente no hablo ingles, pero quisiera obtener informacion acerca de la falla de fabricacion en el sistema hidraulico (ehpas) del Mazda 3 del 2007. Tengo uno Y presneto una falla donde el volante SE puso muy duro, Y en venezuela aun no han hecho el recalls. Ademas quisiera saber si han hecho alguna investigacion del generic electronic module, que controla el funcionamiento de: Los limpia para brisas, las luces, el sistema de doble transmision, espejos retrovisores, sistema de control de las ventanas, Y otros. Mi vehiculo tambien presento fallas de ese tipo Y creo que ES una falla de fabricacion de ese modulo (GEM) si tienen alguna experiencia O quejas de los usuarios, podria por favor enviarme esa informacion.

- Valencia, 00, USA