I noticed a rattling sound that seemed to come from the rear passenger side wheel. I took it to a mechanic who told me that the rear sub-frame was so rusted that the damper had come loose from the sub-frame and caused the rattling sound. He said that he was unable to reattch the damper because the sub-frame was too rusted. The only solution was to remove the loose damper to eliminate the rattling sound and continue driving that way OR have the rear sub-frame replaced which would cost from $4,000-$6,000.

- Columubus, OH, USA

"What component or system failed or malfunctioned, and is it available for inspection upon request?" - Rear subframe. Total rust through due to improper steel alloy and insufficient paint. Same as happened for the front subframe. Front subframe was recalled as 2818I (Mazda's number) and 19V-323, 18V-631 (NHTSA numbers). NHTSA should also mandate rear subframe be recalled. "How was your safety or the safety of others put at risk"" - Total catastrophic structural failure of rear suspension. Would result in a total loss of control while driving. This would likely lead to a severe, possibly fatal accident at-speed. "Has the problem been reproduced or confirmed by a dealer or independent service center?" - As reported by independent service center. "Has the vehicle or component been inspected by the manufacturer, police, insurance representatives or others?" - no, this exact vehicle has not been inspected by manufacturer. Manufacturer is doubtless aware of the issue. A cursory google search leads to dozens of identical cases. "Were there any warning lamps, messages or other symptoms of the problem prior to the failure, and when did they first appear"" - there were no warnings of the failure prior to discovery by service center.

- Pittsburgh, PA, USA

I took my car to the mechanic for some routine maintenance and they called to tell me they discovered that the rear subframe is completely corroded. They say the car is not safe to drive, as it could come apart at any moment, and it will cost so much to repair (current estimate is $8000 and still climbing!) that it may be better for me to buy a new car (which I cannot afford). The mechanic expressed shock at how badly the subframe has deteriorated. He said it is in much worse shape than the rest of the car, which I have always maintained carefully. In 2019 my car was recalled for a defective front cross-member, which the dealer replaced. I was told at the time that it was recalled because the coating applied to it was defective and did not protect the part from corrosion. Based on my research, it seems that the same defective coating was applied to the rear subframe, and that it is why it has rusted so quickly and severely. I see that the NHTSA is already aware of this issue - [XXX]. The exact problem I am having is described in [XXX] : "Mazda6 owners told NHTSA there was severe corrosion of the right rear subframes that caused the steering rack mounting bolts to fail." It is completely unacceptable that Mazda replaced the defective part in the front but has not replaced the similarly defective part in the rear, which has failed for the same reason. I am furious that this has made my beloved car, which is otherwise in very good shape and runs beautifully, undriveable. Mazda should be required to repair this severe safety defect, which is entirely their responsibility! Thank you for your time. I look forward to hearing from you at your earliest convenience. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

- Malden, MA, USA

Purchased the vehicle, brought it to our mechanic. Was told that the rear subframe was completely rusted, making it unsafe to drive.

- Wallingford, CT, USA

Purchased the 2009 mazda6 for our daughter. Brought it to our mechanic for an electrical issue. We were told that the rear subframe was completely rusted and that the vehicle was unsafe to drive.

- Wallingford , CT, USA

the front crossmember rusted out and broke while driving down the road (per owner), all bolts needed replaced along with the rear engine torque strut mount. Confirmed and replaced by an independent shop 01/20/2024. upon inspection the rear crossmember, lower control arms, bolts, and other parts are all rusted and ready to break at anytime. front crossmember is at the shop for inspection. Car can easily be at shop on a lift for inspection. No warnings.

- Mansfield, OH, USA

Both my back and front chassis are completely rusted through and it-??s a complete screwed car. Looking online there is a recall on something like this but not for my model? All I see online is people talking about how they had to scrap their cars because of this issue. The salt and snow has ruined this car and so many people have complained to no avail.

- Greenville , OH, USA

The contact owns a 2009 Mazda Mazda6. The contact stated the vehicle was taken to an independent mechanic for the replacement of the headlights, and the mechanic discovered that the rear suspension was rusted and corroded while the vehicle was on the lift. Additionally, the passenger-??s side rear spring was detached. The mechanic advised the contact that the vehicle was unsafe to drive. The rear suspension needed to be replaced; however, the vehicle was not repaired. The manufacturer was notified of the failure and stated that the vehicle was not included in a rear suspension recall for corrosion and a case was not opened with the manufacturer. The approximate failure mileage was 138,000.

- North Attleboro, MA, USA

I brought my 2009 Mazda 6 to the dealership to inspect the suspension after the car began pulling to the right when braking. I was informed the front and rear subframes have failed on this car due to corrosion-?"even though the front subframe was serviced previously for the recall campaign with the addition of a support bracket. The front subframe will be replaced by Mazda due to the failed recall repair. However, Mazda will not cover the rear subframe at this time because it has not been recalled. The dealership recommends I do not drive the car until the rear subframe is replaced. However, the dealership quoted over $5,000 to replace it due to the high price of the subframe. There is a significant risk the lower control arms can separate from the vehicle due to corrosion, resulting in loss of vehicle control.

- West Chester, OH, USA

The REAR subframe has rusted out pretty much completely, but the total failure of the right rear spring mount has allowed the spring to punch through the frame, being stopped only by the top plate which has now turned sideways and is lodged between the spring and the floor pan. I understand this is a common problem with this and a few other model years, and has not been addressed by Mazda. I am hoping to help change this.

- Sunbury, OH, USA

* Drivers side (worst) and passenger side rear lower control arm. Both are available for inspection upon request. * The drivers side rear lower control arm rusted through and cracked near the point where it connects to the rear subframe. The right lower control arm did not yet visibly crack (it's still on the vehicle), but it is also severely rusted. If driven and either completely separated, loss of control as well as flying debris on the road would have been nearly certain. * I cannot drive the car to a dealer or service center. The problem is visibly obvious and online owners forums anecdotally indicate the problem is widespread. * The component is available for inspection. I have shown my mechanic and intend to take to a dealer. Because there was no accident or injury, thankfully, I have no cause for engaging police or insurance. * There was no warning/indicator in the vehicle. The first symptom of trouble was severe wear on the inside of the left rear tire. The vehicle then had a four-wheel alignment and suspension components were noted to be tight and adjusted into spec at that point. Some weeks later, we heard disturbing noises from the rear as we went over even small bumps in the road. We noticed the suspicious sound during a local drive and drove gently and directly home, so cannot say how much the partial break may have affected control at that point. Upon inspection, the rusted & cracked steel of the driver's side control arm was readily visible. Other notes: The rear subframe itself shows significant flaking and rust in comparison to the rest of the vehicle's undercarriage, but at least there appears to be more substance left to the metal of the subframe. Photos & measurements available upon request.

- Hudsonville, MI, USA

The rear sub frame on this vehicle was not painted and/or coated to properly withstand the corrosion that is caused by the salt used to treat the roads in the winter. This can cause serious issues.

- Fredericktown, PA, USA

There was a recall on the front subframe due to rust. The rear subframe has the same safety issue but there is no recall for that and there should

- Mansfield, MA, USA

The Rear Frame Suspension Cradle Subframe Crossmember has corroded and my mechanic at Jimmy's Tire and Auto in Granby Ct. says it is unsafe to drive. This corroded part is available for inspection while I wait for a used part to be delivered to complete the repair. No-one else has inspected the part. The condition was discovered when I had sent it in for general maintenance to replace the shocks and rear suspension linkages because there was noise in the rear when driving over bumps. The only warning I had was the odd noise when going over bumps in the road. I recall when buying the used vehicle many years ago that the dealer performed a recall on the front suspension #18V-631 and this shows closed.

- Tolland, CT, USA

Rear subframe corrosion/complete rot out, suspension complete rot out, and other components due to salt from the road and Mazda not correctly painting the components: 2009 Mazda 6I 2.5 Noticable drop in the back of the car. The tire wells are almost touching the rear tires. The rear tires are leaning inward, also putting inside ware on the new tires. The rear of the vehicle fishtails while driving. It takes bumps very hard. No suspension. When you hit a bump, the rest of the car is all over the road. Very dangerous driving conditions, as the fishtailing throws you into other lanes, possibly into other traffic. Took vehicle to Meinke on 3-15-23, was told and shown the damages to the rear suspension and rear subframe and other rear components. Vehicle is not safe to drive until fixed. Called Mazda dealer, was notified of recall on front subframe, but not the rear. Have appointment on 3-29-23 to drop off at Mazda dealer to get the front subframe serviced. My front subframe is not the issue, not that I know of yet anyways. My rear is the issue. Why was it not recalled with the front" Why are they allowed to risk the lives and safety of so many for not servicing the rear also" This needs to be recalled, and I am definitely going as far as I can into getting something done about this. I do not have the funds to pay out of pocket to get this fixed, or funds to go out and buy a new car. I am a mother of a toddler, and disabled. I'm hoping to get a class action lawsuit against Mazda for this, or at the VERY least, a recall to fix this issue also. I live in Indiana, we have some snowy winters, so salt is used on the roadways. I believe the car came from Ohio before I purchased it from Kentucky. I purchased the car on March 27, 2021. Have only had "normal" maintenance issues or water and tare before this, and actually love the vehicle! It has been a great vehicle, other then this issue.

- Jeffersonville, IN, USA

The rear subframe of my car is severely corroded. Both dampers (not sure if I have that name right, the cylinder inside the rear suspension coil) have rusted off. The rear left lateral control arm has rusted off. It is higher in mileage so it might be expected, except, other owners have reported the same problem with way less miles. Also there was a recall for the front crossmember in salt states for the same issue but nothing issued for the rear. Driving on a rusted subframe could potentially cause major components of the rear end to rust and break off while driving causing an accident. If the front was poorly coated and had potential for severe premature corrosion, the back should also be addressed as well. Had there been something earlier many owners would not be facing the risk of a potential hazard.

- Bridgeport, WV, USA

I own a 2009 mazda 6 witch is my only vehicle I had tooken it to a mechanic shop due to noise comming from the front and rear of the car under farther investigation I was notified by the mechanic that the entire front and rear subframes were badly rotted and rusty i than took the car to a mazda dealer for further inspection we-??re I was notified that they would replace the front sub frame under recall but I would still have to pay out of pocket for all the other suspension components long story short I was given an estimate of thousands n thousands of dollars that I could not afford and was told the car is unsafe to drive mainly due to the rear subframe and components bein severely rusted I would just like to know why there hasent been a recall for the rear subframe on this vehicle when there has been hundreds of other complaints about the same thing I-??m goin through about the same year make and model vehicle so now I am out of a vehicle due to it bein unsafe to drive that could cost me my job

- Kingsville, MD, USA

We purchased this car last year for our teenage daughter. It is making a terrible banging noise in the rear. We took it to a mechanic who stated the entire rear subframe is completely corroded, the bolts are rusted, and all the components need to be replaced. This is thousands of dollars if we can even find the parts. As the car is unsafe to drive, I'm not letting my daughter use it until we can get it resolved. After looking at all the complaints, this is a well known problem that Mazda needs to address. There was a recall for the front subframe, but not the rear. Current mileage on the vehicle is only 70,000. The rear subframes and suspension links are severely rusted and deteriorating rapidly, making this car unsafe to drive unless most (or all) the components are replaced and the metal subframes rust treated. Mazda should be made to recall this vehicle and fix this problem before someone is severely injured or killed in an accident due to their negligence. I would be interested in entering into a class action lawsuit for this vehicle as well if someone pursues it.

- Indianapolis, IN, USA

The contact owns a 2009 Mazda Mazda6. The contact stated that while driving the vehicle at an undisclosed speed, there was an abnormal squealing sound coming from the front of the vehicle while turning, also while depressing the brake pedal. The vehicle was taken to an independent mechanic who discovered corrosion and a hole on the front passenger-??s side suspension cross member. The vehicle was then towed to the local dealer who confirmed the diagnosis and informed the contact that the vehicle was previously repaired under NHTSA Campaign Number: 18V631000 (Suspension, Structure). The contact indicated that the vehicle had experienced the failure listed in the recall. The failure mileage was 85,600.

- Indianapolis, IN, USA

The entire rear subframe is completely corroded and rusted and caused the back right cross member to break. The entire rear subframe needs to be replaced including the control arms. This is unacceptable. Mazda had a recall for the front subframe, but not the rear which makes no sense as they were made with same materials. 2 separate mechanics have had the car in their possession and have both been unable to locate the parts in order to fix the problem. As a result, I am going to have to junk the car.

- Mohegan Lake, NY, USA