Power Train Problems of Mazda CX-7 - part 2

I own a 2007 Mazda Cx-7, which I purchased in Nov. 2006, brand new. Over the past 2 years, I have heard a tapping noise coming from the engine compartment of the vehicle. Twice in the past 9 months, the vehicle lost complete power. I asked Mazda to check the vehicle and they stated that it was common, nothing to worry about. In January of 2012, I received a safety notice from Mazda in regards to a possible defect part, v. V. T. Component and a loose timing chain. I took my vehicle to the Mazda dealership, who advised me that my vehicle contained this defective part, but stated that they were not going to repair the defective component due to the lack of receipts for oil changes and other maintenance records. The reason for the lack of receipts is because my brother-in-law, who is a mechanic, performed the oil changes and other maintenance work to the vehicle. I asked Mazda if the defective part could be hazardous and they advised me it was not harzardous or dangerous. Approx. 3 weeks ago, my wife ordered the necessary parts and paid for them in full. After 3 weeks, I was advised that the parts or not available. After reading numerous websites and complaints from Cx-7 owners, this is happening across the country. I further read that if the v. V. T. Component fails while the vehicle is being operated, the engine will immediately cease, possibly causing the operator the inability to safely manveur the vehicle off the roadway. In my opinion, this is a danger to the occupants of the Mazda Cx-7 and other motorists. I have not heard of any accidents being reported as a result of the defective part, but I feel that Mazda is not taking the necessary measures to ensure the safety of the motorists. I feel that the matter should be taken care of by Mazda before someone is seriously hurt or killed.

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On 12/19/11, I was driving appx. 60 - 65 mph on I-81 when my 2007 Mazda Cx-7 just shut off. I was in the middle of traffic on the interstate, with a large tractor trailer behind me, but I was able to safely maneuver my car onto the shoulder of the interstate. My car would not start again. I did quite a bit of research on line regarding this particular issue and found a significant number of claims from other people that had this same problem happen to their 2007 Mazda cx7. The final diagnosis is total engine failure with a price tag of $7200 to fix. That would be for a whole new engine. I found a service bulletin from January of 2008 that corporate Mazda sent out to their dealers a problem with the timing chain. The bulletin specifically identifies a series of VIN#€™s affected, and mine falls into the category. There is currently about 65k miles on my car (I can€™t remember exactly), and I did not buy the extended warranty because who would think that a 2007 vehicle would need a new engine @ 65k miles? I think I should€™ve been notified that there was an ongoing issue with this particular model and year. Both Mazda and the dealership are telling me they will not do anything for me, because the vehicle is out of warranty. Mazda needs to take responsibility here. I'm lucky I was able to get my car through the traffic and off the interstate. Does someone need to be killed before this issue gets attention? my car showed absolutely no warning signs that something was wrong for me to pro-actively have this checked.

The power train (timing chain) failed in less than 4 years , 47,000 miles --one owner with regular maintenance done.

Purchased my vehicle 15 months ago at 38,000 miles. In October, I was driving along and the car stopped running. No warning, nothing on the dash lighting up, the vehicle just started loosing speed. The steering was going as well. I put the vehicle in neutral to try and get the steering back and it was a hard steer to the side of the road. I tried starting the vehicle and it would turn but not start. Two tows later, I find, to my surprise at 62,000, that I need a new engine. My timing chain either broke or has derailed. This all happened on October 22nd. It is now November 10th and I still do not have an exact diagnosis nor a vehicle. Yes, warranty is done at 60,000 miles, but what vehicles loose and engine at 62,000 in this decade? and, thankfully, I was not on a highway when this happened as I'm not sure what happened to the steering in this whole process.

The contact owns a 2011 Mazda Cx-7. The contact stated when he turned the vehicle on and shift into drive gear all five doors fail to lock unless he manually locked them. The failure was not diagnosed by a dealer or local mechanic. The vehicle was not repaired. The manufacturer was not notified of the failure. The approximate failure mileage was 4,200. Updated 1/16/cn the consumer stated when the vehicle was in drive, the doors would not lock automatically.

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There are two complaints for this vehicle. 1. Timing belt. . . Failure after 68,000 miles changed after a dispute with dealership, we still had to pay for 2 hrs of labor. 2. Turbo unit. . . Failure after 70,000 miles still at dealership. . . No option but to pay $3083 to get fixed. Turbo failure happened on highway, vehicle performed erratic and limped to off ramp using shoulder.

2007 grand touring Mazda Cx-7 has well known vvt issue causing oil to burn, in spite of regular oil changes and all recommended maintenance. We are original owners and know how car was maintained . Timing chain went at 62k miles, just out of warranty. After that service, drove 1k more miles and noticed loss of acceleration. Took car back to dealer, and they advised we needed a whole new engine, which they would not cover, aside from a 20% goodwill offset. Spouse wont let me operate car any longer in fear it will break down causing accident. Unsafe vehicle.

I have a 2007 Mazda cx7 that has a broken vvt timing system. The car is not drivable and the part is not available. The car currently has 74,000 miles on it. This is a know issue with Mazda and they are not taking responsibility. This is devastating as a consumer to not have the support of Mazda on a known defect with their vehicle. I am requesting that something be done so that Mazda takes responsibility for this defect and compensates Mazda cx7 owners for these expensive repairs!.

I own a 2007 Mazda cx7. Since I bought the car, at 29k miles I had to have the fuel tank replaced. At around 34k had to have the turbo looked at because of black smoke blowing on my bumper, Mazda replaced the pipes. My pipes were still smoking, had to take off work, take car in again because of black smoke, Mazda tried repacing rings in turbo, still blowin bluish white smoke, now getting turbo replaced. I had the air compressor replaced a about a month ago. Now I have a ticking noise coming from engine and I'm scared the timing chain will break soon. Mazda needs to replace the timing chains on these models. I think Mazda should do the right thing an recall this model, yr before someone gets hurt or breaks down in the middle of nowhere with kids in the car.

We have a 2007 Mazda Cx-7 with 67,000 miles on it. My wife was driving it on the highway, set the cruise control and moments later the engine died. Turns out the problem was caused by a timing chain on variable valve timing actuator failing and damaging the engine. We have read many other people that have had issue with the timing chain and vvt. Mazda is unwilling to assist us in replacing the damages. What upsets us most is my wife could have been injured or killed.

2007 Mazda cx7 began making a rattling noise at start-up. . . Noise would go away quickly and car, which has 27000 miles and has had no previous problem, ran great. Dealer says it's a "major issue", at least a bad timing chain, but says they will fix it under the 60,000 mile power train warranty. Saw on an edmonds web site that this seems to be a problem with this model of car and that most folks haven't been so lucky with Mazda.

My wife's 2007 cx7 was in a parking lot. My wife started it up, came to a stop sign and the car died without warning. It had 65,000 miles on it (5000 over the warranty) and wasn't even 3 years old. We had always gotten regular oil changes and had just had one the week before. We had it towed to the nearest Mazda dealer. The first time I talked to a service tech he mentioned the timing chain breaking. Later, they explained it as a valve (variable valve timing actuator?) failing and causing oil chain failure (jumping the gearing). My bill ($7500 - new engine) only states internal parts failure. They tried to indicate the oil was dirty even thought the oil was changed less than a week prior. After reading through many cx7 forums online it seems they were trying to build a case for engine sludge to cover themselves. Less than 2 months later replaced intake manifold shutter valve and had to flush and reseal brake lines. Went to kerry Mazda of ky to originally purchase a 2008 because of low finance deals. They shifted my attention to the 2007 (3500 miles) and I agreed because of the certified new (100,000 miles) program. When I found out I didn't have 100,000 mile coverage I went back to dealer and we pulled the paperwork and under the warranty it says certified and also remainder manufacturer's warranty. So it ends up they sold me a used car as new and I didn't even get the financing of a new car - very shady. Mazda corporate was of no help either, simply stating the car was out of warranty and there was nothing they could do. Needless to say I will never buy Mazda again. I will also make sure I don't trust what they say and make sure I read and understand every page even as they try and rush you through it. I fear someone will be killed when their cx7 suddenly stops on a busy highway. Hopefully, Mazda will address the problem before that happens.

My 2007 Cx-7 had been making a noise for a couple of weeks so I had it checked out by two different places and was told by both that the timing chain is about to break. It has 66k miles which seems low to be having this kind of problem. I will be taking it to the Mazda dealership but since I'm over the 60k my warranty has expired.

Our 2007 Cx-7 Mazda developed noise. We received letter from dealership regarding possible need to fix ac compressor. About 10 days later on sept. 5 2010 we took a trip and did not turn on the ac but a loud noise developed and we lost acceleration ability. No warning light ever came on. Our car has about 40,000 miles on it. Towed it to Mazda dealershilp. They said they couldn't tell what was wrong. Several days later they said the turbo had failed and the engine is ruined and would need replacing. They said that the engine had no oil (remember, no warning light) and they found sludge, indicating neglect. We have had oil changes as required. They have not agreed to fix it. We have found numerous other owners of same model and year online on edmunds. Com. It seems to be a problem for this particular model and year and the dealers response is to deny honoring warranty due to "sludge". Our next move is to take it to the dealership we purchased it from out of town.

Like tons of other reports online, my 2007 Cx-7 is having a timing chain/vvt actuator failure at around 40000miles. Luckily, after reading the reports online, I told my Mazda dealership about this problem and they are in the process of repairing while timing chain was at its breaking point (that would have resulted in a blown up engine while driving).

2007 cx7. Nothing but trouble since I bought it new in 07. I travel alot, so it does have 100k miles on it, but since day 1 it's been awful. Rear view mirror kept falling off, airbag indicator lights and check engine light stayed on constantly. Dealership had the car for 21 days trying to fix the electrical issues and the check engine light, 2 days later it came back on. Vvt and actuator were replaced and so was egr. Hard ticking noise in the engine at start-up as well as sitting idle - was told it was the timing assembly. Car was no longer under warranty, I called Mazda USA and complained, they finally agreed to eat the cost of the repair (this was at 75k miles) - but I had to pay almost $700 in labor charges. 20k miles later, the ticking noise is back. The check engine light stays on constantly and doesn't produce a read-out on the computer check. A/c not blowing the cold air that it used to either. Not to mention the numerous recalls that I was never notified of ~ had I not checked online for recall events, I'd have never known. There were at least 4 that affected my vehicle. I've sent numerous emails to Mazda USA requesting something be done - the entire car should have been recalled due to all the issues. Now at 100k miles and major mechanical issues, trading it in isn't even an option. No return emails & no return phone calls from Mazda. This is the 2nd Mazda I've owned - never again will I make such a foolish purchase. I'm a salesperson myself and can't believe Mazda will not stand behind their product. . . . . Especially one that costs $25k.

The timing chain is messed up on my 2007 Mazda Cx-7 it only has 85k miles on it.

Mazda 2007 Cx-7 engine seized. Heard a clicking sound for a few seconds at the start-up of the vehicle intermittently and would go away. This went on for a few weeks, but did not occur everytime the car started. Car seized at a traffic light and failed to operate normally, loud clanging noise followed by decrease in speed, could not get the vehicle past 15 mph. Car has 30,000 miles, called dealer since vehicle is still under warranty. Dealer indicates that engine and turbo need to be replaced and has contacted Mazda for warranty verification. No oil in car, and mechanic reports sludge in oil pan. Dealer requested receipts for all oil changes and parts since I performed all maintenance. I have no receipts. From reading the horror stories from similar individuals online with same problem, Mazda will more than likely decline my warranty and claim that I the owner did not properly maintain the vehicle. I have had several past problems with my vehicle since its purchase and have had warranty service work performed on numerous occasions. With all the times that my vehicle was in service, I was not notified of a Mazda service bulletin #01-002/08, which addresses certain VIN # 2007 Cx-7's (mine qualifies) to have a variable valve timing replaced due to numerous engine failures coinciding with the problem that I have experienced. The bulletin indicates that only customers who complain of engine noise will be treated with warranty replacement service. Since I had no inclining of the ongoing issues with the 2007 Cx-7, I am being penalized for having to pay for the engineering defects with the Mazda 2007 Cx-7.

7/6/10(25,000 miles) driving "piece of crap" from w-PA to phila after 1 1/2 hours in car airconditioning gets hot & loud noise starts. Able to pull off main highway &find a sears auto shop they say air compressor in my pice of crap (2007 cx7) has fallen apart - they don't do this work-I needed a Mazda dealership-they wouldn't recommend me driving home! it's a holiday (July 4th celebrated this day) I have no idea where a dealership is-I am over 200 miles from home - everything else is closed. Found a hotel to stay overnt & search for a dealership. Found 1 abt 20 miles away. Next day (praying the whole 20 miles) that piece of crap would make it to the shop. It did I explain situation to a non-caring, won't look me in the face mechanic who finally states (after 3 hour wait) my warranty expired 5 days prior & it would take 3 days to get part & fix. Here I am 200 miles away from home, in a not so racially diverse area of west PA- leaving for vaca the next day- & I can't get home!!! it was like pulling teeth to get a rental car # & a taxi cab # from these people. I was finally able to get home via 8 hour bus ride & go on much needed (after this ordeal) vaca, however I still had to pay over $800 & pick piece of crap back up. I complained to Mazda couple times &finally got letter that they were extending the warranty for air compressors to 60,000 so I got $ back, but not for the hotel stay, taxi ride to bus and bus ride home and back up there! couple other problems came up later -white smoke out of tail pipe after ideling, dealership couldn't find a problem, also saw something leaking, dealership couldn't find anything leaking--- 8/4/11 (31,000 miles) took piece of crap in for a noise it's making at start up. Vvt gone bad, but still under the powertrain warranty so got fixed. What's next??? I'm afraid to drive to far in this car!! can't take driving vacas-- gonna get rid of "piece of crap" prior to the warranties expiring in 2012! got to!!!.

My wife and I purchased a 2007 Mazda Cx-7 a few years ago, and over the last three months it has been in the shop with multiple problems. From an oil leak, to a bad compressor, then the timing chain gone bad and now another problem with the egr. The car has a little over 38k miles and to me it seems very odd for a car being this young in miles, to have major problems such as these. After going back and forth with the Mazda corporate office, they first agreed to pay for the parts for my latest problems since I'm now out of warranty. I was fine with that until I found out the labor was over $500 to fix this problem. When I call the corporate office to try to discuss splitting the labor costs, their supervisor contacted me back with an attitude like I did something wrong and decided they were now not going to help at all. That is just poor customer service behind a vehicle that was not ready to be put on our us roadways. In my opinion, this car should be recalled. . Read more...

As the proud owner of a new Mazda cx7, I felt confident after the first year of driving this SUV that it would carry me at least 10yrs. Until I begin to notice acceleration problems and noticing puffs of white smoke expelled from the exhaust pipe when it finally realized I was trying to increase speed. Took SUV to a Mazda dealer and was informed nothing was wrong with it. Fine, then began to hear like a rattling noise during acceleration (sounded like a rock in a tin can) sound then goes away after a few moments. Took to dealer again was told no problem. Well, on my way to work at 70 mph on busy interstate, I lose acceleration. Cost safely to the side of the road without being ran over by 18 wheeler,, had vehicle towed to Mazda dealer. I was then informed the timing chain broke, yes at 70,000 miles. Only then to be informed later that due to timing breaking my engine was ruined. I was then devastated, even more so after I was told it would 8000 for a new engine plus 2000 for labor. I had no other option but to park the vehicle and attempted to save money to have it fixed. Well that was 2 yrs ago and its still parked, and 2 yrs now without a vehicle. I had routine documented oil changes at Mazda dealers only, I took very good care of this truck. After searching the internet, I am reading the same incidents from thousands of people concerning the exact same issue. Mazda has finally states that there is a problem with the timing chains and has issued an extended warranty on it. But from reading reports, Mazda is giving people a hard time. Mazda cx7 are dangerous vehicles, someone could have been killed due to this poorly made SUV. I am reporting this because it really needs to be looked into before someone is killed to many people on the internet complaining about this failure. Please investigate this vehicle< we cant all be wrong!!!!!!!!!!!!!!!!!!!!!!!.

Timing valve replaced at 34,951 miles, then engine replaced at 41,060 miles on July 24, 2008.

I have a 2007 Mazda Cx-7. It is a very beautiful car but also has tons of problems. At 15000 miles it was leaking oil and they replace the engine gaskets. Then later was also leaking oil. Was told by the dealer that it was not. Took it to someone else who said it was leaking from the timing chain. Mazda resealed it. Since then my car doesn't shift properly going up and down hills. My air conditioner is hot and makes a funny sound. My car has loss of power and sound like a diesel. Overall I think that Mazda needs to step up and take care of the problems or they will not get many returning customers! something needs to be done! it was a 35000 dollar car!.

I purchased a brand new 2007 Mazda Cx-7 in April 2007, the vehicle started experiencing engine problems in September 2007, I was told it may have something to do with the vvt (variable valve timing) and timing chain. The vvt was replaced by the dealership a short time later; however, not the timing chain. After the vvt was replaced my vehicle starting to experience thick white smoke coming out of the tail pipes. My dealership technician advised this was due to a turbo issue with the engine. All of this occurred within the first couple years of my ownership. I have had the turbo repaired (out of pocket expense), as well as the vvt (2 times) and the timing chain it all seems to no avial. The car is revving very high on cold start ups and is now experiencing a code as of the last couple of days that is stating there is a decarbonization issue with the engine that is linked to the timing chain. Of course this is now the 5th time this vehicle engine will be opened up to diagnose one of the known issues that Mazda north America is aware of. I have had this vehicle since 2007, and has just over 120,000 miles on it. I have maintained a very good service history on the vehicle taking it to "reliable" Mazda dealerships in the area where I live. My main concern is Mazda is doing nothing to rectify the issue and it's only a matter of time before someone is seriously hurt or even worse. The vehicle safety is impaired due to unstable engine performance. There is obvious technical issues with the engines for this Mazda engine model.