Engine Exhaust System Problems of Mazda CX-7

The exhaust from this car is horrible. Causing breathing issues.

See all problems of the 2009 Mazda CX-7 🔎.

I write to express my disappointment at the quality of vehicles Mazda is putting out, and the lack of response Mazda's customer service department offers its customers. In 2008 I bought a 2008 Mazda cx7 and this car has given me nothing but problems. From the faulty wiring that always blows out the headlights, to the power windows which sometimes turn off and turn on, to the exhaust fumes that can be smelt inside the car, I’ve complained about all of it and spent countless resources and time trying to fix it all. The last straw came about a month ago when I was informed that my vvt adjuster and chain were out, the turbo was out and the engine was failing and it would cost me close to $4,000 to repair it. We’re talking about a car with only 75,000 miles. According to my mechanic and according to edmunds. Com reviews these are all common Cx-7 problems and Mazda just won't own up to them.

See all problems of the 2008 Mazda CX-7 🔎.

Tl- the contact owns a 2007 Mazda Cx-7. The contact stated that while driving at various speeds, the vehicle started to make a whinnying noise before the check engine lamp illuminated. The contact mentioned that white smoke started to emitted from the exhaust. The vehicle was taken to the dealer. The technician diagnosed that the turbo charger was defective and needed to be replaced. The manufacturer was made aware of the failure. The vehicle was not repaired. The failure and current mileage was 62,839. Pm.

See all problems of the 2007 Mazda CX-7 🔎.

The contact owns a 2007 Mazda Cx-7. The contact stated that the variable valve timing (vvt) burned out and caused smoke to emit from the exhaust pipes. The contact took the vehicle to a dealer for a diagnostic test. The dealer stated that the vvt valve timing chain was defective and replaced the vvt valve timing chain. The contact stated that the vvt valve timing chain was replaced four times prior to the recent failure. The failure mileage was 70,000.

The contact owns a 2008 Mazda Cx-7. While driving approximately 40 mph, the contact heard a loud grinding noise outside of the vehicle and blue smoke emitted from the exhaust pipe. The vehicle was taken to an authorized dealer who stated the failure was contributed to engine sludge. The technician advised that the engine be replaced. The vehicle had not been repaired. The manufacturer was not notified of the problem. The approximate failure mileage was 50,835. The VIN was unavailable.

The turbo made a loud whining noise when the accelerator was pushed and you could not accelerate. Alot of white smoke was flowing from the exhaust. We immediately pulled over on our way home from out of town and called aaa to tow the car back to the service dealer in parkersburg wv. The vehicle only has approx. 19,000 miles on it with service records showing proper oil changes. The vehicle is under warranty and Mazda sounds like they don't want to cover this problem.

See all problems of the 2010 Mazda CX-7 🔎.

This Mazda Cx-7 is at a Mazda dealer's service center right now getting the timing chain replaced, vvt issue corrected, a new turbo system to keep it from dumping tons of blue smoke from the exhaust, a/c system fixed, and there is an intermittent electrical issue as well. Not happy obviously, as these are all know issues with the vehicle. Mazda has agreed to pay for the timing chain, but the rest comes out of my pocket.

I have a 2008 Cx-7 with a failed egr valve. They refuse to cover this part under my power-train warranty even though this is clearly an emissions failure. I have been doing some research on the environmental protection agency's website and it is my understanding that the vehicle manufacturers are required to design and build their vehicles to meet emission standards for the useful life of the vehicle specified by law. Under section 207 of the clean air act, if epa determines that a substantial number of vehicles in a class or category do not meet emission standards in actual use even though they are properly maintained and used, epa can require the manufacturer to recall and fix the affected vehicles. My car has less then 30,000 mile on it and the erg valve should not have gone out already. I should not have to pay $712 to replace a part that does not meet emission standards set forth by California. It is not just my vehicle having this problem, the more research I do the more I realize that this an on going problem with multiple Mazda consumers.

Purchased a used 2007 Cx-7 with 31,000 miles (still under warranty, allegedly). Drove it for four months to the day, 34,000 miles on it now. White smoke, knocking engine. Mazda requests past oil changes which I have one. Mazda presents me with a $4,100 estimate to fix replace the turbo, engine repair and timing chain. Notice that in January of 2008, Mazda north american operations put out a service bulletin no. 01-002/08 describing this exact problem. However the bulletin clearly states "only to verified customer complaints on vehicles eligible for warranty repair. " great! it can be fixed, Mazda says so! OH, what? not so fast. Mazda tech says there is a sludging problem therefore voiding the warranty. But the service bulletin says it can be fixed due to my complaint. After further research I discover that the turbo system in this car has an engineering problem causing way! to much heat for normal use, therefore burning oil, therefore causing sludge. Mazda uses this "evidence of sludge" caused by them! to claim that the owner did not maintain their vehicle, therefore "your warranty has been voided. " Mazda is trying to avoid a recall on this for obvious costly reasons. I have contacted an attorney and he is currently working on my case.

An excess of white smoke emitted from exhaust upon acceleration after a brief period of idle. It was determined that a faulty turbo charger was to blame. So the car was in the shop for 7 days while they replaced the turbo. Several months later the car wouldn't start after sitting in a heated garage overnight. It sounded as though the cylinders weren't firing properly. Car was towed to mechanic who identified issue as fouled cylinder heads from prior failure of turbo. This time the entire engine was replaced. Again the car was in the shop for approximately seven days. Some months later an oppressive amount of road noise appeared at all speeds on all road surfaces. We were directed that the tires were to blame. After replacing all 4 tires at a cost of nearly $800 the sound persisted. Upon further inspection the technician found that the wheel speed sensors on the rear wheels had failed allowing water to seep in and rust rear wheel bearings. All four wheel bearings where replaced. Today the vehicle is again in for engine repair to replace the oxygen sensor and a dead battery. After owning the car for 18 months it is has been in the shop for a total of approximately 4 weeks.

My wife was driving our 2007 Cx-7 with approximately 28k miles along a four lane major road when car lost power and became basically undriveable. Leaving her sitting on a extremely busy section of road with my 2 year old son in the back seat as people are flying off an entrance ramp from aberdeen proving ground. She fought it to the shoulder of us route 40 north of baltimore, leaving her in a very dangerous situation. Mazda dealership where vehicle was purchased was less than a half mile from failure location and after traffic had died down I was able to limp vehicle to dealer with wife following me at 10 mph. Turbocharger failure has been blamed, as usual Mazda has denied warranty work due to engine sludge, even though vehicle has been maintained. After thorough research for the last month, while my vehicle has sat at the dealership, via many websites edmunds forum, mycx7. Com, Mazdas247. Com etc. Mazda is claiming same engine sludge is cause of failure of numerous timing chains, turbos, vvt actuators etc. Even on vehicles that have been maintained by their dealerships. There has been a technical service bulletin released by Mazda (TSB# mtol - 5505) that stated the flawed design of their pcv system not allowing oil to drain properly from the turbocharger. No fix has been made available with recent information I have read in regards to the flawed pcv not circulating the oil. Hope someone can bring this flawed design engine to light before someone or a family is killed in a major accident where their car leaves them stranded in the middle of a highway like I-95. Thanks for the time in looking into this matter.

I bought the 2009 Mazda cx7 in March of 2009. About mid August to early September 2009 the car would begin to jolt backwards (when put in reverse) or forward (in drive) when I would be ready to leave. Soon after it would stall to go up hills or to pick up speed when getting on the interstate. Later I would fuel the car toa "full tank" and the gasoline would spill all back out. I called and filed a complaint @ 2 different times at which the dealership could not find anything. Later calling me back stating that the O2 was messed up and fixed about (early February 2010 is when it was in the shop). I was without a vehicle for 1 1/2 weeks. After being looked at & fixed, I later pumped gasoline and it repeated the same incident, spilling about a gallon of fuel! I called again and said it was bad fuel? now, in April 2010 with the weather being warm & when I turn on the vehicle the exhaust pipes begin to smoke and you can find gunk inside the exhaust pipes. I will be soon be calling gorman mccraken in longview, TX for them to look at the vehicle again as it is repeating every problem once again.

I recently had air compressor got acgo out on Mazda cx7 just out of warranty. Allegedly, Mazda is aware of problem with design and doing nothing.

At 45,000 miles my 2007 Mazda Cx-7 began blowing thick white smoke out from the exhaust and from under the hood. Took the car to dealer who said the turbo went out and was leaking oil into the exhaust system. They replaced the turbo and covered the part and charged me the $600 in labor to install it. Car is now at 57,000 miles and is showing the same symptoms when rpms go over 4000.

We purchased the vehicle new from a Mazda dealer. From the time we purchased the vehicle I have noticed excessive carbon buildup around the exhaust openings at the rear of the vehicle. It is progressively getting worse to the point where the catalytic converters are getting red hot. The chrome exhaust tips are now discolored due to the heat. This vehicle was checked several days after purchase, where according to the Mazda dealer, there were no issues. We moved, and a new Mazda dealer is servicing the vehicle. Today, 03-18-09 it was again checked diagnosticians with no issues. When this vehicle is driven for approximately 100 miles or more the exhaust system gets extremely hot. It is this "layman's opinion" that this engine is running very rich, "starving for air". I am concerned that this will eventually catch fire from the excessive heat generated at the catalytic converters and transmitted through the remainder of the exhaust system. (last trip back from phila area was 03-11-09. . . I was concerned about parking it in the garage until it cooled down).

My daughter has a Mazda 2007 Cx-7 and I have a 2008 Cx-7. The air conditioning in these cars, as witnessed by hundreds of complaints on line, is appalling. She had a pinhole in one of the hoses and it took 6 days to repair. . . For a hose?? additionally, her car has been back to the dealership 3 times for white smoke billowing out of the tailpipes. . . They have "no idea" what is causing it.

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!.