Notes: The 2007 Mazda CX-7 has numerous reports filed with the NHTSA about engine & A/C problems.

Owners report problems with the 2007 CX-7's Variable Valve Timing (VVT) & timing chain failing, causing major damage to the engine — Mazda uses an interference design so typically the valves are bent & the entire engine needs to be replaced. Mazda dealers typically quote $9,000 for an engine replacement.

There is also a trend of the turbo failing at low mileage.

Finally for the 2007 CX-7 there is a clear pattern of A/C compressor failure at relatively low mileage. Owners report smoke & occasionally the serpentine belt catches fire when the A/C compressor clutch seizes while driving. Mazda extended the A/C warranty to 60,000 miles, however many owners report their A/C compressor failed very soon after the 60k mark.

In 2011, Mazda began a "Special Service Program" that extended the warranty to 7 years/70,000 miles covering turbocharger oil leaks & excessive timing chain noise — an early sign of timing chain failure. However coverage under the program requires perfect documentation of all required maintenance with other stipulations. Buyer beware.


really awful
Crashes / Fires:
1 / 6
Injuries / Deaths:
2 / 0
Average Mileage:
45,788 miles

About These NHTSA Complaints:

This data is from the NHTSA — the US gov't agency tasked with vehicle safety. Complaints are spread across multiple & redundant categories, & are not organized by problem.

So how do you find out what problems are occurring? For this NHTSA complaint data, the only way is to read through the comments below. Any duplicates or errors? It's not us.

2007 Mazda CX-7 cooling system problems

cooling system problem

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2007 Mazda CX-7 Owner Comments (Page 2 of 3)

« Read the previous 20 complaints

problem #39

Jun 072010


  • 45,773 miles


I have a 2007 Mazda CX7. A/C problems, I have talk to the dealer and searched the internet and have found many other people are having the same problems. Stop cooling, smoke coming from the vents and engine. Most only have 36,000- 50,000 miles. The cost of repairs are $1000+. the has had many cars come in with the same problem.

- St. Joseph, MO, USA

problem #38

May 272010


  • 29,500 miles
Driving my car (2007 Cx-7 with 29,500 miles on it - still "supposed" to be under warranty) as normal on a relatively hot and muggy day with A/C on (May 27, 2010). Rolled to a stop at a light at the bottom of an exit ramp, and the car shuttered and died. Popped into neutral, started up, put it in drive and it died again. I shut off the A/C and put the windows down to listen to the car, put it in neutral again and it started, put it in drive and it drove just fine. Engine temp was fine. I drove the car without A/C to get home safely. My husband and I switched cars (he has a Mazda 3, we are (were?) Mazda lovers). He drove it without A/C for the week, and on a limited basis until we could get it to a service appointment. Morning of June 3, car has smoke coming out of engine after driving 2-3 miles from home. Only the fan was running. There is an awful sound that comes on if the car runs with any of the air/circulation components. Engine temp is still in the normal range. It is currently at a dealership and we are waiting to hear back, but my suspicion is that it is the same problem with the A/C compressor/clutch/belt set up. Not good.

- Minneapolis, MN, USA

problem #37

May 302010


  • 39,000 miles
I bought my 2007 Mazda Cx-7 February 2007 with 19,000 miles. At the 20,000 mile mark I had to take the car in to get the transmission computer replaced, thankfully my car was still under warranty and that got taken care 35,000 miles I began having electrical issues, with the windows & doors, I eventually went outside of the Mazda corporation to fix the problem since my warranty had expired. I encountered the biggest problem of all on May 30, 2010 at 39,000 miles and a mere 16 months after having purchased the vehicle. While on a trip out of town with my family for memorial day weekend, the A/C suddenly went out and a strong burning smell began to fill the car.the smell was soo sudden and strong that my severe asthma almost immediately begin to act up. Fortunately, we were close to our destination and were able to stop within a few minutes. We figured we would let the car rest and didn't drive it for 24 hrs. The following day when we attempted to turn in on, it would not start and there was thick white smoke coming from the hood. We opened the hood and a giant cloud of smoke filled the air along with the reek of burning rubber. Being it was memorial day we struggled to find a mechanic shop that was open to assist us and to tow our car. Upon diagnosis it was established that the A/C compressor had died out having burned multiple components of my car, the final cost of these repairs is over $1600 including a $1200 compressor. I attempted to call Mazda corporate as well as the dealership where I purchased the vehicle and they seemed to wipe their hands clean off this incident even though upon research this seems to be a very common problem in this vehicle, one that upon discussing on forums they seem to be very aware of. I do not have $1600 at hand thus my vehicle remains out of town where it broke down. Mazda's nonchalant attitude is pushing me to file a class action lawsuit, they need to take responsibility for this defect & recall it this vehicle immediately!

- Houston, TX, USA

problem #36

May 052010


  • 43,000 miles


While driving my 2007 Mazda CX7 with circulating fan on suddenly heard a grinding noise and had a lot of white smoke coming from under right front hood. There weren't any warning lights on my dash & the temp gauge read normal. Car has 43,000 miles on it and was at dealer previous week for routine oil change. Local Mazda dealer advised A/C compressor, dryer, expansion valve, pag oil & freon are all needed for $1,400 and it would take a 1/2 day to repair once they had the parts. This is a known defect and Mazda should cover with a recall.

- Wyoming, DE, USA

problem #35

Apr 082010


  • 67,000 miles
Pulled into a gas station, once placed in park position, noticed white smoke coming from passengers front side. Opened the hood and smelled something burning. Drove home (5 mins) and left until I returned car to dealership. According to dealership, the air compressor locked up and the radiator cap was not working properly. The are replacing radiator cap and replacing air compressor with belt.

- Terrell, TX, USA

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problem #34

Apr 102010


  • 42,000 miles
I was driving down the road April 10, 2010, in my 2007 Mazda cx 7 when the A/C started blowing hot air, next thing I knew people are flagging me down and telling me my car is on fire! the car was not on fire, just very hot and smoking with a very bad burning smell. Dealership said A/C compressor locked up which caused other damage. Dealership said "they had no knowledge of problems with A/C compressor". low and behold numerous complaints online of people with the same issues, between 30 - 50K miles, some even losing power steering or complete operation of their vehicles due to A/C compressor failure. Mazda has not recalled? this is a problem and it may cost someone their life. Please investigate...

- San Diego, CA, USA

problem #33

Feb 102010


  • 35,400 miles


2007 Mazda Cx-7 - 39 months old with 35,000 miles, the air conditioning A/C compressor caught on fire, melted the compressor and made the car smoke, had to stop the car and wait to be towed back home. Seems to be a problem happening to a lot of other Cx-7 owners. Would like for Mazda to take care of this problem and pay for any parts and repairs on this matter.

- Pembroke Pines, FL, USA

problem #32

Nov 092009


  • 50,000 miles
A/C compressor locks. No power steering, overheats and dies suddenly.

- Panama City Beach, FL, USA

problem #31

Feb 132010


  • 40,000 miles
2007, Mazda Cx-7, 40,000 miles (4,000 out of warranty) the air compressor stopped working. Spewed only hot air. I had it at the dealer at 32,000 miles for a compressor/belt squeak. Dealer found "nothing unusual". four days now with out the car and they don't know what is wrong.

- Emerald Hills, CA, USA

problem #30

Feb 012010


  • 53,358 miles
No events or warning leading to failure. A/C compressor locked up at 53K mi. Just quit working, hot rubber smell coming from engine.

- Van Nuys, CA, USA

problem #29

Feb 032010


  • 49,000 miles


I just got a Mazda cx 7 4 months ago. The A/C system is fried. The factory warranty was no good and I have to pay$1900. Please I am read these articles and do not buy.

- Fort Hoof Texas, TX, USA

problem #28

Feb 012010


  • 35,202 miles
I own a 2007 Mazda CX7 that the A/C compressor seized up on causing a near fire under the hood. I heard an awful noise and saw smoke billowing under the hood. I shut it down immediately knowing that what was about to happen couldn't be good. I went online and found out this has happened to many cx7S now the dealer is telling me that because I've owned this for 37 months, (35,000 miles) that it isn't covered by the 60,000 mile drive train warranty, (if I can't drive it, its a drivetrain problem to me)...this needs to be a class action lawsuit..or a recall you're choice.

- Mt. Pleasant, SC, USA

problem #27

Jan 062010


  • 39,603 miles
Ac compressor locked up causing car to stall in middle of street and smoke coming from under hood.

- Brea, CA, USA

problem #26

Dec 272009


  • 39,300 miles
2007 Mazda Cx-7 - A/C compressor went out on way home from fl to atl. White smoke from right side engine bay. Was able to turn off A/C in time to keep vehicle running. Seems this is a known issue with Mazda. $900 to replace parts and labor. Mazda of roswell states issue was unknown to them. Mazda usa is aware as well as all the forums and this site as well from other customers. Many customers have had this happen multiple times. Some within the 36K btb warranty, some after. Powertrain is up to 60K. With this being a known issue, shouldn't this be a recall if it is a problem that will occur on most 2007 Cx-7's with the part? I have emailed Mazda usa as well.

- Alpharetta, GA, USA

problem #25

Dec 132009


  • 56,000 miles
I have a Mazda Cx-7 2007. In the last 6 months I had to replace ac condenser twice. It locked up and started smoking. And the car was undriveable. Now they have 300 back orders for this part before I can fix my car.

- Thibodaux, LA, USA

problem #24

Oct 252009


  • 37,400 miles
My 2007 Mazda CX7 A/C compressor froze up at 37500 miles. The engine started to smoke wile driving the vehicle causing me to suddenly stop and evacuate the vehicle. I thought the vehicle was on fire. Mazda is well aware of this issue. At first they attempted to charge me 1000 for the repair. After repeated discussions with the dealer and Mazda usa the vehicle was fixed at no charge. This issue is very serious and there needs to be a recall before someone gets hurt.

- Tarpon Springs, FL, USA

problem #23

Sep 082009


  • 49,000 miles
1. no events involved. 2. failure: Premature air conditioning compressor failure. Failure causes overheating of component with smoking from under hood along with strange noises. 3. compressor unit had to be replaced by a dealership at a cost of over $1,000.

- Carmel, IN, USA

problem #22

Sep 282009


  • 41,600 miles
Ac blowing warm air and loud noise from under the hood, sounded like I was driving a diesel. Took car to shop to determine what was causing the noise. Ac compressor going out car only has 41,600 miles on it. Ac compressor has to be replaced or risk more damage to motor. Warranty expired at 36,000 miles. Company first told me I had the extended warranty then later called and stated I did not have extended warranty and job would cost $1,100. Told them I would come and get car not able to pay $1,100 for repair. Called me back later and stated that they would cover 60% if I would pay 40%.

- Highlandville, MO, USA

problem #21

Sep 092009


  • 71,000 miles
I was stranded an hour away from home B/C my Mazda Cx-7 wouldn't start. I had to have it towed back to the dealership an hour away. The problem was that the ac compressor broke and that cause the drive belt to break which in turn caused a motor mount to blow out and all that drained my battery such that I had to replace it as well. This happened less than a week ago and I'm already hearing of others who have also had problems with their ac in the same type car.

- Maumelle, AR, USA

problem #20

Sep 132009


  • 44,000 miles
Air conditioner stopped blowing cool air. Was on a three hour trip and stopped at a 4 way. The Mazda Cx-7 engine died and would not start. I had to be pushed to the side of a busy intersection. The dealership said it was the A/C compressor. The compressor went out and caused the belt to slip, not allowing the alternator to do its job.

- Wheatland, MO, USA

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