Vehicle started making a loud whining noise while driving at 55mph. White smoke started pouring out of rear end. We thought the car was on fire. It then wouldn't get over 20mph. Pulled over and called a tow truck.

- Daisetta, TX, USA

As I was driving my Mazda ( with a turbo engine) along the highway it began to decelerate on its own and making a loud knocking/grinding noise. It stopped on the road going up a hill with no turnouts. So it appears that the turbo blew up. It will start, but I cannot go anywhere. I have also had to replace gaskets on my oil filter housing unit, as the stock gaskets were faulty and causing a severe oil leak. Also, my emissions regulation ( egr) valve is bad and therefore will not pass smog. Each of these issues I am seeing more and more complaints about from other owners of the same vehicle. Mazda has made a horribly defective car and refuses to do anything about it except to claim owner negligence. I bought my car with 40K miles on it and it has been falling apart from the start. There is absolutely no excuse and this is not owner negligence, it is Mazda negligence and refusal to make anything right on their completely defective vehicles.

- Aguanga, CA, USA

The contact owns a 2008 Mazda Cx-7. the contact stated that while driving 20 mph, the vehicle made a popping sound and white smoke emitted from the rear of the vehicle. The contact mentioned that the vehicle stalled immediately after. The vehicle was taken to the dealer. The technician diagnosed that there was hole in the piston caused by the turbo charger. As a result, the engine needed to be replaced. The manufacturer was made aware of the failure. The vehicle was not repaired. The VIN was not available. The failure and current mileage was 78,000.

- Pensacola, FL, USA

The gasket on the oil coolers on these cars are defective. I have an oil leak from this gasket that puts me at risk for an engine blowout. I will have to replace the entire oil cooler at a cost of $500+ because the gasket can't be purchased separately. Mazda needs to take responsibility for this before people get stranded on the road. If you search this oil leak online, you find dozens of posts about this happening to other Cx-7 owners. This is a crossover SUV geared towards families. I drive my kids around in it and now am very concerned about the safety of this car.

- Miami, FL, USA

The contact owns a 2008 Mazda Cx-7. the contact stated that white smoke emitted from the tail pipe. The vehicle was taken to the dealer who stated that the failure was due to poor maintenance and that the turbo needed to be replaced. The contact also mentioned that the failure was previously experienced. The technician also stated that there was a blown head gasket. The vehicle was not repaired. The manufacturer was contacted about the failure. The failure mileage was approximately 81,000. Updated 12/31/13 the dealer informed the consumer the turbo failed due lack of maintenance and not enough oil changes.

- Livingston, NJ, USA

Sudden loss of power as the turbo stopped working. The Mazda dealership claimed that the turbo broke due to sludge in the engine. There was a lot of sludge in the engine, however, the car was well maintained with regular oil changes. It seems that the median engine temperature is hotter than is appropriate for the specified oil in the owners manual. This results in oil burning and sticking to the inside of the engine. Eventually a piece of "sludge" will come loose and clog the oil tube to the turbo, resulting in the turbo unit overheating and breaking. Mazda seems to be aware of this problem as they were pressured to extend the warranty on this part. However, the problem is very serious and there should be a recall of the turbo unit and clarification in the owner's manual. Mazda has yet to agree to fix the turbo and "sludge" in my engine. They are still insisting that I did not maintain the vehicle well. Fyi- I was a car designer with Honda/Acura for 4 years who designed the 2009 - 2012 MDX. I am stating this because I know SUV's and how to maintain them very well.

- Westwood, MA, USA

The contact owns a 2008 Mazda CX7. The contact stated that while the vehicle was parked and unoccupied, oil was leaking from the engine compartment. The vehicle was taken to an authorized dealer for diagnosis. The engine oil cooler and engine cover were both repaired. The manufacturer was notified of the problem. The failure mileage was unavailable....updated 04-22-14 the consumer stated the timing chain and vvt actuator was a recall item. The vehicle had not been repaired. Updated 04/28/2014

- Riverview , FL, USA

Mazda got stuck and had no power the first time second time happened October 9,2013 car kept shutting off and finally could not move. Turbo once again twice in 5 months and I only had this pre-owned vehicle for 7 months.

- Deer Park, NY, USA

The oil cooler above the filter is leaking very bad, and I need to replace the gasket, but I had no prior leaks before and it was hard to start my vehicle. You can't just buy the gasket for the cooler, unless it's the newer silver oil cooler, the part alone is at least $400, but there seems to a frequent issue of this with many others, on the 2008 Mazda Cx-7.

- Syracuse, NY, USA

Timing chain went out. Mazda is trying to say it sludge from poor maintenance. Even though we have all receipts since we owned it for oil changes. We just purchase this CX7 in August of 2012 with almost 28000 miles. Now a year later and 40000 miles it needs a motor.

- St Charles, IA, USA

The contact owns a 2008 Mazda Cx-7. the contact stated that while driving approximately 65 mph, the vehicle stalled without warning. The vehicle was towed to a dealer where it was diagnosed that the turbo charger and the engine needed to be replaced. The manufacturer was notified of the failure. The vehicle was not repaired. The approximate failure and current mileage was 100,262.

- Revere , MA, USA

There was a knocking almost as if the car was a diesel, brought the car to milford Mazda in milford ct after purchasing the vehicle a month earlier at bobs in milford ct. The Mazda dealer replaced the vvt December 2012 the service engine light goes on and I take it to the local garage and they get a code for camshaft, I bring the car to Mazda who tells me upon arrival with out even looking at the vehicle that I need a new engine and it wouldn't be covered under my extended warranty because they are sure there is sludge in the engine, yea same story everyone else gets. I faithfully had my oil changed every 5,0000 miles max as this was drilled in my head growing up from my dad. Approximately some time in March I was driving to work I get this loud whining sound coming from the engine and the car loses all power the turbo went. I have a new turbo installed and still supposedly need another vvt just 2 years after they replaced this part and now there is a humming/whining noise coming from the rear of the car not to mention (2) tie rods are bad. This car is no doubt a piece of crap that I still owe 13K on and Mazda corporate will not even return my call. There has to be something that can be done with all the same complaints.

- Trumbull, CT, USA

First the turbo went out and now the engine!!!

- Galloway, OH, USA

While traveling at 45mph, experienced sudden loss of power. Cel came on and trouble P3001 was the code display on handheld reader. Car is out of warranty, dealer states several components within engine have failed and Mazda has no responsibility over failures since I do not have an extended warranty. I have researched the problem production years 2007 and 2008 are plagued with premature engine failure.

- Oakland Gardens, NY, USA

Earlier that day I got my oil changed on my lunch break at work. I drive back to work my car sits in the parking lot and I leave a few hours later well my car it was making a really loud noise it sounded like a helicopter I live about 30 miles away so I figured if I drive slow enough I might be able to make it home. As I was going up a hill the car start to decelerate so im like ok maybe I need to go slower no I get up over the hill and am going down the hill and the car just dies there on the side of the road. I get it towed to Mazda the next day because I find out I have a powertrain warrenty until 60,000 miles I only have 54,000 miles on it so they tow it under my roadside assistance. Now my car has been there for a month and come to find out my timing chain went on it causing a domino effect on it and making the engine go. Now the dealership wants 8 grand to fix my car because Mazda denied my claim due to "engine sludge" which at this low of miles and me performing regular oil changes they considered "lack of maintance" because I couldnt prove it.

- Boonville , NY, USA

I purchased the 2008 Mazda CX7 about 2 weeks ago and already replaced the compressor I first had white smoke coming out the tail pipe well I didn't think anything of it until someone told me that is not normal so a week later I started hearing noises like a diesel truck and a knocking noise so the next day I went to the dealership that sold me the vehicle and we drove the vehicle and he stated it was fine he then drove again and the vehicle locked up and they told me the compressor locked up now I'm hearing a ticking noise from the engine and they stated it was normal but it still concerns me cause reading other statement have me worried that the engine valve will be next and I don't have money to repair a vehicle I'm a single parent of 4 kids.

- Montgomery, AL, USA

Check engine light came on took it to dealer...egr value needed to be replaced...warranty was expired. About $700 or part...wondering if there is recall on part. Reading forum and seems to be a problem with others.

- Ft Oglethorpe, GA, USA

The contact owns a 2008 Mazda Cx-7. the contact stated that while driving 25 mph, the vehicle stalled without warning. The contact pulled over and had the vehicle towed to a dealer. The dealer performed a diagnostic test which determined that oil sludge was in the turbo lines. The dealer advised the contact that the turbo malfunctioned and needed be replaced. The dealer did not state how the oil entered the turbo lines. No repairs were performed on the vehicle. The failure mileage was 54,445.

- Mukilteo, WA, USA

The vehicle is a 2008 Mazda Cx-7 bought as a pre-owned certified from Mazda dealer in ramsey, NJ. It had the engine light on and I took it immediately to the dealer near my work (colmar, pa) and it was diagnosed with code P0401, egr valve failure. With under 40K I was not expecting this to fail and the repair cost was $718. (diagnosis, parts and labor). I looked up online and saw that it is a frequent issue with people having much newer car than mine. Obviously it was not covered under warranty and I had to pay from my pocket. But I am disappointed with the repair as the next day the brake light came on. It comes on in the morning and stays on intermittently. It finally goes away after 15-20 minutes of driving. I plan to go to the dealer tomorrow to see if this is something that resulted during yesterday's repair.

- Blue Bell, PA, USA

Purchased vehicle used at 41,000 in Mar 2012. First issue: Egr valve had to be replaced at 44,000 miles in May 2012, not covered under warranty ("not a California emissions vehicle"). had 45,000 mile service performed. Dealership service tech also provided service history from previous owner and verified it was serviced regularly. Service tech confirmed this was a known issue with the vehicle, but it was not covered under warranty unless it was a ca emission vehicle. Also not covered under aul extended warranty purchased with vehicle. Cost: $750 to replace egr. Second issue: Dec 2012, 52,000 miles, driving for less than a mile in congested traffic at 15-20mph. Vehicle began spewing white smoke out of exhaust. Immediately pulled off road, called for tow truck. Waited 3 hours with two children under 8... vehicle was taken to same dealership for evaluation/repair. I asked them to evaluate turbo, based on white smoke and slow driving/idle, as consistent with other known issues. Was informed engine mount 3 filled with oil, which coated underside of vehicle, causing smoke. Engine mount failure covered under 60,000 mile factory warranty. Service technician indicated they haven't seen this issue before (however, I see it in several posts online). Service technician commented I was lucky that this did not result in a more catastrophic event (fire, total engine failure). He also commented there is "a lot of stress on mount #3" and it was hard to find the replacement part. He acknowledged turbo issues, but claims my turbo is okay (for now). Mazda needs to recall and fix these well known and documented engine issues (egr valve, engine mounts, turbo chargers, compressors) before there is further loss of vehicles/life. At a minimum, extend the warranty to cover beyond 60,000 miles when so many known issues exist. It will be cheaper than the class action lawsuit underway.

- Sherwood, OR, USA