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

Egr valve failure on a 2008 Mazda Cx-7 with 47,500 miles. I had never heard of a egr valve before my check engine light came on and I took it to the local auto parts store to have them tell me the error code. Took it to the dealership and they told me that the warranty for the part was 60months/60,000 miles. While I was way under on the miles, I was 5 months over on the time. Since this was my 3rd trip into the dealership over the past 5 months dealing with problems/maintenance with my Cx-7, I asked why this particular part failed. I was told that it was due to the negative effects of ethanol. After some quick research, it is clear that 2007-2008 Mazda Cx-7 has serious problems with the egr valve. It will cost me $650 to fix. Mazda should have been forced to recall this part since it looks like it was defective from the start. Was told that a new replacement part for the egr valve would be put into the vehicle which will not break due to presence of ethanol in gas.

- Vero Beach, 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