2010 Mazda CX-7 Transmission and drivetrain Problems

“2010 cx7 grand touring was purchased with 5,844 miles from dealer. We changed the oil & filter every 6,000 miles using recommended oil as shown in the owners manual (5w20). Manual recommendation is to change oil every 7,500 miles with normal driving conditions which is the case as my wife drove to and from work. At 37,000 miles, vehicle was started in 20deg f. Temps, warmed up for and experienced loud engine knock. Once driven, vehicle had no power and had troubles getting to hwy speed. …”

“On october 4 2012 I was told by the Mazda dealer service dept that my timing chain and turbo charger on my 2010 Mazda cx7 went bad and needed to be replaced. My vehicle only has 39400 miles on it and should be covered under mazdas power train warranty. I was told by Mazda warranty department that they would not pay for anything based on sludge build up in the engine. I sent them copies of oil change maintenance as they requested which were done at aprox every 3400 miles as opposed to the required 7500miles. …”

“Was driving and all of a sudden lost power and a howling noise no check engine light came on. Pulled over to see what it was and nothing visible no leaks nothing. Had my wife hit the has and no noise. Stared driving and noise came back and white smoke. Just had an oil change done and next oil change due in about 1000 miles. Drove about 20 MPH to get home check oil and it was ok. The white smoke makes me think the turbo went on my car. I just purchased this car in october of 2015. It's been back to the shop for electric problems with the key and radio that still not resolved. …”

“Tcs and check engine light is on. The car does not have power even if the gas pedal is pressed all the way, the car moves only up to 5 miles per hour (RPM power). Vehicle loses throttle. Ac blows warm when tcs light is on. There is a white smoke from the exhaust.”

“Fluid has been leaking from the underside of the vehicle for approximately one year. After driving for even short distances the fluid seems to drop onto the exhaust pipe or some other hot metal and burns with an acrid smell and a minor amount of smoke. I have a concern that a fire may start from the burning fluid. Vehicle was brought into the dealer for a repair to the transfer case, which is leaking fluid, but it is past the warranty period and the cost will be over $1000. There is a TSB on this problem that is caused by a manufacturing defect of the transfer case seals.”