Engine Oil Leaking problems of the 2007 Mazda CX-7

Mazda's l-series engines are earning a reputation for variable vale timing (vvt) defects that can cause oil leaks, excessive smoke out of the tailpipe, loose timing chains, and catastrophic engine failure. Mazda has acknowledged the vvt problems in a �special service program� but, according to owners, has denied warranty coverage in some cases. Because my vehicle is beyond the extended period Mazda does not feel they have any responsibility to compensate for this repair. It has been reported that this could cause the engine to stop while on the highway creating a dangerous or deadly condition.

I took the car in the have the ac compressor replaced a couple weeks ago. June 9 I lost all cold air and done acceleration. I thought the two were related but we're not. My car would sometimes drive as normal and other times unexpectedly slow down to 25 mph in a 60 mph zone and I couldn't speed up. I took it back to the mechanic. He said the turbo was going out. Then the catalytic converter. Then the gasket. It's had multiple oil leaks. This car is costing me more than its worth.

I have a 2007 Mazda cx7 I've seen alot of recalls but one complaint I am constantly seeing is the turbo failure and leaking an indecent amount of oil causing an enviormental hazard. I am in a situation now where my turbo is leaking alot of oil and alot of cx7 owner are getting good their turbos replaced more than three times. I very looked into tears problem and apparently Mazda has came up with a solution that has rerouted the air pressure to the turbo by supplying a venalation kit that costs $2,226 just for parts that's including the turbo and $826 for labor. . I feel that if they have identified the problem they should tell consumers about it if your driving on the freeway and all of a sudden the car looses power it could cause an accident. . . And I have also read that the turbo is a very poor design.

Complete engine failure at 75,287 miles. Entire engine is burned up, oil changed regularly, no oil leaks, turbo sensor replaced in April 2011 by dealer under extended warranty, engine not covered under warranty in December 2011, cited lack of maintenance even with receipts of oil changes. After researching issue, this is a common problem in Mazda cx7's, and engine failure has been reported in over 2000 cases. Not only is the condition dangerous, as the vehicle just stops running without appropriate warning lights, modern cars do not usually need a new engine at lower mileage. Mazda has sent no notices or letters stating this is a common problem on this model, and has not recommended using synthetic oil or more frequent oil changes.