One problem related to service engine light on has been reported for the 2008 Mazda CX-7. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2008 Mazda CX-7 based on all problems reported for the 2008 CX-7.
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.