I was driving my Mazda CX-7 on the highway at 65 mph when my car made a loud noise from the engine and had a loss in power. I towed the car to a Mazda dealer where the technician that inspected my car stated the timing chain was missing a pin and caused the engine to break. Therefore my engine needed to be replaced. I replaced my engine at 72K miles which is slightly over the 70K mile service notice that Mazda recently put out for reimbursement from repairs related to the VVT Timing Chain. I hired a lawyer to pursue reimbursement of my engine replacement cost and would like to know if there are more cases of engine failure or repairs around/above 70K miles due to the timing chain.
We looked at the Infinite FX35 and were convinced this was our next vehicle. We saw a CX-7 on the road and within two weeks flew from Florida to New York to make the purchase. We got a great deal. The CX-7 is awesome and fun to drive. It has plenty of power and tons of cool features. The little things Mazda thought of to include are huge. A small blue light the illuminates the cup holder area at night with just enough light to hit the hole. The blue/orange back lighting and the upgraded headlamps with the GT Package are a must. The price was key. All the features of the FX35 without paying for the name.
1st turbo blown @ 43,000 miles driving down the road 30 miles an hr hear a load pop and whine and total loss of pwr. Seemed like i could only drive in 1st gear. Took to dealership and the following: 1. turbo charger replaced 2. Gasket, Turbo Charger 3. Gasket, oil pipe 4. Stud 5. Stud, Surge Tank x 8 6. Nut, Flange x 9 7. Sensor, air & Fuel 8. Pipe Fuel main 9. Valve, Selenoid Confirmed Customer concern, performed compression test and evaluated engine 175, 175, 180, 180. Engine appears not to be internally damaged, found turbo Impeller Rattling and sending engine oil into exhaust system, found no oxygen sensor signal. Replaced turbo and oil lines, replaced oxygen sensor. replaced fuel lines
Break pads wear quickly, gas mileage very very poor and requires premium gas, turbo system and transmission unreliable with high repair cost. Often need front alignment. Backup camera view screen are poor. Rear seats uncomfortable. Windows and doors noise.
Here is my advise to those who still own a 2007 CX7. 1. Pay the $600 (or so) and have a mechanic open engine to clean any sludge that may have accumulated over the years. Make sure they check over the timing chain and VVT actuator. 2. Don't follow Mazda's service plan, perform oil changes every 3000 miles. My Mazda dealer switched to 5w-20 (instead of 5w-30) because it is more durable with the turbo. You might want to do the same. I loved the performance of the car the short 2 years I had it. Build quality is ridiculously cheap! Parts are crazy expensive! I traded our CX7 in yesterday for our first Ford (always owned Mazda until now). I wish you all good luck with this car.