Navara injector

At 70,000 km, three months after the warranty expired, the injectors in my 2007 Nissan Navara D40 auto started making a loud "tinking" noise. I am a diesel mechanic and I diagnosed injector failure. The Nissan dealer was unable to diagnose the problem, but reluctantly chose to follow my diagnosis. Nissan agreed to meet 50 percent of the $3000 parts replacement cost. I did the repair, much to the chagrin of Nissan. The problem was rectified, but I have since heard of several other Navara D40s with the same problem at about the same kilometres. Now at 85,000 km the front disc brakes and rotors are worn out. I am not heavy on brakes. I sold a Toyota Landcruiser at 240,000 km, which I owned from new, with the original brakes and linings still operational. The Navara has all the power that is required, is enjoyable to drive, but it appears that the parts put in from new are substandard. Nissan's method of operation seems to be to fit cheap, inferior parts to get the price down. I doubt if I will ever buy another Nissan product.