As cars have gotten more & more complex, it's easy to question the auto industry for blame, but the true blame mostly falls on federal & state regulations. Emission, safety, or CAFE along with public demand have turned simple repairs in your backyard into something needing a rocket scientist. The auto industry is to blame for designs that require special [for most of us single use] tools. More & more simple things are being used trying to force owners back to dealers service centers only. One example I can think of on the C-Max, is the lack of an transmission dipstick forcing an older owner back to the dealer or finding a shop willing to check it for you.