6.0Ls Ford, head gasket, injectors (almost every truck we've had at the shop), egr and Turbo
7.3 injectors at 400k trannys around 250-300k
Duramax 01-03 injector problems, IIRC a class action lawsuit about injector/tranny issues (high temps while pulling up huge hills)
Dodge 24 valves and common rails: all autos are junk, engine is best out of all diesels, best fuel economy best torque, front ends with heavy use need rebuilt at 80-100k
All 08s and newer run like shit and get bad fuel economy with all the bullshit EPA restrictions.