The early war tanks and the Sturmgeschütze (tank hunters) never had these issues, they were a thing in late war where the new tank models came from drawing board to full production and Use within a year, and then there was the whole problem with recourses, iron and coal where not the problem, it was qualified humans and molybdenum that basically fucked the German tanks in later war.

Russias equipment is falling apart from day one.

Edit: fucking autocorrect!