Sorry, George, but its different in today's world! Complexity is rising faster than most car companies can improve, and it is a big problem.
If a mauafacturer with established statistical control(including design, manufacture and suppliers) has a given failure rate x, guess what happens when he adds more resistors, capacitors, IC's, processors, etc, each of which has the same historic failure rate?
Failure goes up...way up!
For example, suppose a manufacturer has a 1% average failure rate (99% good) on all components going on his circuit board, and he is using 50 such parts/circuit board, the probabilty of boards working at end of the line is 0.99 raised to the 50th power, or 60.5% work ok. If he increases the complexity to 300 components per board of the same quality, the 0.99 to the 300th power is 4.9 % work OK at final test! The impact is not linear. These same calculations can be applied to field failure rates as well.
And this problem is not new. I can recall that Motorola had to shut down its Illinois TV plant back in the late seventies for this problem. Quasar(Japanese) bought them out and finally got things under control.
The bottom line is that complexity is still a major problem as technology constantly advances...full stop (just as my car did!)