The above is for USA/Can cars without superchargers.
The "average mileage at engine failure in production year" green line is pretty much as expected.
The "number of cars produced in year divided by the number of failures" purple line however is not. It should follow the green line to show that newer cars are less likely to fail but clearly doesn't.
Currently of the 47 entries:
22 are 2007/8/9/10 cars from a total production of 15203 cars @ an ave miles at failure of 61,500.
25 are 2011/12/13 cars from a total production of 15053 cars @ an ave miles at failure of 25,800.
The change in rod bearing spec occurred sometime around July/Aug 2010 (probably for the 2011 MY)