A heuristic does not need to be true 100% of the time to be useful. Subaru were well known for having timing belt issues that caused motor failure for much of t

A heuristic does not need to be true 100% of the time to be useful. Subaru were well known for having timing belt issues that caused motor failure for much of the 2000-2020 era, but were still popular. That doesn't tarnish the good names of the manufacturers that people actually think about when they think about Japanese quality.