The 3 has sold significantly more units than the 6, which adds to its overall percentage of reliable vehicles. Generally, people getting the 3 over the 6 are more timid drivers from my experience.
Not sure what you mean here. The 3 comes in the same exact trim levels and has the same features but at a lower cost. If anything, there are more Touring and GT 3s sold than Touring and GT 6s.Probably all the electronic garbage in the higher-trim models.