So far, my math looks pretty good. At least one side of the equation was right.

I know for a fact that all the new impreza's are not burning oil, because many owners of the new impreza are not experiencing any problems, including many of the people who have been posting on this forum and asking questions about the problem.

I took the 15-20 estimate from your post at face value, but I would be surprised if there are that many even on this forum. Why don't you work on identifying the correct number of individuals here that think their cars are consuming oil, so we can have a better number to calculate from.

Because my next assumption would be to multiply that number by 10, then estimate a percentage. Even if there are 200 out of the approximately 66,000 on the road, that would not be a huge percent (0.30%, to be exact).

That does not mean no cars are burning oil, but it definately indicates all the new Impreza's are not burning oil. Mine for example.