If Subaru is Japanese and so is Toyota, Why do people buy Toyota than Subaru?

Because, generally-speaking, Toyota has been better run than Subaru over the past 50 years.

Subaru owners have often lamented the fact that Subaru marketing is not as good as it should be. That is a major issue as well.

most peolpe think toyota looks better.

personal preference. most subaru is are awd, which kinda hurts the fuel economy. both are very reliable. subaru is are a little more ''aggressive'' in appearance, whereas most common toyotas are more refined. and, as stated before, toyota has more history than subaru in the usa, so most people will go with what they know.

If Chrysler is American and so is Ford, why do people buy Ford than Chrysler?

People buy cars they like, not necessarily because of country of origin.

Because toyota has a wider variaty of vehicles such as trucks and suv's, both very good brands

The company is predisposition is rather domestic & they have not changed their company is name as western style.
Subaru is not company name. is just a brand. The name is Fuji Heavy Industries Ltd.
And their design is so called ''hicksville''. Actually some of models r old fashioned compared with Toyoya & Honda.
However, there r many enthusiasts of Subaru in Japan.

They r also manufacturing for Airbus A380 & Boeing.
http://en.wikipedia.org/wiki/Fuji_Heavy_Industries

choices are lesser. they are so many models on toyota than subaru that is y subaru loss in sales they only produce high rally car ,how many ppl would buy that ?especially familyman and oldman.

Its all about marketing. Now that Toyota owns part of Subaru that should change. Suabru marketing should improve. Subaru quality is great. Fuji heavy industries ownes the majority of subaru (japanese for come together) The range of models is not as plentiful as Toyota. Subaru is available only with AWD and they only have 5 models in comparison to toyotas 11.