Japan Automobile Importers Association released the data of the imported car market share in Japan. According to the report, 278,864 cars were imported to Japan in 2013. Among them, Volkswagen had the highest market share (24.1%). Please see "What European/American Car is Popular in Japan?" also.
Here is the market share of imported cars in Japan, 2013.
|Manufacturer||Market share (%)|
|BMW (exclude MINI)||16.5|
The source of the market share is Nikkei Sangyo Shimbun newspaper, the article on 2014 July 28th.
Table : Top 10 Selling Newly Registered Foreign-brand Passenger Cars in 2013
|BMW 3 Series||18,739|
|Volkswagen The Beetle||10,004|
|Volvo 40 Series||9,246|
Source is Japan Automobile Importers Association.