Subaru has sold its six millionth car in the U.S.

Forty-four years after launching in the United States with the humble 360, Subaru of America has sold its six millionth vehicle, an XV Crosstrek.

The milestone comes near the end of a record sales year for Subaru. The automaker's volume through October was up 26 percent to 271,582 vehicles - surpassing its previous annual sales record (set in 2011) with two months left in the year.

"Not only have we sold six million vehicles in the U.S., but we are selling them at a faster rate than ever," said Thomas J. Doll, executive vice president and COO of Subaru of America. "It took us 16 years to reach our first million, but at our current sales rate we will hit our next million in under three years."

With sales booming, Subaru is considering a major expansion of its U.S. output. Yasuyuki Yoshinaga, president of Fuji Heavy Industries (Subaru's parent company), stated in a recent interview with Kyodo News that Subaru may boost its U.S. production by 130,000 vehicles annually to 300,000 each year as soon as April 2016.

A final decision on the production increase will reportedly be made by the end of this year.