The Daihatsu Boon is a subcompact car

Subcompact car

Subcompact car is a North American term used to describe automobiles whose class size is smaller than that of a compact car, usually not exceeding in length, but larger than a microcar...

/supermini

Supermini

A superminicomputer, or supermini, is “a minicomputer with high performance compared to ordinary minicomputers.” The term was an invention used from the mid-1970s mainly to distinguish the emerging 32-bit minis from the classical 16-bit minicomputers...

 produced by Japan

Japan

Japan is an island nation in East Asia. Located in the Pacific Ocean, it lies to the east of the Sea of Japan, China, North Korea, South Korea and Russia, stretching from the Sea of Okhotsk in the north to the East China Sea and Taiwan in the south...

ese automaker Daihatsu since 2004, and also sold under Toyota Passo and Daihatsu Sirion

Outside of Japan, the first-generation Boon is sold as the second-generation Sirion, the first-generation Sirion was sold as the Daihatsu Storia

Daihatsu Storia

The Daihatsu Storia was a subcompact car/supermini produced by Japanese automaker Daihatsu between 1998 and 2004, and also sold as Toyota Duet...

 in Japan.
For Japanese Domestic Market, the car sold as Daihatsu Boon and Toyota Passo available with 1.0 L and 1.3 L engine.