The Daihatsu Sonica is a compact kei car produced by Daihatsu, designed primarily for the Japanese market. Introduced in 2006, it was known for its efficient use of space, offering a unique combination of small exterior dimensions with a surprisingly roomy interior. Across its production years, the Sonica featured modest updates but maintained its core design as a stylish, practical urban vehicle with excellent fuel economy. While production ended after a few years, the Sonica remains notable among kei cars for its distinctive hatchback styling and functionality.