Maruti Suzuki's Wagon R, launched in 1999, has become a top-selling car in India despite initial lukewarm reception due to its unconventional tall, boxy design. Initially outsold by competitors like the Hyundai Santro, the Wagon R's fortunes changed with a facelift and dual-fuel engine in 2004. It evolved into a 'big small car,' appreciated for its spacious interior and practicality, making it a perennial best-seller and crossing 3.5 million units produced.