This diagram is a timeline of the Suzuki Cultus, Ignis and Swift.
The period of confusion is 2000 to 2008 when the Ignis appeared and was sold as the Swift, in Japan, replacing the Cultus. Suzuki produced two generations of Ignis: 2000 to 2004 and 2003 to 2008. In Europe the Swift appeared in 1988, the same as the car known in Japan as the Cultus. I don’t think we got the first generation. In Europe the Ignis and Swift overlapped from 2004 to 2008.
The HT515 Ignis is thus an odd and uncertain bridge between the Cultus and Swift. As its personality emerged – a kind of mini-CUV – Suzuki decided to create another car more in line with what the Cultus had been, a supermini. For 2017 the Ignis nameplate makes a comeback, attached to a car that is small, and chunky but which inexplicably refers to the 1978 SC100 or Whizzkid.