Complex sentence: The Nissan Pulsar is an automobile that was produced by the Japanese automaker Nissan from 1978, when it debuted as a subcompact car, to 2007, when it was replaced in all markets by the Nissan Tiida.
Split into simpler sentences: The Nissan Pulsar is a subcompact automobile that was produced by the Japanese automaker Nissan from 1978 to 2007. The Pulsar was it was replaced in all markets by the Nissan Tiida.