Complex sentence: In 2003 Mazda released their first consumer offered Mazdaspeed vehicle which was the 2003 Mazdaspeed Protegé which was only released in the North American market.
Split into simpler sentences: In 2003 Mazda released their first consumer offered Mazdaspeed vehicle which was the 2003 Mazdaspeed Protegé. This vehicle was only released in the North American market.