Complex sentence: The high-performance CLK 55 AMG, which was introduced first in Europe in 2000, was powered by the "M113" 5.4 L V8 engine; the CLK 55 AMG Cabriolet wa launched in 2002, the last year of this body style.
Split into simpler sentences: The high-performance CLK 55 AMG, which was introduced first in Europe in 2000, was powered by the "M113" 5.4 L V8 engine. The CLK 55 AMG cabriolet became available in 2002, the last year of this body style.