Complex sentence: In the United States, VW withdrew its application for emissions certification for its 2016 diesel models, leaving thousands of vehicles stranded at ports in October 2015, which the company said contained software which should have been disclosed to and certified by the EPA.
Split into simpler sentences: In the United States, VW withdrew its application for emissions certification for its 2016 diesel models, leaving thousands of vehicles stranded at ports in October 2015. The company said the vehicles contained software that should have been disclosed to and certified by the EPA.