Original sentence: In September 2015, German car maker Volkswagen AG was caught using software to cheat on emissions tests for 11 million of its diesel engine Volkswagen, Porsche- and Audi-branded cars sold between 2009 and 2015
Edited sentence: In September 2015, German car maker Volkswagen AG was caught using software to illegally cheat on emissions tests for 11 million of its diesel engine Volkswagen, Porsche- and Audi-branded cars sold between 2009 and 2015